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SERVICE MANUAL Outdoor unit - Mitsubishi Electric Cooling

Contents

1. LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply Indoor Outdoor gt PFC Converter 519 Switch MC Motor for Compressor IPM Power Module LED1 LED2 LED lt Operation Inspection Indicators gt MF1 Fan Motor CB1 CB3 Main Smoothing Capacitor F1 F4 Fuse lt T6 3AL250V gt 2184 Solenoid Valve Four Way Valve N F Noise Filter Circuit Board SWP Switch lt Pump Down 63H High Pressure Switch LI LO Connection Terminal lt L1 Phase gt CN31 Connector Emergency Operation TH3 Thermistor Outdoor Pipe NI NO Connection Terminal lt L2 Phase gt SS Connector
2. SZ E 51646 SEI m 176 029 A 8 6 A SIE MONO did B PL NA SES Hosch 9e S e 88 5 ap lt gus oeees zenes e gay p p Mon ere SS e SE aloy crt Spl Shh 002 A 3 1 amp E N BER a 8 lt 9 6 1 gt 0 D AR qe D LES 6g A in Kal e ES n FX a Ge 55 v i inoyoouy Se NU ER gt ejou 100 4 S n S Seu Budd wae jinpuo GENEE 9We P0v rene 003 KEE EH noyoouy lt 9 F WU aloy Buyunn 190000 ajo ioco Bud eed x yoga jo epis 9104 buda bu Su O 18S 19409 yuos4 lt 9 gt M iinpuoo eu eu 9 1noxoouy Dudu SES a EE PES Bld DARN P o ls QA n 96 3 AA SS P EN 3 xx VIS JI UULU U E sl NANI a S v ZS Vv amp EN IPUEH AAR V a L3 a UUU ZF i Jeued adas 10101016 U j OX av eps Buum joopinoncopur uf 9 8 uogeoo JATYA dOLS 19 Aiddns 1 eure up tt ZZE 8ipueH seu iv 1995 lt 8 gt ZS 6 34 v 14 u
3. 0 Switch OFF 1 Switch ON 0 Switch OFF 1 Switch ON DEL ER Data display 1 25 1 Data display 00 00 00 00 11 00 01 1 1 00 01 0 00 02 1 00 02 1 00 03 1 1 00 03 0 00 04 00 04 1 00 05 1 00 05 1 00 06 0 1 1 0 00 06 1 1 1 0 0 0 00 07 1 1 1 0 00 07 00 08 1 1 00 08 1 1 00 09 1 1 00 09 1 00 1 00 1 1 00 Ob 1 1 0 1 00 Ob 00 0 0 0 1 1 00 0 1 1 00 Od 1lo 1 1 00 Od 1 1 1 00 OE 0 1 1 1 00 OE 1 00 TEMENE 00 OF 1 00 10 1 1 00 11 ERE RET 00 42 0 Switch OFF 1 Switch ON 1 1 0 o 1 0 00 13 SW8 Data display 1 00 14 11213 1 o 1 o0 1 0 00 15 ojojo 00 00 1 00 16 11010 00 01 111 1 00 17 1110 00 02 00 18 11110 00 03 1 1 1 00 19 0 1 00 04 00 1 110 1 00 05 111 1 00 1B 0 1 1 00 06 0olo 1 1 11 0 00 1C 1 1 1 00 07 1 1 1 00 1
4. CND WHT 3 1 666 59 6S ILII 9 Tel 7 WHT 1 4 1221 1 6 1 5 MS mg TH3 THA LEV A CNVMNT CNMNT 5 ER m MERETADAFTER S RED WHTJWHT WHT WHT WHT 9mm Blom SE as SE ES 2 CNF2 5 8 po 9 5 2 7 WHT 13 13 7 1 CNM 14 285 63L 63 WHT Z ouwen RED YLW CN52C RED 3 d 12 Slop 4 WHT St 5 i 2 2 TRANS A ik 5 rs ZZ lo CNDC 2 2 2 5 2r 7 o 8 F2 CNAC e E 5 CNS D X x WHT t 6 Fi F4 S 112154 ss 3 9 GRN WHT 12154 X2 PUZ only 4 gt TABT BLU TABS wHT __ leen DR M M aig ug tel EE 1 Lea He S ASIA 1 CNS 2 2 RED Seel 2 WHT WHT RED WHT TABN2 The black square m indicates a switch position MODEL SW6 SW5 5 6 2 PUZ A42N
5. W Remote controller button information MITSUBISHI ELECTRIC Si II SE 0 ON OFF C 2 Operation mode Compressor information Outdoor unit information Indoor unit information Confirm TRGO OMENU ON OFF 1 IN FILTER C aum 3864 TEST gt e e PAR 21MAA CLEAR Activate cancel maintenance mode 1 Press the TEST button for 3 seconds to switch to maintenance mode Display maintenance If stable operation is unnecessary or if you want to check the data with the air conditioner stopped skip to step 4 Fixed Hz operation The operating frequency can be fixed to stabilize operation of inverter model If the air conditioner is currently stopped start it by this operation 2 Press the MODE button to select the desired operation mode Stable cooling Stable heating Stable operation Display operation gt operation gt cancellation COOL HEAT STABLE MODE STABLE MODE STABLE MODE CANCEL 3 Press the FILTER button to check the setting Display Waiting for stabilization 0 gt ooo gt Stabilized aaa After 10 to 20 minutes 85 Data measurement When the operation is stabilized measure operation data as explained below 4 Press the TEMP buttons CA to select the desired refrigerant address nn Lu lt gt Screen 5 Select the type of data to be displayed After selecti
6. S B dome Mo m lt 9L S L gt EE S CRED CL SEES gt GUE TOE npo Ja INA A a i 2 91072569 ejou Buidid ee G ES S S SE lt 8 9 2 gt 26 B souls E B EE Ze c 6l 2 vL gt elo d Gei 5 CES Ne 1 jou juo14 n 8 Tapis Ze Tia N m N TUR 6 inoxoouy Soe woyog a104 uruna 1294 gt 9 Ss EE BUS CCFC pa 5 E T 3 Zt ont aer s 7 916 1 oy 5104 Buun UO inoyoouy 0 uero Buun e lt 91 gt 22 2 joy Jeued uoee epis noxoouy 9 L L 429 z 9104 Burdid d 0 EE au jee 2 ynpuoco eu jnoyoouy Bud v SES D 2 in sea rk SUE E gt 23 99900 ne ES 5 56 NES z SIE Sal SEIT Ip HE Vis U EX Xen av S o V NANA N 2s 3 NE cH s fs q A 8 UUU IPUEH q 8 5 a AP ane Ze L M jus des Ran uogeoo uopoeuuoo FATWA 4015 JO uogeoipu lt 8 gt 29 6 9 1 edid GINO 21 EN UUUU U lt 8 6 gt 88 6 34
7. Setting number Refrigerant address Unit number Mode number EA MITSUBISH ELECTRIC D E J eg Ze e E ee C Cd Cs uz Sea C Modes 01 to 14 can be activated a GJ by pressing buttons and VOMA JA simultaneously and modes 1510 28 by pressing buttons and Q S YER C D Selecting functions using the wired remote controller D Check the function selection setting Switch to function setting mode X For modes 15 and higher Press and at the same time press and at the same time with stop the remote controller 9 Specify refrigerant address 00 outdoor unit Specify unit No 00 indoor unit Use and Enter the setting Specified indoor unit Press FAN operation Change refrigerant address or unit No amp Select mode No 02 room temperature detection position Select setting No 03 remote controller fixed Use and Example Selecting room temperature detection position Enter the setting Press End function display x Press and at the same time The above procedure must be carried out only if changes are necessary 90 Operating Procedure Check the setting items provided by function selection If settings for a mode are changed by function selection the functions of that mode will be changed acco
8. PUZ A42NHA4 BS Service port Low pressure protect check S High tect switch Ball valve 4 way igh pressure protect switc valve iu heat exchanger ED N Thermistor Refrigerant GAS pipe d rainer z CS TH6 15 88mm d5 8 NM B c Service NI Thermistor pot al ___ Muffler QW check m H Strainer i LIOS Thermistor 100 TH4 Distributor Accumulator Refrigerant flow in cooling Compressor ESSE gt Refrigerant flow in heating Refrigerant LIQUID pipe 5 9 52 3 8 TOL Strainer Strainer 100 100 Stop valve Linear expansion valve with service port 25 PUY A12NHA4 BS PUY A18NHA4 BS Unit mm inch Service port Stop valve High pressure Check with service port protect switch Outdoor heat exchanger 50 Sirahe Thermistor Refrigerant GAS D gt TH6 12 7mm 1 2 o Thermistor d TH3 Thermistor the TH32 1 Distributor Accumulator Refrigerant flow in cooling Compressor 100 100 Refrigerant LIQUID pipe Strainer lt gt Strainer 6 35mm 1 4 ke SS F X Stop valve Linear expansion valve PUY A24NHA4 BS PUY A30NHA4 BS PUY A36NHA4 BS Service Ball valve Bypass valve port Outdoor heat exchanger check Thermistor Refrigerant GAS pipe TH6 15 88mn d5 8
9. Indoor pipe temperature Cond Eva 38 190 39 88 C TH5 2 When the temperature is O F or less and Indoor 2 temperature are displayed by turns 88 190 Indoor room temperature TH1 46 102 8 39 46 102 79 SW2 setting Display detail The black square indicates a switch position Explanation for display ON Indoor setting temperature 62 86 62 86 17 30 C Outdoor pipe temperature 2 phase pipe TH6 38 190 38 190 39 88 C When the temperature is 0 F or less and temperature are displayed by turns Outdoor outside temperature TH7 38 190 38 190 39 88 When the temperature is O F or less and temperature are displayed by turns Outdoor heatsink temperature TH8 40 327 40 327 40 164 When the temperature is O F or less and temperature are displayed by turns When the thermistor detects 100 F or more hundreds digit tens digit and ones digit are displayed by turns Discharge superheat SHd 0 327 Cooling TH4 or TH32 TH6 Heating TH4 or TH32 TH5 0 327 0 182degC When the temperature is 100degF or more hun dreds digit tens digit and ones digit are displayed by turns Sub cool SC 0 234 Cooling TH6 TH3 Heating TH5 TH2 0 234 0 130degC When the tem
10. 1 0 5 128 Dimensions of flare cutting and flare nut The component molecules in HFC refrigerant are smaller compared to conventional refrigerants In addition to that R410A is a refrigerant which has higher risk of leakage because of its working pressure is higher than that of other refrigerants Therefore to enhance air tightness and intensity flare cutting dimension of copper pipe for RA10A has been specified separately from the dimensions for other refrigerants as shown below The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below Set copper pipe correctly referring to cop per pipe flaring dimensions for R410A below For 1 2 and 5 8 inch the dimension B changes Use torque wrench corresponding to each dimension Dimension B Flare cutting dimensions Unit mm inch Flare nut dimensions Unit mm inch Nominal Outside Dimension A 34 Nominal Outside Dimension B dimensions inch diameter R410A R22 dimensions inch diameter R410A 1 4 6 35 9 1 11 32 23 64 9 0 1 4 6 35 17 0 43 64 3 8 9 52 13 2 1 2 33 64 13 0 3 8 9 52 22 0 7 8 1 2 12 70 16 6 41 64 21 32 16 2 1 2 12 70 26 0 1 3 64 5 8 15 88 19 7 49 64 25 32 19 4 5 8 15 88 29 0 1 9 64 3 4 19 05 23 3 3 4 19 05 9 Tools for R410A The following table shows whether conventional tools can be used or not Tools and materials R410A tools Can R22 tools be used Gauge ma
11. H 78 Minute The black square indicates a switch position SW2 setting Display detail Explanation for display The number of connected indoor units 0 3 The number of connected indoor units are dis played Capacity setting display Displayed as an outdoor capacity code Capacity Code Capacity Code A12N 9 A30N display A18N 10 A36N A24N 11 A42N Outdoor unit setting information The tens digit Total display for applied setting Setting details Display details H P Cooling only 0 HP 1 Cooling only Single phase 3 phase O Single phase 2 3 phase Code The ones digit display Setting details Display details Defrosting switch JO Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 is displayed Indoor pipe temperature Liquid TH2 1 38 190 39 88 C Indoor 1 When the temperature is O F or less and 38 190 temperature are displayed by turns Indoor pipe temperature Cond Eva 38 190 39 88 C TH5 1 When the temperature is O F or less and Indoor 1 temperature are displayed by turns 88 190 Indoor pipe temperature Liquid TH2 2 38 190 39 88 Indoor 2 When the temperature is O F or less and 38 190 temperature are displayed by turns
12. qm SEG TRANS 12 1 V 2 T CNDC 2 se le PNK SS F2 m T d DUE d 12 o Ao oN 21543 13 T sva 3 ss 4 GRN 5 3l giu 5 5 102154 PUZ only 6 RED RED RED WHT WHT WHT ACE M NET ADAPTER je MC e i SYMBOL NAME P 1 2 TB7 Terminal Block lt M net connection gt 5 CN5 Connector lt Transmission gt CND Connector lt Power Supply gt Za CN2M Connector lt M NET communication gt AH SWI Switch lt Status of communication gt IPM SW11 Switch Address setting 1s digit G r CM 115 2 E SW12 Switch lt Address setting 10s digit WHT 2 le LED1 LED lt Power Supply DC5V gt TABU een LED2 LED Connection to Outdoor Unit RED TAB i CN3 1 E LED3 LED Transmission Sending ABS WHT TAB LS rd FEN LED4 LED lt Transmission Receiving gt d TH8 59 LED5 LED lt Power Supply DC12V gt Be o 2 7 58 e WHT ed CB2 718907 22 1 777 1 MODEL SELECT S The black square m indicates a switch position SE MODEL Sue SW5 56 x2 EE ON ON PUZ A18NHM OFF MI BR EE an or ew 1234567 8 123456 PUY A12NHA4 a E um OF 5678 12345 8 zi LI El NI sah c D o SR EM E PUY A18NHA4 on OF 1234567 8 123456 1 2 SW5 1 to 4 Function switch 8 a amp ei L1 L2 GR 51 52 S3 TB1 INDOOR UH UNIT POWER SUPPLY 208 230 60Hz Use copper
13. 1 If the beeper does not sound again after the initial 2 beeps to confirm the self check start signal was received and the OPERATION INDICATOR lamp does not come on there are no error records 2 If the beeper sounds times continuously beep beep beep 0 4 0 4 0 4 sec after the initial 2 beeps to confirm the self check start signal was received the specified refrigerant address is incorrect 34 10 4 SELF DIAGNOSIS ACTION TABLE lt Abnormalities detected when the power is turned on gt Note 1 Refer to indoor unit section for code P and code E Error Code Abnormal point and detection method Case Judgment and action No voltage is supplied to terminal block TB1 of outdoor unit a Power supply breaker is turned off b Contact failure or disconnec tion of power supply terminal c Open phase L1 or L2 phase Electric power is not charged to power supply terminal of out door power circuit board a Contact failure of power supply terminal b Open phase on the outdoor power circuit board A12 A24N Disconnection of connector R or S A30 A42N Disconnection of connector TABT or TABS G Electric power is not supplied to outdoor controller circuit board 8 Disconnection of connector CNDC Disconnection of reactor DCL or ACL Disconnection of outdoor noise filter circuit board or parts fail ure in outdoor noise filter circuit board As for A30 A42N type it is especially
14. 116 OPERATING PROCEDURE PHOTOS 4 Removing the thermistor lt Outdoor 2 phase pipe gt TH6 Photo 4 Theristor 1 Remove the service panel See Figure 1 Electrical Outdoor 2 phase pipe 2 Remove the top panel See Figure 1 Controller parts box TH6 3 Disconnect the connectors TH6 and TH7 red on the circuit board controller circuit board in the electrical parts box C B 4 Loosen the clamp for the lead wire in the rear of the electrical parts box 5 Pull out the thermistor Outdoor 2 phase pipe TH6 from the sensor holder Note In case of replacing thermistor Outdoor 2 phase pipe TH6 replace it together with thermistor Outdoor TH7 since they are combined together Refer to No 5 below to remove thermistor Outdoor 5 Removing the thermistor lt Outdoor gt TH7 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the connector TH7 red on the controller circuit board in the electrical parts box 4 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 4 5 Pull out the thermistor lt Outdoor gt TH7 from the sensor holder Note In case of replacing thermistor Outdoor replace it together with thermistor lt Outdoor 2 phase pipe gt TH6 since they are combined together Refer to No 4 above to remove thermistor lt Outdoor 2 phase pipe gt Photo 5
15. Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving circuit of indoor unit or remote controller 5 If displayed address or attribute is FRESH MASTER Indoor unit detects abnormality when indoor unit transmitted to FRESH MASTER and there was no reply ACK During sequential operation of indoor unit and FRESH MASTER of other refrigerant System if indoor unit transmits to FRESH MASTER while outdoor unit power supply of same refrigerant system with FRESH MASTER is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of indoor unit or FRESH MASTER Disconnection of transmission connector CN2M of indoor unit or FRESH MASTER Defective transmitting receiving circuit of indoor unit or FRESH MASTER 6 If displayed address or attribute is LOSSNAY Indoor unit detects abnormality when indoor unit transmitted to LOSSNAY and there was no reply ACK If the power supply of LOSSNAY is turned off indoor unit detects abnormality when it transmits to LOSSNAY During sequential operation of indoor unit and LOSSNAY of other refrigerant system if indoor unit transmits to LOSSNAY while outdoor unit power supply of same refrig erant system with LOSSNAY is turned off or within 2 min utes of restart abnormality is detected 9 Contact failure of transmis sion wire of indoor unit of LOSSNAY Disconnec
16. 6 6 Freezing Overheating protection operation unit refer to 7 EE Communication error between indoor and outdoor units indoor units 8 P8 Pipe temperature error service manual 9 E4 E5 Remote controller signal receiving error 10 11 12 Fb Indoor unit control system error memory error etc EO E3 Remote controller transmission error E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code Symptom Remark Number of times Indoor outdoor unit communication error 1 E9 Transmitting error Outdoor unit 2 UP Compressor overcurrent interruption 3 03 04 Open short of outdoor unit thermistors 4 UF Compressor overcurrent interruption When compressor locked 5 U2 Abnormal high discharging temperature insufficient refrigerant e For details check 6 U1 Ud Abnormal high pressure 63H operated Overheating the LED display protection operation of the outdoor 7 U5 Abnormal temperature of heatsink controller board 8 U8 Outdoor unit fan protection stop 9 U6 Compressor overcurrent interruption Abnormal of power module U9 UH Abnormality such as overvoltage or voltage shortage and d abnormal synchronous signal to main circuit Current sensor error 12 13 x 14 Others Other errors
17. 99 9 Description 8 Request content Unit Remarks 2 Display range 153 Indoor Fan operating time 154 ap 0 9999 1 hour After filter is reset Indoor Total operating time 155 0 9999 10 hours Fan motor ON time 156 157 Indoor fan output value Sj value 0 255 Fan control data For indoor fan phase control Indoor fan output value v an Er d 158 00 indicates fan control data For indoor fan pulsation control Pulsation ON OFF 159 Indoor fan output value duty value 00 indicates fan control data For indoor DC brushless motor control 160 161 162 Indoor unit Model setting information Referto 13 2 1 Detail Contents in Request Code 163 Indoor unit Capacity setting information Referto 13 2 1 Detail Contents in Request Code 164 Indoor unit SW3 information Undefined 165 Wireless pair No indoor control board side setting Referto 13 2 1 Detail Contents in Request Code 166 Indoor unit SW5 information Undefined 167 189 190 Indoor unit Microprocessor version information Examples Ver 5 01 0501 Ver 191 Indoor unit Microprocessor version information sub No Auxiliary information displayed after version information _ Examples Ver 5 01 A000 000 192 764 765 Stable operation Heat mode This request code is not provided to collect data I
18. The black square m indicates a switch position PUYANHM ON OO NI OO o oE om G DN o 2 Power failure automatic recovery can be set by either remote controller this DIP SW If one of them is to ON Auto recovery activates Please set Auto recovery basically by remote controller because not all units have DIP SW Please refer to the indoor unit installation manual x3 SWT 1 2 are used for demand control SW7 1 2 are effective only at the demand control Refer to next page Special function b x4 Please do not use SW7 3 6 usually Trouble might be caused by the usage condition 2 Function of connector Action by open short operation HP Types Connector Function Effective timing Short Open Connector CN31 Emergency operation Start Normal When power supply ON 72 Special function a Low level sound priority mode Local wiring Unit enters into Low level sound priority mode by external signal input setting Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual Adding a commercial timer or on off switch contactor setting to the CNDM connector which is optional contactor for demand input located on the outdoor controller board enables to control compressor operation frequency X The performance depends on the load of conditioned outdoor temperature
19. and temperature are displayed by turns Example When 15 F 0 5 secs 0 55 5 2 secs gt 15 gt t Compressor shell temperature TH32 or discharge temperature TH4 on error occurring 37 327 37 327 3 164 C When the temperature is 100 F or more the hundreds digit tens digit and ones digit are displayed by turns Example When 130 F 0 5 secs 0 5 2 secs 1 gt 30 H Compressor operating current on error occurring 0 50 Error code history 1 latest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns Code display Error code history 2 Alternate display of error unit number and code When no error history 0 and are displayed by turns Code display Thermostat ON time 0 999 0 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example When 245 minutes 0 5 secs 0 55 5 2 secs 2 245 gt Minute Test run elapsed time 0 120 0 120 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example When 105 minutes 0 5secs 0 5 2 secs 1 gt 05
20. 0403 error will appear on the central control remote controller X Bad example Multi spot grounding of shield wire Central remote controller Power supply appliance M NET type outdoor unit M NET type outdoor Unit M NET type outdoor uni N M NET transmission wire T OGood example 1 Single spot grounding of shield wire Central remote controller Power supply appliance M NET type outdoor Ge M NET type outdoor Gei M NET type outdoor unit NN M NET transmission wire O Good example 2 Single spot grounding of shield wire Central remote controller Power supply appliance M NET type outdoor dni M NET type outdoor da M NET type outdoor it ET NN M NET transmission wire If there are more than 2 grounding spots on the shield wire noise may enter into the shield wire because the ground wire and shield wire form one circuit and the electric potential difference occurs due to the impedance difference among ground ing spots In case of single spot grounding noise does not enter into the shield wire because the ground wire and shield wire do not form one circuit To avoid communication errors caused by noise make sure to observe the single spot grounding method described in the installation manual 23 M NET wiring
21. 3 0 3 0 3 0 4 5 2 14 16 3 12 16 6 10 16 6 10 16 6 10 16 10 Control Linear expansion valve Oil Charged Ether FV50S 0 87 0 87 28 28 Refrigerant piping Pipe size OD Liquid 9 52 9 52 3 8 3 8 Pipe size OD Gas 15 88 15 88 in 5 8 5 8 Connection method Indoor Connection method Outdoor Height difference IU OU m Piping length ft m ft 5 DATA 5 1 REFILLING REFRIGERANT CHARGE R410A oz kg Piping Length one way 100ft 110ft 120ft 30m Factory Charged PUY A12NHA4 PUY A12NHA4 BS PUZ A18NHA4 PUZ A18NHA4 BS PUY A18NHA4 PUY A18NHA4 BS PUZ A24NHA4 PUZ A24NHA4 BS PUY A24NHA4 PUY A24NHA4 BS PUZ A30NHA4 PUZ A30NHA4 BS PUY A30NHA4 PUY A30NHA4 BS PUZ A36NHA4 PUZ A36NHA4 BS PUY A36NHA4 PUY A36NHA4 BS PUZ A42NHA4 PUZ A42NHA4 BS PUY A42NHA4 PUY A42NHA4 BS 5 2 COMPRESSOR TECHNICAL DATA Service Ref PUZ A18NHA4 PUZ A18NHA4 BS PUY A12 18NHA4 PUY A12 18NHA4 BS PUZ A24 30 36NHA4 PUZ A24 30 36NHA4 BS PUY A24 30 36NHA4 PUY A24 30 36NHA4 BS Longer pipe than 70 or 100 ft additional charge is required at 20 C 68 F PUZ A42NHA4 PUZ A42NHA4 BS PUY A42NHA4 PUY A42NHA4 BS Compressor model SNB130FQCM1 TNB220FLHM ANV33
22. Connect to the terminal block TB1 El Connect to the earth E3 Connect to the earth CNAC1 CNAC2 208 230V AC Connect to the outdoor control ler circuit board CNAC 3 Primary current Connect to the z outdoor power circuit board CN5 LO NO Voltage of 208 230V AC is output Connect to the ACL CN52C 52C relay signal Connect to the outdoor controller circuit board CN52C 65 Outdoor noise filter circuit board PUZ A24NHA4 PUZ A24NHA4 BS PUY A24NHA4 PUY A24NHA4 BS El E2 Connect to the earth CNAC1 CNAC2 208 230V AC Connect to the outdoor control ler circuit board CNAC CN5 Primary current Connect to the outdoor power circuit board 5 CN52C ea 52C relay signal Connect to the outdoor controller circuit board CN52C LO NO Voltage of 208 230V AC is output Connect ACL 66 Outdoor noise filter circuit board PUZ A30 36 42NHA4 PUZ A30 36 42NHA4 BS PUY A30 36 42NHA4 PUY A30 36 42NHA4 BS CN52C 52C driving signal Connect to the outdoor controller circuit board CN52C RS1 LO NO Voltage of 208 230V AC is output Connect to the outdoor power circuit board TABS TABT CNAC1 CNAC2 208 230V AC Connect to the outdoor control ler circuit board CNAC Boca to the earth CN5 Primary current Connect to the outdoor power Connect to circuit board CN5 the earth Voltage of 208 230V
23. Inspection method and Diagnosis flow troubleshooting Check the display time of PLEASE WAIT after turning on the main power 6 minutes 2 minutes or more ow long is PLEASE WAIT or less kept being displayed on the emote controller PLEASE WAIT Normal will be displayed The start up diagnosis will during the start up be over in around 2 minutes 2106 diagnosis after turning minutes on the main power re any error codes displayed on the emote controller Check the LED display of the outdoor controller circuit board Are any error codes YES displayed on the LED e Miswiring of indoor e Refer to Self diagnosis outdoor connecting action table in order to wire solve the trouble NO Breaking of indoor outdoor connecting In case of communication wire S3 errors the display of Defective indoor remote controller may not controller board match the LED display of Defective outdoor the outdoor unit controller circuit board Defective indoor controller board Defective remote controller LED display of the indoor controller board LED oc LED2 6 LED3 6 Symptoms Nothing is displayed on the remote controller Di is fl Inspection method and tagnosis NOW troubleshooting Check the voltage between S1 and S2 on the terminal block TB4 of the indoor unit NO AC 187V to AC 253V Check the vo
24. 9 8kQ 57 50 40 30 c p 9 20 10 20 10 0 10 20 30 40 50 C 4 14 32 50 68 86 104122 F Temperature 200 150 L o c D 100 o ka 50 25 50 75 100 110 125 C 77 122 167 212 230 257 F Temperature 500 400 Q 300 8 5 2 8 200 100 25 50 75 100 120 C 77 122 167 212 248 F Temperature Linear expansion valve A12 18 1 Operation summary of the linear expansion valve Linear expansion valve opens closes through stepping motor after receiving the pulse signal from the outdoor controller board Valve position can be changed in proportion to the number of pulse signal Connection between the outdoor controller board and the linear expansion valve Outdoor controller board 2 Linear expansion valve operation Valve position capacity Pulse number Extra tightening about 32 pulse 500 pulse Opening a valve Il the way Opening avalve 8 gt 7 gt 6 gt 5 gt 4 gt 3 gt 2 gt 1 gt 8 Closing valve 1222 3 gt 4905 gt 56 gt 57 gt 8 gt 1 The output pulse shifts in above order When linear expansion valve operation stops all output phases become OFF When the switch is turned on 700 pulse closing valve signal will be sent till it goes to amp p
25. c Capacity 12 000 18 000 24 000 30 000 34 200 42 000 Input Indoor unit model 1 190 PKA A12HA4 2 240 PKA A18HA4 2 270 PKA A24KA4 4 130 PKA A30KA4 5 030 PKA A36KA4 4 600 PLA A42BA4 Phase Single Single Single Single Single Single Cycle 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz Voltage 230V 230V 230V 230V 230V 230V Current 0 33A 0 33A 0 36A 0 36A 0 57A 1 00A Outdoor unit model PUY A12NHA4 PUY A18NHA4 PUY A24NHA4 PUY A30NHA4 PUY A36NHA4 PUY A42NHA4 Phase Single Single Single Single Single Single Cycle 60Hz 60Hz 60Hz 60Hz 60Hz 60Hz Voltage 230V 230V 230V 230V 230V 230V Current Discharge pressure 5 3A 9 8A 9 4A 18 1A 21 7A 20 4A Suction pressure Discharge temperature Condensing temperature Suction temperature Ref Pipe length Discharge pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Ref Pipe length Intake air temperature DB Intake air temperature WB Discharge air temperature DB Intake air temperature DB Intake air temperature WB Intake air temperature DB Intake air temperature WB Discharge air temperature DB Intake air temperature DB Intake air
26. nected to terminal block for transmission wire of outdoor unit Check if terminal block for transmission wire TB3 and terminal block for central control TB7 are not connected Check transmission waveform or noise on transmission wire Error Code Abnormal point and detection method Case Judgment and action Communication error with communica tion processor Defective communication between unit processor and transmission processor Note The address and attribute display at remote controller indicate the con troller that detected abnormality Data of transmission proces Sor or unit processor is not transmitted normally because of accidental trouble such as noise or lightning surge Address forwarding from unit processor is not transmitted normally because of defective transmission processor hard ware Turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again System returns to normal if abnormality was accidental malfunc tion If the same abnormality generates again abnormality generated controller may be defec tive NO ACK signal 1 Transmitting side controller detects abnormal if a massage was transmitted but there is no reply ACK that a mes sage was received Transmitting side detects abnormality every 30 seconds 6 times continuously Note The address and attribute displayed
27. troller board x1 Error code displayed on remote controller X2 Refer to service manual for indoor unit Replace remote controller 79 lt Outdoor unit operation monitor function gt When option part A Control Service Tool PAC SK52ST is connected to outdoor controller board CNM Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on A Control Service Tool Operation indicator SW2 Indicator change of self diagnosis The black square indicates a switch position SW2 setting Display detail Explanation for display ON 123456 Digital indicator LED1 working details Be sure that 1 to 6 in the SW2 are set to OFF 1 Display when the power supply ON 1 second When the power supply ON blinking displays by turns interval Wait for 4 minutes at the longest e 2 When the display lights Normal operation Operation mode display Lighting LED1 66 mmm Initial setting The tens digit Operation mode gt The ones digit Relay output Display Operation Model Warming up Compressor OFF FAN COOLING DRY HEATING DEFROSTING Display Compressor 4 way Solenoid valve ON ON GDisplay during error postponement Postponement code is displayed when compressor stops d
28. uab sjlejap Je norued jo uoneue dx3 ejduiexe 21804 E smoys mojag eu SNOILOSYIG SNIHIM ONIdld 7 51108 39vdS 30859 C yun 39vdS 3384 14 mm lt inch gt Uni PUZ A42NHA4 BS PUY A42NHA4 BS PUZ A42NHA4 PUY A42NHA4 lt 8 EM gt 0LW uonepuno4 aloy peuojou pedeus N Z exelu JE pue Jeel y eq ueo suonoeuuoo pue Ajjeoo eq snw sJeusew pue sog syoq lt 8 EM gt OLW uonepunoj t UM Alum JUN eui enoes esee d Y uwous SS929P 10 papasu eoeds jo suolsuewiq
29. 0 Ok x Frequency control state Frequency control state CD Frequency control state D Display Current limit control 0 No current limit 1 Primary current limit control is ON 2 Secondary current limit control is ON Display FN currenty Compressor Four way valve Solenoid valve supplied to compressor 0 2 1 2 3 ON ON 4 ON 5 ON ON 6 ON ON 7 ON ON ON 8 ON A ON ON Display State 0 Normal 1 Preparing for heat operation 2 3 4 Heater is ON 5 Anti freeze protection is ON 6 Overheat protection is ON 7 Requesting compressor to turn OFF F There are no corresponding units Frequency control state 2 Display Discharge temperature Condensation temperature Anti freeze Heatsink temperature overheat prevention overheat prevention protection control overheat prevention 0 1 Controlled 2 Controlled 3 Controlled Controlled 4 Controlled 5 Controlled Controlled 6 Controlled Controlled 7 Controlled Controlled Controlled 8 Controlled 9 Controlled Controlled A Controlled Controlled b Controlled Controlled Controlled C Controlled Controlled d Controlled Controlled Controlled E Controlled Controlled Controlled F Controlled Controlled Controlled Controlled 101 Fan control state Request code 53 Data display g o x sk step correction value by heatsink temperatu
30. 4400 Outdoor fan motor Abnormal if the rotational frequency of fan motor is not detected during DC fan motor operation Fan motor rotational frequency is abnormal if 100 rpm or below detected continuously for 15 seconds at 20 C 68 F or more outside air temperature 50 rpm or below or 1500 rpm or more detected continuously for 1 minute KD Failure in the operation of the DC fan motor Failure in the outdoor circuit controller board 38 D Check or replace the DC fan motor Check the voltage of the outdoor circuit controller board during operation 8 Replace the outdoor circuit controller board when the failure is still indicated even after performing the action above Error Code Abnormal point and detection method Case Judgment and action Outdoor fan motor Abnormal if the rotational frequency of fan motor is not detected during DC fan motor operation Fan motor rotational frequency is abnor mal if 100 rpm or below detected continuously for 15 seconds at 20 C 68 F or more outside air temperature 50 rpm or below or 1500 rpm or more detected continuously for 1 minute Failure in the operation of the DC fan motor Failure in the outdoor circuit controller board Check or replace the DC fan motor Check the voltage of the outdoor circuit con troller board during operation G Replace the outdoor circuit controller board when the failure
31. Connection for Option TH6 Thermistor Outdoor 2 Phase Pipe ELE2 E3 Connection Terminal lt Ground gt CNM Connector lt A Control Service Inspection Kit TH7 Thermistor lt Outdoor gt 52C 52C Relay CNMNT Connector TH8 Thermistor lt Heatsink gt Controller Circuit Board lt Connected to Optional M NET Adapter Board gt TH32 Thermistor lt Shell gt SWI Switch lt Forced Defrost Defect History CNVMNT Connector LEV A Electronic Expansion Valve Record Reset Refrigerant Address gt lt Connected to Optional M NET Adapter Board gt ACL Reactor SW4 Switch lt Test Operation gt CNDM Connector Connected for Option Contact Input gt CY1 CY2 Capacitor SW5 Switch lt Function Switch gt CN51 Connector lt Connected for Option Signal output gt P B Power Circuit Board SW6 Switch lt Model Select gt X91 X52 X55 Relay TABR S Connection Terminal lt L1 L2 Phase gt SW7 Switch lt Function Setup gt TABU V W Connection Terminal lt U V W Phase gt Swe Switch lt Function Setup gt When M NET adapter is connected 63H LEVA TH32 TH7 TH3 s 5 4 Guo t tj t a evs swi2 i ss CNET die i i1 rrj weg eg S da el evs 7 1 6 MSY 4 TH LEV A BER SESS BLK RED WHT WHT WHT WHT ems Em 1252 c ai Si CND Zeen ees gos T ma gt 3 DHE 8888 ch 63H WHT PS eres YLW KN GE CN2
32. Disconnect the connector TH3 white or TH6 7 red on the controller circuit board in the electrical parts box 7 Loosen the clamp for the lead wire in the rear of the electrical parts box 8 Pull out the thermistor Outdoor pipe TH3 and thermistor Outdoor 2 phase pipe TH6 from the sensor holder and the thermistor Outdoor TH7 together since they are combined Refer to No 5 to remove the thermistor Outdoor TH7 Photo 6 Thermistor Electrical Outdoor 2 phase pipe parts box TH6 Thermistor Outdoor pipe TH3 107 OPERATING PROCEDURE PHOTOS 5 Removing the thermistor lt Outdoor gt TH7 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 red on the controller circuit board in the electrical parts box 4 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 4 5 Pull out the thermistor lt Outdoor gt TH7 from the sensor holder Note In case of replacing thermistor lt Outdoor gt TH7 replace it together with thermistor lt Outdoor 2 phase pipe gt TH6 since they are combined together Refer to No 4 to remove thermistor lt Outdoor 2 phase pipe gt Photo 7 Thermistor lt Outdoor gt Electrical parts box Sensor holder Removing the thermistor lt Shell gt TH32 1 Remove the service panel See Photo 1 2 Remove the top pan
33. ES ES o 12 T fol AT 1 7 12 Z CNDC SHIT 2 2 8 PNK Bz e Ua t t Oz 6 PUZ only TABT BLU CN52C nj gt TABP1 RED 1 CN4 2 WHT amp LA gt e OTABN 218 lz 2 KO V E E 3 LE 1 MODEL SELECT The black square m indicates a switch position ELAR MODEL SW6 SW5 56 2 x I a 2 2 cec 1 ON ON a D D PUZ A30NHAG o ia P bel a P oe si A 8 al I 2 EV amp 5 12345678 123456 RED O Pr Eo RED L1 L2 S1 sa 5 J TB1 PUZ A36NHA4 d m 3 T 1 8 123456 lo iv dr EET ACTM OEC ON MB ON YN et INDOOR PUY A30NHA OFF WI Hor UNIT 123 8
34. How to wire lt Low level sound priority mode circuit Insulate this point securely as Adaptor for external this is not used signal input Outdeor unit Purchased locally PAC SC36NA controller board ia Soe CN Ia 1 po C 1 Relay gt supply CNDM SWI Switch Fe PERE TENER df X Relay Contact spec DC1mA Max 10 m 33ft including local wiring 1 Make the circuit as shown above with Adaptor for external signal input PAC SC36NA 2 Turn SW1 to on for Low level sound priority mode Turn SW1 to off to release Low level sound priority mode and normal operation b Demand control Local wiring Demand control is available by external input In this mode power consumption is decreased within the range of usual 0 100906 How to wire Basically the wiring is the same as a Connect an SW1 which is procured at field to the between Orange and Red 1 and 3 of the Adaptor for external signal input PAC SC36NA and insulate the tip of the brown lead wire It is possible to set it to the following power consumption compared with ratings by setting the SW7 1 2 SW7 1 SW7 2 Powe sansumption OFF OFF 0 Operation stop ON OFF 50 OFF ON 75 73 lt Display function of inspection for outdoor unit gt The blinking patterns of both LED1 green and LED2 red indicate the types of abnormality when it occurs Types of abnormality ca
35. Indoor outdoor unit communication error signal receiving error is detected by in door unit Check if indoor outdoor connecting wire is connected correctly GQCheck if noise entered into indoor outdoor connecting wire or Indoor outdoor unit communication error transmitting error is detected by indoor unit power supply Check if noise entered into indoor outdoor controller board Indoor outdoor unit communication error signal receiving error is detected by outdoor unit Re check error by turning off power and on again Indoor outdoor unit communication error transmitting error is detected by outdoor unit 3 blinking Remote controller signal receiving error is detected by remote controller Check if connecting wire of indoor unit or remote controller is connected correctly Remote controller transmitting error is detected by remote controller GCheck if noise entered into transmission wire of remote controller Remote controller signal receiving error is detected by indoor unit GRe check error by turning off power and on again Remote controller transmitting error is detected by indoor unit 4 blinking Error code is not defined Check if remote controller is MA remote controller PAR 21MAA Check if noise entered into transmission wire of remote controller Check if noise entered into indoor outdoor connecting wire Re check error by turning off power and on aga
36. Remove the electrical parts box See Photo 5 7 Remove the 4 way valve coil See Photo 8 8 Recover refrigerant 9 Remove the welded part of four way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the four way valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized 9 Removing linear expansion valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the conduit cover and cord cover See Photo 2 5 Remove the back panel See Photo 1 6 Remove the electrical parts box See Photo 5 7 Remove the linear expansion valve coil See Photo 10 8 Recover refrigerant Photo 10 4 way valve coil fixing screw 4 way valve Linear expansion valve 4 way valve coil 9 Remove the welded part of linear expansion valve 2154 Linear expansion Note 1 Recover refrigerant without spreading it in the air valve coil LEV A Note 2 The welded part can be removed easily by remov ing the back panel Note 3 When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized 10 Removing the high pressure swi
37. SNB130FQCM1 TNB220FLHM TNB220FLHM TNB220FLHM ANV33FDPMT Motor output 0 9 0 9 1 3 R L A 12 12 12 L R A 14 14 14 Starter type Inverter Fan drive x No Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 2 Fan motor output 0 040 0 040 0 075 0 075 0 075 0 086 0 086 Fan motor 0 35 0 35 0 75 0 75 0 75 0 40 0 40 Airflow 34 34 55 55 55 100 1200 1200 1940 1940 1940 3530 Sound level Cooling 46 48 48 48 48 51 Heating Protection devices HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch LP switch Discharge thermo Dimension 800 800 950 950 950 950 300 23 300 23 330 30 330 30 330 30 330 30 600 600 943 943 943 1350 31 1 2 31 1 2 37 12 32 37 12 32 37 12 32 37 12 32 11 13 16 7 8 11 13 16 7 8 13 1 3 16 13 1 3 16 13 1 3 16 13 1 3 16 H H 23 5 8 23 5 8 37 1 8 37 1 8 37 1 8 53 5 32 Weight 37 40 74 74 74 117 82 89 163 163 163 258 Refrigerant Charged 1 3 1 7
38. be available when error codes other than the above are indicated For emergency operation it is necessary to set the emergency operation switch SWE on indoor controller board Refer to the electrical wiring diagram of indoor unit for how to set the indoor unit During emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the indoor unit Do not perform emergency cooling operation for more than 10 hours Neglecting this could result in freezing the heat exchanger in indoor unit 3 Emergency operation procedure the main power supply off Turn on the emergency operation switch SWE on indoor controller board Set the shorting pins of emergency operation connector CN31 on outdoor controller board to ON Use SWA 2 on outdoor controller board to set the operation mode cooling or heating SW4 1 is not used SWA CN31 Shorting pins ON Heating ON E O 1 2 Cooling OFF Turning the main power supply on will start the emergency operation 4 Releasing emergency operation Turn the main power supply off SWA Set the emergency operation switch SWE on indoor controller
39. conditioner If there are any obstacles in the air intake or air outlet of indoor outdoor units they block the airflow direction so that the unit capacity will be lowered Sound comes out from the air conditioner gas escaping sound is heard sometimes This is not a malfunction This is the sound which is heard when the flow of refrigerant in the air conditioner is switched A cracking sound is heard sometimes This is not a malfunction This is the sound which is heard when internal parts of units expand or contract when the temperature changes A buzzing sound is heard sometimes This is not a malfunction This is the sound which is heard when the outdoor unit starts operating A ticking sound is heard from the outdoor unit sometimes This is not a malfunction This is the sound which is heard when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition A sound similar to water flowing is heard from the unit This is not a malfunction This is the sound which is heard when the refrigerant is flowing inside the indoor unit Something is wrong with the blower The fan speed does not match the setting of the remote controller during DRY operation No air comes out sometimes during DRY operation This is not a malfunction During the DRY operation the blower s ON OFF is controlled by the micr
40. operation for 2 minutes at most after the power supply ON Hand held remote controller operation is prohibited Remote controlling adaptor is connected to CN32 on the indoor controller board Hand held remote controller operation is prohibited by centralised controller etc since it is connected to MELANS GRefer to factor of phenomena No 2 on previous page Normal operation Normal operation GCheck the details of phenomena No 2 on previous page Remote controller display works normally and the unit performs cool ing operation however the capacity cannot be fully obtained The air does not cool well Refrigerant shortage Filter clogging Heat exchanger clogging Air duct short cycle If refrigerant leaks discharging tempera ture rises and LEV opening increases Inspect leakage by checking the tempera ture and opening Check pipe connections for gas leakage Open intake grille and check the filter Clean the filter by removing dirt or dust on it If the filter is clogged indoor pipe tem perature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pres sure Clean the heat exchanger Remove the shield 7 Remote controller display works normally and the unit performs heat ing operation however the capacity cannot be fully obtained Linear expansion valve fault Opening cannot be adjusted well due to linear expan sion
41. or poor connection of or breaking of wire indoor outdoor connecting wire NO Defective indoor Replace the indoor power board power board 48 Symptoms Nothing is displayed on the remote controller Diagnosis flow LED display of the indoor controller board LED1 e LED2 LED3 or e Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block TB4 of the indoor unit NO AC 187V to AC 253V Check the status Not lighting of the indoor controller board LED3 display Check the looseness or disconnection of the indoor outdoor connecting wire Blinking Are there looseness or disconnection of the indoor outdoor connecting wire Check the refrigerant address of the outdoor unit SW1 3 to 1 6 Is the refrigeran address 0 YES Check the LED display of the outdoor unit after turning on the main power again Not displayed Is anything displayed Displayed Is EA or Eb NO displayed Is E8 displayed NO Can the unit be restarted an all the indoor unit be operated Check the voltage between S2 and S3 on the terminal block of the outdoor unit NO DC 17V to DC 28V YES 49 Breaking or poor contact of the indoor outdoor connecting wire Normal Only the unit which ha
42. then braze the pipes so that the inside of pipes are not oxidized Photo 7 Linear expansion valve coil LEV A 4 way valve coil fixing screw 4 way 4 W8y Linear expansion valve coil valve 118 OPERATING PROCEDURE PHOTOS 10 Removing the high pressure switch 63H and low pressure switch 63L 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Pull out the lead wire of high pressure switch and low pressure switch 5 Recover refrigerant 6 Remove the welded part of high pressure switch and low pressure switch Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the high pressure switch cover it with a wet cloth to prevent it from heating 210 F or more then braze the pipes so that the inside of pipes are not oxidized Photo 8 High pressure switch 63H Low pressure switch 63L 11 Removing the reactor DCL and capacitor CE 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 lt Removing the reactor gt 4 Remove 4 reactor fixing screws 4 x 10 and remove the reactor lt Removing the capacitor gt 4 Remo
43. 0 0 0 Setting content Data display Outdoor unit Capacity setting display Request code 70 00 0 Input state Setting content Setting Display Setting value SW7A SW72 0 0 1 50 ON 2 75 ON 3 100 ON ON Input state Input present Contact demand Silent mode Spare 1 Spare 2 Display input 0 1 e 2 e 3 e e 4 e 5 e e 6 e e 7 e e e 8 e 9 e e A e e b e e e C e e d e e e E e e e F e e e e Data display Capacity 9 12 10 18 11 24 14 30 20 36 25 42 Outdoor unit Setting information Request code 71 Data display 0 0 Setting information Defrost mode Standard K z A Display Setting information 0 Setting information 1 For high humidity Displa Single Heat pump pay 3 phase cooling only Single phase pump Cooling only 3 phase Meat pump Cooling only 103 Outdoor unit switch setting display SW1 to SW10 except SW3 Request codes 73 to 82
44. 0 94A Outdoor unit model PUZ A18NHA4 PUZ A24NHA4 PUZ A30NHA4 PUZ A36NHA4 PUZ A42NHA4 Electrical circuit Phase Single Single Single Single Single Cycle 60Hz 60Hz 60Hz 60Hz 60Hz Voltage 230V 230V 230V 230V 230V Current 9 8A 9 4A 18 1A 21 7A 20 4A Discharge pressure 3 01 2 78 3 08 3 23 2 83 Suction pressure 0 77 0 92 0 77 0 74 0 82 Discharge temperature 80 1 73 9 81 2 88 1 73 4 Condensing temperature 49 9 46 9 50 8 52 8 47 5 Suction temperature 3 8 12 1 a 3 3 2 3 d 4 9 Ref Pipe length 7 6 7 6 i 7 6 7 6 7 6 Discharge pressure 437 403 447 468 410 Suction pressure 112 117 107 120 Discharge temperature 176 178 191 164 Condensing temperature 122 123 127 118 o E o c S ic o o o c Suction temperature 39 38 36 40 Ref Pipe length 25 25 25 25 Intake air temperature DB Intake air temperature WB Discharge air temperature DB ntake air temperature DB ntake air temperature WB ntake air temperature DB ntake air temperature WB Discharge air temperature DB ntake air temperature DB ntake air temperature WB 11 5 4 2 Cooling only Representative matching PKA A12HA4 COOLING PKA A18HA4 COOLING PKA A24KA4 COOLING PKA A30KA4 COOLING PKA A36KA4 COOLING PLA A42BA4 COOLING Electrical circuit gt E o fe c S o 2
45. 1 Function of switches The black square indicates a switch position Action by the switch operation ON OFF Function Effective timing Wh i ti Forced defrost 1 Start Normal in heating Operation ne Abnormal history clear Clear Normal Off or operating Refrigerant address When power supply ON setting Test run Operating A 2 Under suspension Test run mode setting Heating Cooling No function No function Separate indoor outdoor unit power supplies Not used When power supply ON Pump down Normal Under suspension 1 Forced defrost should be done as follows Change the DIP SW1 1 the outdoor controller board from OFF to ON Forced defrost will start by the above operation 1 if all these conditions written below are satisfied Heat mode setting 10 minutes have passed since compressor started operating or previous forced defrost finished Pipe temperature is less than or equal to 8 C 46 F Forced defrost will finish if certain conditions are satisfied Forced defrost can be done if above conditions are satisfied when DIP SW1 1 is changed from OFF to ON After DIP SW1 1 is changed from OFF to ON there is no problem if DIP SW1 1 is left ON or changed to OFF again This depends on the service conditions 71
46. 1 Use 2 core x 1 25mm AWG16 shield wire for electric wires Excluding the case connecting to system controller 2 Connect the wire to the M NET terminal block Connect one core of the transmission wire non polar to A terminal and the other to B Peel the shield wire twist the shield part to a string and connect it to S terminal 3 In the system which several outdoor units are being connected the terminal A B S on M NET terminal block should be individually wired to the other M NET terminal block EEE Ground Gig e s Bl e Y Transmission Shield wire part outdoor unit s terminal i e A to A B to B and S to S In this case choose one of those outdoor units and drive a screw to fix an ground wire on the plate as shown on the right figure 8 4 1 M NET address setting In A control models M NET address and refrigerant address should be set only for the outdoor unit Similar to CITY MULTI series there is no need to set the address of outdoor unit and remote controller To construct a central control system the setting of M NET address should be conducted only upon the outdoor unit The setting range should be 1 to 50 the same as that of the indoor unit in CITY MULTI system and the Address number can be set by using rotary switches SW11 for ones digit and SW12 for tens digit which is located on the M NET board of outdoor unit Initial setting all addres
47. 190 39 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 F 0 5 secs 0 5 secs 2 secs gt 15 o Indoor pipe temperature Cond Eva TH5 on error occurring 38 190 38 190 39 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 F 0 5 secs 0 5 secs 2 secs 15 gt Outdoor pipe temperature 2 phase TH6 on error occurring 38 190 38 190 39 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 0 5 secs 0 5 secs 2 secs gt 15 gt k Outdoor outside temperature TH7 on error occurring 38 190 38 190 39 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 F 0 5 secs 0 5 secs 2 secs gt 15 gt Outdoor heatsink temperature TH8 error occurring 40 327 40 327 40 164 C When the temperature is O F or less and temperature are displayed by turns When the temperature is 100 F or more hundreds digit tens digit and ones digit are displayed by turns 82 The black square indicates a switc
48. 30 36N 81 C 177 F The outdoor fan motor is locked Failure of outdoor fan motor G Air flow path is clogged Rise of ambient temperature amp Defective thermistor Defective input circuit of outdoor power circuit board Failure of outdoor fan drive circuit ME Check outdoor fan Check airflow path for cooling Check if there is something which causes temperature rise around outdoor unit Upper limit of ambient temperature is 46 C 114 Turn off power and on again to check if U5 is displayed within 30 minutes If U4 is displayed instead of U5 follow the action to be taken for U4 Check resistance value of thermistor TH8 or temperature by microprocessor Thermistor TH8 Refer to 10 6 SW2 on A Control Service Tool Refer to 10 10 Replace outdoor power circuit board Replace outdoor controller circuit board Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition Outdoor stop valve is closed Q Decrease of power supply voltage 9 Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power circuit board Open stop valve Check facility of power supply G Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Check compressor referring to 10 6 Replace outdoor power circuit board U8
49. Be careful of the smudge on ceiling Function Filter sign Mode No Settings RF thermistor 100h 2500h No filter sign indicator Wired remote controller Upward position than the standard Setting Initial setting No Factory setting Upward position than the standard Setting No Mode No Wired remote controller RF thermistor 10 110 External static pressure Initial setting Factory setting 5Pa 0 02in WG External static pressure 5 15 35 50Pa 0 02 0 06 0 14 0 20in WG 15Pa 0 06in WG Refer to the right table Refer to the right table Set temperature in heating mode 4 deg up Available Not available Fan speed during the heating thermo OFF Extra low Stop Set fan speed Fan speed during the cooling thermo OFF Detection of abnormality of the pipe temperature P8 Set fan speed Stop Available Not available 35Pa 0 14in WG 50Pa 0 20in WG 3 1 12 1 1 Selecting functions using the wired remote controller First try to familiarize yourself with the flow of the function selection procedure In this section an example of setting the room temperature detection position is given For actual operations refer to steps to
50. Check the status _Lighting of the LED2 Blinking Defective remote controller Breaking or poor contact of the remote controller wire The remote controller wire short circuits Defective indoor controller board Replace the remote controller Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If itis not between DC 10V and DC16V the indoor controller board must be defective Check if the remote controller wire is short circuited Replace the indoor controller board Before repair Frequent calling from customers Phone Calls From Customers How to Respond Unit does not operate at all The operating display of remote controller does not come on Check if power is supplied to air conditioner Nothing appears on the display unless power is supplied Unit cannot be restarted for a while after it s stopped Wait around 3 minutes to restart unit The air conditioner is in a state of being protected by the microprocessor s directive Once the compressor is stopped the unit cannot be restarted for 3 minutes This control is also applied when the unit is turned on and off by remote controller or thermostat Error code appears and blinks on the display of remote controller Error code will be displayed if any protection devices o
51. Connection Lead lt L1 Phase gt LED1 LED2 LED lt Operation Inspection Indicators gt TH8 Thermistor lt Heatsink gt Connection Lead lt L2 Phase gt 55 Connector lt Connection for Option gt TH32 Thermistor lt Shell gt El E2 Connection Terminal lt Ground gt CNM Connector lt A Control Service Inspection Kit gt LEV A Electronic Expansion Valve 52C 52C Relay CNMNT Connector lt Connected to Optional M NET Adapter Board gt DCL Reactor Controller Circuit Board CNVMNT _ Connector lt Connected to Optional M NET Adapter Board gt CY1 CY2 Capacitor F1 F4 Fuse lt T6 3AL250V gt CNDM Connector lt Connected for Option Contact Input gt ACTM Active Filter Module SWI Switch lt Forced Defrost Defect History Record CN51 Connector lt Connected for Option Signal output gt Reset Refrigerant Address gt 51 52 55 Relay When M NET adapter is connected 4 a gt LEVA TH32 TH7TH6 TH3 5 i SI SI 1 6 131 5 wm Em 58 MANET ADAPTER I 2 mme TH3 LEVA CNVMNTCNMNT 5882 22 2zE BLK RED WHT d WHT WHT WHT 25 Em Be BSE Seef gssssssssssseg gos 51 1 14 G 05 engg WHT zm cna 3 AS K
52. DS2 DS3 Diode Bridge 519 Switch TH3 Thermistor Outdoor Pipe IPM Power Module SWP Switch lt Pump Down TH4 Thermistor lt Discharge gt N F Noise Filter Circuit Board CN31 Connector Emergency Operation TH6 Thermistor Outdoor 2 Phase Pipe LI LO Connection Lead lt L1 Phase gt LED1 LED2 LED lt Operation Inspection Indicators TH7 Thermistor lt Outdoor gt NI NO Connection Lead lt L2 Phase gt SS Connector Connection for Option TH8 Thermistor lt Heatsink gt El E2 Connection Terminal lt Ground gt CNM Connector lt A Control Service Inspection Kit gt LEV A Electronic Expansion Valve 52C 52C Relay CNMNT Connector lt Connected to Optional M NET Adapter Board DCL Reactor Controller Circuit Board CNVMNT Connector Connected to Optional M NET Adapter Board CY1 CY2 Capacitor F1 F4 Fuse lt T6 3AL250V gt CNDM Connector lt Connected for Option Contact Input gt ACTM Active Filter Module SWI Switch lt Forced Defrost Defect History Record CN51 Connector lt Connected for Option Signal output CB Main Smoothing Capacitor Reset Refrigerant Address 51 52 Relay 1 MODEL SELECT 63L 63H TH7TH6 TH3 TH4 When M NET adapter is connected x x 1
53. Decrease of power supply voltage D Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Replace outdoor power circuit board 9 Check the facility of power supply Low pressure 63L operated Abnormal if 63L is operated under 0 03MPa during compressor operation 63L Low pressure switch A42N only Stop valve of outdoor unit is closed during operation Disconnection or loose connec tion of connector 63L on outdoor controller board 9 Disconnection or loose connection of 63L Defective outdoor controller board Leakage or shortage of refrigerant Malfunction of linear expansion valve 39 Check stop valve Turn the power off and on again to check if F3 is displayed on restarting If F3 is displayed follow the F3 processing direction Correct to proper amount of refrigerant Check linear expansion valve Refer to 10 6 Error Code Abnormal point and detection method Case Judgment and action Compressor overcurrent interruption Abnormal if overcurrent DC bus or com pressor is detected after compressor starts operating for 30 seconds Stop valve of outdoor unit is closed Decrease of power supply volt age Looseness disconnection or converse of compressor wiring connection Defective fan of indoor outdoor units Short cycle of indoor outdoor units Defective input circuit of out door
54. During group operation with indoor unit of multi refrigerant System if remote controller transmit to indoor unit while outdoor unit power supply of one refrigerant system is turned off or within 2 min utes of restart abnormality is detected Contact failure of transmission wire of remote controller or indoor unit Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving circuit of indoor unit or remote controller 43 Always try the followings when the error A7 occurs Turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If mal function was accidental the unit returns to normal Check address switch of abnormality gener ated address Check disconnection or looseness of abnor mality generated or abnormality detected transmission wire terminal block and con nector Check if tolerance range of transmission wire is not exceeded Check if type of transmission wire is correct or not If there were some troubles of O above repair the defective then turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If there was no trouble with above in single refrigerant system one outdoor unit controller of displayed address or attribute is def
55. LED display on outdoor controller circuit board Connect A Control service tool PAC SG50ST Refer to EA EC item if LED displays EA AC Check disconnecting or looseness of indoor outdoor unit connecting wire of indoor unit or outdoor unit Check all the units in case of twin indoor unit system Turn the power off and on again to check If abnormality generates again replace indoor controller board or outdoor controller circuit board Turn the power off and detach fan motor from con nector CNF1 2 Then turn the power on again If abnormality is not displayed replace fan motor If abnormality is displayed replace outdoor controller circuit board Check RS1 on outdoor noise filter board with tester If open is detected replace the board Other indoor controller board may have defect in case of twin indoor unit system Indoor outdoor unit communication error Signal receiving error Outdoor unit 1 Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes Contact failure of indoor out door unit connecting wire Defective communication circuit of outdoor controller circuit board 9 Defective communication circuit of indoor controller board Noise has entered into indoor outdoor unit connecting wire Check disconnection or looseness of indoor outdoor unit connecting wire of indoor or out door units Turn the power off and on again to
56. NN See the table on the right Display Model setting state Display Model setting state 00 20 01 21 02 22 03 23 PKA A GA L 04 24 PKA A FA L 05 25 PLA A BA 06 26 DL AA AA 07 27 08 28 09 29 0A 2A Ob 2b 0C 2C Od 2d 2 2 10 30 11 31 PCA A KA 12 32 PKA A HA LYKA L 13 33 14 34 15 35 16 36 17 37 18 38 19 39 1A 3A 1b 3b 1C 3C 1d 3d 1E 3E 1F 3F Display Capacity setting state Display Capacity setting state 00 10 42 01 11 02 12 03 13 04 14 05 15 06 12 16 07 17 08 18 09 18 19 0A 1A Ob 24 1b 0 1 Od 30 id 1 36 1 Wireless pair No indoor control board side setting Request code 165 Data display See the table the right Display Pair No setting state 00 No 0 01 No 1 J41 disconnected 02 No 2 J42 disconnected 03 No 3 J41 J42 disconnected 105 14 DISASSEMBLY PROCEDURE PUZ A18NHA4 PUZ A18NHA4 BS PUY A12 18NHA4 PUY A12 18NHA4 BS OPERATING PROCEDURE PHOTOS 1 Removing the top panel service panel front panel and Photo 1 Top panel Top panel back panel fixing screw 1 Remove the top panel fixing screws 4 x 10 one from the B right and two from the left side and detach the top panel 2 Remove 1 service panel fixing screw 4 x 10 and detach the ser
57. OO MODE FAN AUTO STOP ES VANE AUTO STAR LOUVER h TESTRUN SET o D RESET CLOCK o o TIH Refrigerant address display Temperature button HOUR button Procedure 1 Press the CHECK button twice 2 Press the temperature buttons 3 Point the remote controller at the sensor on the indoor unit and press the HOUR button 4 Point the remote controller at the sensor on the indoor unit and press the ON OFF button 33 CHECK lights and refrigerant address 00 blinks Check that the remote controller s display has stopped before continuing Select the refrigerant address of the indoor unit for the self diagnosis Note Set refrigerant address using the outdoor unit s DIP switch SW1 For more information see the outdoor unit installation manual f an air conditioner error occurs the indoor unit s sensor emits an intermit tent buzzer sound the operation lamp blinks and the error code is output It takes 3 seconds at most for error code to appear The check mode is cancelled Refer to the following tables for details on the check codes Output pattern A Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION el x os nv Jas 29 Repeated INDICATOR EUM i lamp blink
58. Outdoor unit SWA setting information Refer to 13 2 1 Detail Contents in Request Code 77 Outdoor unit SW5 setting information Refer to 13 2 1 Detail Contents in Request Code 78 Outdoor unit SW6 setting information Refer to 13 2 1 Detail Contents in Request Code 79 Outdoor unit SW7 setting information Refer to 13 2 1 Detail Contents in Request Code 80 Outdoor unit SW8 setting information Refer to 13 2 1 Detail Contents in Request Code 81 Outdoor unit SWO setting information Refer to 13 2 1 Detail Contents in Request Code 82 Outdoor unit SW10 setting information Refer to 13 2 1 Detail Contents in Request Code 83 84 M NET adapter connection presence absence eg eg 85 86 87 88 89 Display of execution of replace wash operation 90 Outdoor unit Microprocessor version information Examples Ver 5 01 0501 Ver Auxiliary information displayed after 91 Outdoor unit Microprocessor version information sub No version information Examples Ver 5 01 A000 A000 92 93 94 95 96 97 98 99 Displays postponement code is 100 Outdoor unit Error postponement history 1 latest Code displayed if no postponement code is present Displays postponement code is 101 Outdoor unit Error postponement history 2 previous Code displayed if no postponement code is present Displays postponement code is 102 Outdoor unit Error postponement histor
59. Serial communication error 1 Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective 2 Abnormal if communication between outdoor controller circuit board and M NET board is not available Breaking of wire or contact failure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board Breaking of wire or contact failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board Defective communication circuit of outdoor power circuit board Defective communication circuit of outdoor controller circuit board for outdoor power circuit board Breaking of wire or contact failure of connector between outdoor controller circuit board and M NET board Contact failure of M NET board power supply line 9 Noise has entered into M NET transmission wire 41 9 Check connection of each connector CN2 and CN4 between the outdoor controller circuit board and the outdoor power circuit board Replace outdoor power circuit board Replace outdoor controller circuit board D Check disconnection looseness or breaking of connection wire between outdoor controller cir cuit board CNMNT and M NET board CN5 Check disconnection looseness or breaking of connection wire between outdoor controller cir cuit board CNMNT and M NET board CND Check M NET tra
60. and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again Check transmission waveform or noise on transmission wire BUS BUSY 1 Overtime error by collision damage Abnormal if transmitting signal is not possible for 8 10 minutes continuously because of collision of transmission 2 Data could not reach transmission wire for 8 10 minutes continuously because of noise or etc Note The address and attribute displayed at remote controller indicate the con troller that detected abnormality Transmission processor could not transmit signal because short cycle voltage of noise and the like have entered into transmis sion wire continuously Transmission quantity has increased and transmission is not possible because there was wiring mistake of terminal block for transmission wire TB3 and terminal block for central control TB7 in outdoor unit 9 Transmission are mixed with others and occupation rate on transmission wire rose because of defective repeater a function to connector or disconnect trans mission of control and central control system of outdoor unit then abnormality is detected Check if transmission wire of indoor unit FRESH MASTER LOSSNAY or remote con troller is not connected to terminal block for central control TB7 of outdoor unit Check if transmission wire of indoor unit FRESH MASTER or LOSSNAY is not con
61. at remote controller is indicate the controller that did not reply ACK Common factor that has no rela tion with abnormality source The unit of former address does not exist as address Switch has changed while the unit was energized Extinction of transmission wire voltage and signal is caused by over range transmission wire Maximum distance 200m 656ft Remote controller line 12m 39ft Extinction of transmission wire voltage and signal is caused by type unmatched transmission wire With shield wire CVVS CPEVS With normal wire no shield VCTF VCTFK CVV CVS WR VVF VCT Diameter 1 25mm AWG 16 or more Extinction of transmission wire voltage and signal is caused by over numbered units Accidental malfunction of abnormality detected controller noise lightning surge Defective of abnormality gen erated controller If displayed address or attribute is out door unit Indoor unit detects abnormality when indoor unit transmitted to outdoor unit and there was no reply ACK Contact failure of transmission wire of outdoor unit or indoor unit Disconnection of transmission connector CN2M of outdoor unit Defective transmitting receiving circuit of outdoor unit or indoor unit If displayed address or attribute is indoor unit remote controller detects abnormal ity when remote controller transmitted to indoor unit and there was no reply ACK
62. between the remote controller PLEASE WAIT is displayed for 6 min and indoor unit utes at most in case of indoor outdoor unit Communication error between the indoor and outdoor communication error Check LED3 on unit indoor controller board Outdoor unit protection device connector is open 1 When LEDS is not blinking Check indoor outdoor connecting wire for miswiring Converse wiring of S1 and S2 or break of S3 wiring 2 When LEDS is blinking Indoor outdoor connecting wire is nor mal Check LED display on outdoor controller circuit board Refer to 10 10 Check protection device connector 63L and 63H for contact failure Refer to 10 9 When pressing the remote controller After cancelling to select function from the remote Normal operation operation switch the OPERATION controller the remote controller operation switch will display is appeared but it will be not be accepted for approx 30 seconds turned off soon 45 Phenomena Factor Countermeasure 4 Even controlling by the wireless remote controller no beep is heard and the unit does not start operat ing Operation display is indicated on wireless remote controller The pair number settings of the wireless remote controller and indoor controller board are mismatched Check the pair number settings When operating by the wireless remote controller beep sound is heard however unit does not start operating
63. blown out from the unit Press the button and check whether strong air is blown out MODE VANE AUTOSTAR e from the unit CHECK LOUVER 9 Press button and check whether the auto vane operates ERI properly TESLRUN i Press the ON OFF button to stop the test run D SET RESET CLOCK 2 Note Point the remote controller towards the indoor unit receiver while following steps to C It is not possible to run in FAN DRY or AUTO mode 30 10 3 HOW TO PROCEED SELF DIAGNOSIS 10 3 1 When a Problem Occurs During Operation Ifa problem occurs in the air conditioner the indoor and outdoor units will stop and the problem is shown in the remote controller display CHECK and the refrigerant address are displayed on the temperature D display and the error code and unit number are displayed alternately as a shown below If the outdoor unit is malfunctioning the unit number will be 00 In the case of group control for which remote controller controls jf TEMP Dout multiple refrigerant systems the refrigerant address and error code of the VITA unit that first experienced trouble i e the unit that transmitted the error D sooxc OMEN eu code will be displayed DES L WI To clear the error cod
64. check Replace indoor controller board or outdoor controller circuit board if abnormal ity is displayed again Indoor outdoor unit communication error Transmitting error Outdoor unit 1 Abnormal if 0 receiving is detected 30 times continuously though outdoor con troller circuit board has transmitted 1 2 Abnormal if outdoor controller circuit board could not find blank of transmission path for 3 minutes Indoor outdoor unit connecting wire has contact failure Defective communication circuit of outdoor controller circuit board Noise has entered power supply Noise has entered indoor out door unit connecting wire Check disconnection or looseness of indoor outdoor unit connecting wire Turn the power off and on again to check Replace outdoor controller circuit board if abnormality is displayed again Non defined error code This code is displayed when non defined error code is received Noise has entered transmission wire of remote controller Noise has entered indoor out door unit connecting wire 9 Outdoor unit is not power inverter models Model name of remote control ler is PAR S25A C Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again Replace outdoor unit with power inverter type outdoor unit Replace remote controller with MA remote controller
65. controller Function selection using wireless remote controller is available only for refriger ant system with wireless function Refrigerant address cannot be specified by the wireless remote controller Flow of function selection procedure The flow of the function selection procedure is shown below This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation A The procedure is given after the flow chart MITSUBISHI ELECTRIC LI Check the function selection setting Q Switch to function selection mode Troubleshooting mode is the mode entered when Enter address 50 in troubleshooting you press the CHECK button twice to display mode then press the HOUR button CHECK ON OFF I TEMP 9 Specify unit No 01 since the function applies to unit 01 Set address 01 while still in troubleshooting mode then press the MINUTE button XM Note You can t specify the refrigerant address Change FAN AUTOSTOP unit No Select mode No 24 function that raises set temperature by 4 degrees during HEAT operation NO VANE AUTOSTART Set address 24 while still in troubleshooting mode then press the HOUR button amp LOUVER h Select setting No 02 OFF E Set address 02 while still in troubleshooting mode then press the HOUR button min C eer coc
66. controller board Defective compressor Open stop valve Check facility of power supply G Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Check indoor outdoor fan Solve short cycle Replace outdoor controller circuit board Check compressor Refer to 10 6 x Before the replacement of the outdoor controller circuit board disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases U V W during test run No defect on board if voltage among phases U V V W and W U is same Make sure to perform the voltage check with same performing frequency Remote controller transmission error E0 signal receiving error E4 Abnormal if main or sub remote control ler cannot receive normally any trans mission from indoor unit of refrigerant address 0 for 3 minutes Error code EO Abnormal if sub remote controller could not receive for any signal for 2 minutes Error code EO Abnormal if indoor controller board can not receive any data normally from remote controller board or from other indoor controller board for 3 minutes Error code E4 Indoor controller board cannot receive any signal from remote controller for 2 minutes Error code E4 Contact failure at transmission wire of remote controller All remote controllers are set as sub remote controller In this case EO i
67. displayed refer to Judgement and action for U3 Check linear expansion valve Refer to 10 6 7 Error Code Abnormal point and detection method Case Judgment and action U3 5104 TH32 5132 Open short circuit of discharge temperature thermistor TH4 comp shell thermistor TH32 Abnormal if open 3 37 F or less short 217 C 422 F or more is detected during compressor operation Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting Disconnection or contact failure of connector TH4 TH32 on the outdoor controller circuit board Defective thermistor Defective outdoor controller circuit board D Check connection of connector TH4 TH32 on the outdoor controller circuit board Check breaking of the lead wire for thermistor TH4 TH32 Refer to 10 9 Check resistance value of thermistor THAI TH32 or temperature by microprocessor Thermistor TH4 TH32 Refer to 10 6 SW2 on A Control Service Tool Refer to 10 10 8 Replace outdoor controller board U4 TH3 5105 TH6 5107 TH7 5106 TH8 5110 Open short of outdoor unit thermistors TH3 TH6 TH7 and TH8 Abnormal if open or short is detected during compressor operation Open detection of thermistors TH3 and TH6 is inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting XCheck whic
68. for error situation To switch the setting press the ON OFF button CALL OFF The set contact numbers not displayed in case of error CALL The set contact numbers are displayed in case of error CALL The contact number can be set when the display is as shown on the left Setting the contact numbers To set the contact numbers follow the following procedures Move the flashing cursor to set numbers Press the TEMP V and A button to move the cursor to the right left Press the CLOCK V and A button to set the numbers 4 4 Display change setting 1 Temperature display C F setting To switch the setting press the ON OFF button The temperature unit is used F The temperature unit F is used 2 Room air temperature display setting To switch the setting press the ON OFF button ON The room air temperature is displayed OFF The room air temperature is not displayed 3 Automatic cooling heating display setting To switch the setting press the ON OFF button ON One of Automatic cooling and Automatic heating is displayed under the automatic mode is running OFF Only Automatic is displayed under the automatic mode Function selection flowchart Normal display Display when the air conditioner is not running Hold down the button and press the button for 2 seconds Setting
69. function selection The unit number changes to 00 01 02 03 04 and AL each time a button is area pressed ly ay i FUNCTION 2 gto Unit number SELECTION uu DU OD display section gt Gn E arb EI To set modes 01 to 06 or 15 to 22 select unit number 00 When the refrigerant address and unit number are confirmed by pressing the To set modes 07 to 14 or 23 to 28 carry out as follows To set each indoor unit individually select 01 to 04 To set all the indoor units collectively select AL Confirm the refrigerant address and unit number Press the MODE button to confirm the refrigerant address and unit number After a while will start to blink in the mode number display area Mode number display section N 88 will blink in the room temperature display area if the selected refrigerant address does not exist in the system Furthermore if appears and blinks in the unit number display area and the refrigerant address display area also blinks there are no units that corre spondtothe selected unit number In this case the refrigerant address and unit number may be incorrect so repeat steps and to set the correct ones Select the mode number Press the TEMP buttons and A to set the desired mode number Only the selectable mode numbers can be selected Select the setting conte
70. indoor temperature even though it is not clogged 87 12 FUNCTION SETTING 12 1 UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller The setting of function for each unit can only be done by the remote controller Select function available from the table 1 1 Functions available when setting the unit number to 00 Select 00 referring to setting the indoor unit number lt Table 1 gt Function selections Mode No Function Settings Wired remote controller Setting No RF thermistor 6 Initial setting when sent from the factory Remarks Power failure Not available 01 automatic recovery Available 101 The setting is g applied to all the units in the same refrigerant system 1 2 Indoor temperature Average data from each indoor unit 1 detecting Data from the indoor unit with remote controllers 2 Data from main remote controller 3 LOSSNAY Not supported 1 connectivity Supported indoor unit dose not intake outdoor air through LOSSNAY 2 Supported indoor unit intakes outdoor air through LOSSNAY 3 1 2 1 2 1 2 1 2 Power supply 230V voltage 208V Frost prevention 2 36 F Normal temperature 37 F Humidifier control When the compressor operates the humidifier also operates When the fan operates the humidifier also operates Change of Stand
71. language English Press the operation mode button Press theTIMER MENU button Press theTIMER ON OFF button Hold down the button and press the button for 2 seconds e controller function selection mode Change English Language Dot display Geman msusi GE Spanish BW RW Russian O omeny oo Za LA Italian chinese d d French y Japanese Function Operation lock setting is not used selection Initial setting value All operation buttons except On Off button are locked All operation buttons are locked The automatic mode is displayed when the operation mode is selected Initial setting value The automatic mode is not displayed when the operation mode is selected he temperature range limit is not active Initial setting value he temperature range can be changed on cooling dry mode he temperature range can be changed on heating mode he temperature range can be changed on automatic mode Automatic filter elevation panel up down operation mode Not necessary to s
72. measure the resistance with a tester At the ambient temperature 10 C 30 50 F 86 F Normal Abnormal 160kQ 410kQ TH4 TH32 TH3 TH6 4 3kQ 9 6kQ TH7 TH8 39kQ 105kQ Open or short Fan motor MF1 MF2 Refer to next page Solenoid valve coil lt Four way valve gt 21S4 Measure the resistance between the terminals with a tester At the ambient temperature 20 C 68 F Normal Abnormal A18 36 A42 150041500 2350 1700 Open or short Motor for compressor U Measure the resistance between the terminals with a tester Winding temperature 20 68 F Normal Abnormal A12 18 0 3200 A24 30 36 A42 0 8800 0 2660 Open or short Linear expansion valve LEV A For A12 18 Fie Brown Blue Orange Yellow White Disconnect the connector then measure the resistance with a tester Winding temperature 20 C 68 F Normal Abnormal Red White Brown Yellow Brown Blue Red Orange 46 40 Open or short Linear expansion valve LEV A For A24 42 Disconnect the connector then measure the resistance with a tester Winding temperature 20 C 68 F Normal Abnormal Gray Black Gray Red Gray Yellow Gray Orange 46 30 Open or short Solenoi
73. needed to check the resistance RS1 on the noise filter circuit board Defective outdoor power circuit board Defective outdoor controller circuit board Check following items a Power supply breaker b Connection of power supply terminal block TB1 c Connection of power supply terminal block TB1 Check following items a Connection of power supply terminal block TB1 b Connection of terminal on outdoor power circuit board A12 A24N Disconnection of connector R or S Refer to 10 9 A30 A42N Disconnection of connector TABT or TABS Refer to 10 9 G Check connection of the connector CNDC on the outdoor controller circuit board Check connection of the connector LD1 and LD2 for A12 A24N and CNDC for A30 A36N on the outdoor power circuit board Refer to 10 9 Check connection of reactor DCL or ACL A12 A24N Check connection of LO and NO on the outdoor noise filter circuit board Check connection of R and S on the outdoor power circuit board A30 A42N Check connection of L1 and L2 on the active filter module ACTM Refer to 10 9 a Check connection of outdoor noise filter circuit board b Replace outdoor noise filter circuit board Refer to 10 9 Replace outdoor power circuit board Replace controller board When items above are checked but the units cannot be repaired 63L connector open Abnormal if 63L connector circuit is open for 3 minutes continuou
74. of each error code refer to the indoor unit s installation manual or service handbook Alternating Display SELF CHECK P 5 SELF r NN lt gt Dm 7 AW nn LILI Error code 2 or 4 See Address 3 digits or unit number 2 digits lt When there is no error code history gt lt When there is no corresponding unit gt ERROR GORE LILI e Reset the error history Display the error history in the diagnosis result display screen see step Nr SELF CHECK D E ZELF CHECK 0 I pus ERRGR ERROR Y nn zu LU I OU LILI 31 ahi When the error history is reset the display will look like the one shown below Press the ON OFF button t thin 3 ds The self d CUI 19 Press the ON OFF S e Mis WI s SECO NER ne setcotagnoss However if you fail to reset the error history the error content will be displayed again address or refrigerant address will blink SELF CHECK SELFCHECK 2727 gt ERROR nn nn LILI e LILI Cancel self diagnosis Self diagnosis can be cancelled by the following 2 methods Press the CHECK button twice within 3 seconds gt Self diagnosis will be cancelled and the screen will return to the previous state in effect before the start of self diagnosis Press the ON OFF button gt Self diagnosis wi
75. parts box 3 Loosen the clamp for the lead wire under the electrical parts box See Photo 4 4 Pull out the thermistor lt Shell gt TH32 from the holder of the compressor shell i Thermistor Shell TH32 112 OPERATING PROCEDURE PHOTOS 8 Removing the 4 way valve coil 21S4 linear expansion valve coil LEV A and bypass valve coil SV 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 Removing the 4 way valve coil 4 Remove 4 way valve coil fixing screw M4 x 6 5 Remove the 4 way valve coil by sliding the coil toward you 6 Disconnect the connector 2154 green on the controller board in the electrical parts box Removing the linear expansion valve coil 4 Remove the linear expansion valve coil by sliding the coil upward 5 Disconnect the connectors LEV A white on the controller circuit board in the electrical parts box Removing the bypass valve coil 4 Remove the bypass valve coil fixing screw M4 x 6 5 Remove the bypass valve coil by sliding the coil upward 6 Disconnect the connector SV2 blue on the controller circuit board in the electrical parts box Photo 8 4 way valve coil 4 way Linear expansion Bypass Bypass valve valve valve coil LEV A valve coil fixing coil SV screw 9 Removing the 4 way valve 1 Remove the service panel See Figure
76. supply wires 16 PUZ A24NHA4 PUZ A24NHA4 BS PUY A24NHA4 PUY A24NHA4 BS LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Pow
77. thermistor lt Outdoor gt TH7 since they are combined together Refer to No 5 below to remove thermistor lt Outdoor gt 5 Removing the thermistor lt Outdoor gt TH7 Photo 5 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the connector TH7 red on the controller circuit board in the electrical parts box 4 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 4 5 Pull out the thermistor Outdoor TH7 from the sensor holder Note In case of replacing thermistor Outdoor TH7 replace it together with thermistor Outdoor 2 phase pipe TH6 since they are combined together Lead wire of Kongs lt Outdoor gt TH7 Sensor holder Refer to No 4 above to remove thermistor lt Outdoor 2 phase pipe gt Thermistor lt Outdoor pipe gt TH3 6 Removing the thermistor lt Outdoor pipe gt TH3 1 Remove the service panel See Figure 1 2 Disconnect the connector TH3 white on the controller circuit board in the electrical parts box 3 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 4 4 Pull out the thermistor lt Outdoor pipe gt TH3 from the sensor holder 7 Removing the thermistor lt Shell gt TH32 Photo 7 1 Remove the service panel See Figure 1 2 Disconnect the connector TH32 black on the controller circuit board in the electrical
78. valve fault Refrigerant shortage Lack of insulation for refrigerant piping Filter clogging Heat exchanger clogging Air duct short cycle Bypass circuit of outdoor unit fault Discharging temperature and indoor heat exchanger temperature does not rise Inspect the failure by checking discharging pressure Replace linear expansion valve If refrigerant leaks discharging tempera ture rises and LEV opening increases Inspect leakage by checking the tempera ture and opening Check pipe connections for gas leakage G Check the insulation Open intake grill and check the filter Clean the filter by removing dirt or dust on it If the filter is clogged indoor pipe tem perature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pres sure Clean the heat exchanger Remove the shield Check refrigerant system during operation 8 OFor 3 minutes after temperature adjuster turns off the compressor will not start operating even if temperature adjuster is turned on GFor 3 minutes after temperature adjuster turns on the compressor will not stop operating even if temperature adjuster is turned off Compressor stops operating immediately when turning off by the remote controller Normal operation For protection of compressor 46 Normal operation Symptoms PLEASE WAIT is kept being displayed on the remote controller
79. 0 950 950 300 23 330 30 330 30 330 30 330 30 600 943 943 943 1350 31 1 2 37 12 32 37 12 32 37 12 32 37 12 32 11 13 16 7 8 13 1 3 16 13 1 3 16 13 1 3 16 13 1 3 16 H H 23 5 8 37 1 8 37 1 8 37 1 8 53 5 32 Weight 41 75 75 75 118 91 165 165 165 260 Refrigerant R410A 1 7 3 0 3 0 3 0 4 5 3 12 16 6 10 16 6 10 16 6 10 16 10 Control Linear expansion valve Oil Charged Ether FV50S 0 87 28 Refrigerant piping Pipe size OD Liquid 9 52 3 8 Pipe size OD Gas 15 88 5 8 Connection method 1 ndoor Flared Connection method Outdoor Flared Height difference IU OU m Max 30 ft Max 100 Piping length m Max 50 ft Max 165 Service Ref PUY A12NHA4 PUY A12NHA4 BS PUY A18NHA4 PUY A18NHA4 BS PUY A24NHA4 PUY A24NHA4 BS PUY A30NHA4 PUY A30NHA4 BS PUY A36NHA4 PUY A36NHA4 BS PUY A42NHA4 PUY A42NHA4 BS Power supply Phase Single Cycle Voltage 60Hz Breaker size External finish Munsell 3Y 7 8 1 1 Heat exchanger Plate fin coil Defrost method Crankcase heater Compressor Hermetic Model SNB130FQCM1
80. 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 4 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 5 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 6 Remove the 4 way valve coil See Photo 8 7 Recover refrigerant 8 Remove the welded part of 4 way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxi dized 10 Removing the linear expansion valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 4 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 5 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 6 Remove the linear expansion valve See Photo 8 7 Recover refrigerant 8 Remove the welded part of linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov i
81. 123456 Ve POWER SUPPLY 208 230V PUv A3eNHA4 ON a MB ac BR LE AED E 123456 XUse copper supply wires X2 SW5 1 to 4 Function switch M NET ADAPTER SYMBOL NAME TB7 Terminal Block lt M net connection CN5 Connector lt Transmission gt CND Connector lt Power Supply gt CN2M Connector lt M NET communication gt SWI Switch lt Status of communication gt 51 11 Switch lt Address setting 1s digit gt SW12 Switch Address setting 10s digit LED1 LED lt Power Supply DC5V gt LED2 LED lt Connection to Outdoor Unit LED3 LED Transmission Sending LED4 LED Transmission Receiving LED5 LED lt Power Supply DC12V gt 18 PUZ A42NHA4 PUZ A42NHA4 BS PUY A42NHA4 PUY A42NHA4 BS LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply Indoor Outdoor gt P B Power Circuit Board SWA Switch lt Test Operation gt MC Motor for Compressor TABU V W Connection Terminal U V W Phase SW5 Switch lt Function Switch gt MF1 MF2 Fan Motor TABS T Connection Terminal lt L1 L2 Phase gt SW6 Switch lt Model Select gt 2184 Solenoid Valve Four Way Valve TABP1 P2 P Connection Terminal DC Voltage SW7 Switch lt Function Setup gt 63H High Pressure Switch TABN1 N2 N Connection Terminal lt DC Voltage gt SW8 Switch lt Function Setup gt 63L Low Pressure Switch
82. 227 Connect to the 2 ua MEME 7 Upper side Lower side c N2 Non connect Connect to the outdoor power circuit board TABP1 Connect to the outdoor power gt circuit board CNAF 1 GND lo Connect to the outdoor power 28 Contra Connect to the outdoor power circuit board TABN1 4 5 Not used circuit board TABN2 6 1 Control signal Tester check points of Active filter module Error condition Normal value reference Symptom when the unit is in trouble and lo open less than 10 The unit does not operate can not be switched ON short 100kQ 1MQ O The breaker operates L2 Spang open x1 The unit does not operate can not be switched ON U9 Abnormal stop X2 short 1MQ_ O The breaker operates P L2 ang open x1 The unit does not operate can not be switched ON U9 Abnormal stop X2 short 100kQ 1MQ_ O The breaker operates P and lo open x1 The unit does not operate can not be switched ON U9 Abnormal stop X2 short 100kQ 1MQ_ O The breaker operates L2 and lo open x1 D The unit does not operate can not be switched ON U9 Abnormal stop X2 1 The symptom when the unit is in open error condition is described to determine open error by tester check 2 SW2 setting on Code 20 display 1 6 70 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS
83. 8 2 SEPARATE INDOOR UNIT OUTDOOR UNIT POWER SUPPLIES The following connection patterns are available The outdoor unit power supply patterns vary on models 1 1 System The optional indoor power supply terminal kit is required Outdoor unit power supply Wiring circuit breaker or isolating switch Outdoor unit Indoor unit outdoor unit connecting cords Remote controller Indoor unit Indoor unit power supply Option Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units Simultaneous twin system OG N XC 2 Outdoor unit power supply Wiring circuit breaker or isolating switch Outdoor unit Indoor unit outdoor unit connecting cords Remote controller Indoor unit Indoor unit power supply Option Indoor unit earth Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units If the indoor and outdoor units have separate power supplies refer to the table below Change the indoor unit electrical box wiring refering to the figure in the right and the DIP switch settings of the outdoor unit control board Indoor unit specifications Indoor unit electrical box connector con nection change Required Label affixed near each wiring diagram for the indoor and outdoor units Reduited Outdoor unit DIP switch settings when using
84. AC is input Connect to the terminal block TB1 67 Outdoor power circuit board PUZ A18NHA4 PUZ A18NHA4 BS PUY A12 18NHA4 PUY A12 18NHA4 BS LD1 LD2 280 380V DC Connect to the outdoor controller circuit board CNDC CN2 Connect to the outdoor controller circuit board CN2 Outdoor power circuit board gt Transmitting signal to the outdoor controller circuit board 0 5V DC 9 9 Zero cross signal 0 5V DC Not used 16V DC D 2 Si 16V DC Brief check of DIP IPM and DIP PFC Usually they are in a state of being short circuited if they are broken Measure the resistance in the following points connectors etc If they are short circuited it means that they are broken 1 Check of DIP IPM P U P V P W N U N V N W 2 Check of DIP PFC P R P S R N S N gt g a 8 5 U VW Connect to the ACL Connect to the compressor MC 208 230V AC Voltage among phases 5V to 180V AC DIP PFC LD9 d Connect to T the earth Only A24 CN3 Thermistor Connect from the Primary current detection lt Heatsink gt outdoor controller Connect to the outdoor TH8 circuit board noise filter circuit board CN5 68 Outdoor power circuit board Brief check of POWER MODULE x Usually th i tate of bei hort circuited if th broken PUZ A30 36 42NHA4 Measure the EE ln following points Onnela SCH T PUZ A30 36 42NHA4
85. ALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of external directive There might be a case that CENTRALLY CONTROLLED INDICATOR Will not be displayed Phone Calls From Customers How to Respond A white mist is expelled from the indoor unit This is not a malfunction This may occur when the operation gets started in the room of high humidity Water or moisture is expelled from the outdoor unt Cooling when pipes or piping joints are cooled they get sweated and water drips down Heating water drips down from the heat exchanger Use optional parts Drain Socket and Drain pan if these water needs to be collected and drained out for once The display of wireless remote controller gets dim or does not come on The indoor unit does not receive a signal from remote controller at a long distance Batteries are being exhausted Replace them and press the reset button of remote controller 54 10 6 HOW TO CHECK THE PARTS PUZ A18 24 30 36 42NHA4 PUY A12 18 24 30 36 42NHA4 Parts name PUZ A18 24 30 36 42NHA4 BS PUY A12 18 24 30 36 42NHA4 BS Check points Thermistor TH3 lt Outdoor pipe gt Thermistor TH4 lt Discharge gt Thermistor TH6 lt Outdoor 2 phase pipe gt Thermistor TH7 Outdoor Thermistor TH8 lt Heatsink gt Thermistor TH32 lt Shell gt Disconnect the connector then
86. Action by the switch operation Switch Function ON y wi P Effective timing Type of Switch No function Power failure automatic recovery X2 Auto recovery No auto recovery When power supply ON No function Model select Following SW5 6 reference SW7 1 SW7 2 emand switch ON Setting of demand OFF OFF 0 Operation stop canmol ON OFF 50 2 OFF ON 7596 Max Hz setting cooling Max Hz cooling x 0 8 Normal Max Hz Max Hz heating x 0 8 Normal No function Defrost setting For high humidity Normal No function Function switch Valid Normal No function MODEL MODEL PUZ A18NHA4 on PUY A12NHA4 0 om ON PUZ A24NHM OFF PUY A18NHA4 on Model select ON ON PUZ AS0NHA4 OFF OFF ON PUY ADANHM on ON ON ON PUY A30NHA4 PUZ A36NHA OFF OFF on ON ON PUZ A42NHA4 OFF JH OFF ON 1 PUY A36NHA4 OFF o NM N mom on 1234
87. Ay eut CN2M Connector M NET communication INDOOR SWI Switch lt Status of communication gt POWER SUPPLY UNIT SW11 Switch lt Address setting 1s digit 208 230V 60Hz SW12 Switch lt Address setting 10s digit LED1 LED lt Power Supply DC5V gt Use copper supply wires LED2 LED lt Connection to Outdoor Unit gt LED3 LED lt Transmission Sending gt LED4 LED lt Transmission Receiving gt LED5 LED lt Power Supply DC12V gt 17 PUZ A30 36NHA4 PUZ A30 36NHA4 BS PUY A30 36NHA4 PUY A30 36NHA4 BS LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply Indoor Outdoor gt P B Power Circuit Board SWA Switch lt Test Operation gt MC Motor for Compressor TABU V W Connection Terminal lt U V W Phase gt SW5 Switch lt Function Switch gt MF1 Fan Motor TABS T Connection Terminal lt L1 L2 Phase gt SW6 Switch Model Select 2184 Solenoid Valve Four Way Valve 1 2 Connection Terminal lt DC Voltage SW7 Switch lt Function Setup gt SV Solenoid Valve Bypass Valve TABN1 N2 Connection Terminal lt DC Voltage gt SW8 Switch Function Setup 63H High Pressure Switch DS2 053 Diode Bridge SWI Switch TH3 Thermistor lt Outdoor Pipe gt IPM Power Module SWP Switch lt Pump Down TH6 Thermistor Outdoor 2 Phase Pipe N F Noise Filter Circuit Board CN31 Connector Emergency Operation TH7 Thermistor lt Outdoor gt LI LO
88. BS T ne See e it means that they are broken Chec PUY A30 36 42NHA4 TABP1 TABS TABP1 TABT TABN1 TABT PUY A30 36 42NHA4 BS 2 Check of DIP IPM P U P V P W N U N V N W CN2 Connect to the outdoor controller circuit board CN2 Transmitting signal to the outdoor controller circuit board 0 5V DC CNDC Q G Zero cross signal 0 5V DC 280 380V DC 18V DC Connect to the outdoor 16V DC DIP IPM controller circuit board 16V DC b 2 PO un 77710 ams amp lt T7TABS TABT Connect to the CNAF outdoor noise fil Connect to ACTM ter circuit board Ir Voltage among vel NIR phases 20 112 208 230V CN3 Thermistor TH8 lt Heatsink gt CN5 Detection of primary current Connect to the outdoor noise filter circuit board CN5 CN4 Connect to the outdoor controller circuit board CN4 TABP1 Connect to 52C TABN1 ri Connect to ACTM TABP2 SC P2 Connect to ACTM TABU V W Connect to the compressor MC Voltage among phases 10V 180V AC TABN Connect to the Connect tothe Smoothing capacitor smoothing capacitor CBO CB A42N only A42N only TABP TABN2 Connect to ACTM 69 Active filter module PUZ A30 36 42NHA4 PUZ A30 36 42NHA4 BS PUY A30 36 42NHA4 PUY A30 36 42NHA4 BS P Connect to the outdoor power circuit board TABP2 L1 L2 L 2 zz o LLY 2
89. C Replace outdoor controller board Y OK Check the operation END Replace the fan motor 56 10 7 HOW TO CHECK THE COMPONENTS lt Thermistor feature chart gt Low temperature thermistors Thermistor Outdoor pipe TH3 Thermistor Outdoor 2 phase pipe TH6 Thermistor Outdoor TH7 Thermistor RO 15kQ 3 B constant 3480 2 1 1 t C Rt 15exp 3480 27341 275 1 4 15exp 3480 57 3271 8 273 OC 32 F 15kQ 30C 86 F 4 3kQ 10 C 50 F gek 40 C 104 F 3 0kQ 20 C 68 F 6 3kQ 25C 775 5 2kQ Medium temperature thermistor Thermistor lt Heatsink gt TH8 Thermistor R50 17kQ 2 B constant 4170 3 1 t C Rt 17exp 4170 57344 323 1 1 RT 17exp 4170 973 T 32 1 8 323 OC 32 F 180kQ 25 C 77 F 50kQ 50 C 122 17kQ 70 C 158 F 8kQ 90 C 194 F 4kQ High temperature thermistor Thermistor Discharge TH4 for A42 e Thermistor Shell TH32 for A12 18 24 30 36 Thermistor R120 7 465kQ 2 B constant 4057 2 1 1 t C Rt 7 465exp 4057 27341 393 H 1 1 T 7 465 4057 273 32 4 8 393 20 C 68 F 250kQ 30 C 86 F 160kQ 40 C 104 F 104kQ 50 C 122 F 60 C 140F 48kQ 70 C 158 F 34kQ 80C 176F 24kQ 90 C 194 F 17 5kQ 100 C 212 F 13 0kQ 110 C 230 F
90. D 1 1 00 1E 1 1 1 1 4 0 00 1F 0 Switch OFF 1 Switch ON 1 00 20 5 4 Sw9 SW10 Data display 1lolololo 1 00 21 1 2 00 22 0 0 00 00 1 l11ololo 1 00 23 1 0 00 01 1 1 00 24 0 1 00 02 1 1 00 25 1 1 00 03 1 1 1 00 26 1 1 00 27 00 28 1 1 00 29 1 0 1 00 2 1 1 00 2B 1 0 1 00 2C 1 0 1 1 1 00 2D 1 0 1 00 2 1 1 1 00 2 00 30 11 1 1 00 31 1 1 00 32 1 1 1 00 33 00 34 1 1 00 35 1 00 36 421 1 00 37 71 00 38 1 1 1 1 00 39 1 71 00 1 1 1 00 3B olo 1 1 1 1 00 3C 1 1 1 1 00 3D 1 1 00 1 1 1 TA TA 00 104 Indoor unit Model setting information Request code 162 Data display See the table on the right Indoor unit Capacity setting information Request code 163 Data display
91. EE High pressure SCH n Thermistor Service 4 CUL protect switch d TH3 port Thermistor check e TH32 Distributor Accumulator Refrigerant flow in cooling Compressor 100 100 Refrigerant LIQUID pipe i2 5 Strainer ee tginer 9 52m 93 8 Stop valve Linear expansion valve with service port PUY A42NHA4 BS Low pressure protect Ball valve switch 6 Outdoor heat exchanger Bue i check Thermistor Refrigerant GAS pipe d TH6 15 88mm 5 8 b High fo Thermistor Service lt High pressure d TH3 port protect switch check m TASS Thermistor istri Accumulator ii EH THA Distributor Compressor Refrigerant flow in cooling Refrigerant LIQUID pipe Ed CH 9 52mm d3 8 7 Strainer Strainer 100 100 Stop valve with service port Linear expansion valve 26 1 Refrigerant recovering pump down Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit Turn on the power supply circuit breaker When power is supplied make sure that CENTRALLY CONTROLLED is not displayed on the remote controller If CENTRALLY CONTROLLED is displayed the refrigerant collecting pump down cannot be completed normally After the liquid stop valve is c
92. FDPMT Winding Registance Q 0 640 0 880 0 266 0 640 0 880 0 266 0 640 0 880 0 266 5 3 NOISE CRITERION CURVES PUY A12NHA4 PUY A12NHA4 BS MODE SPL dB LINE COOLING 46 _ 90 80 5 BQ 3 i E F 70 4 5 d NC 70 60 E a F 50 1 E 40 C 40 gt INC 50 ANN Waa 30 i INC 30 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 20 APPROXIMATE T THRESHOLD OF i r HEARING FOR LA INC 20 CONTINUOUS I fes NOISE 10 I T 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz PUY A24 30 36NHA4 PUY A24 30 36NHA4 BS PUZ A24 30 36NHA4 MODE ue PUZ A24 30 36NHA4 BS Hearinc _50_ 90 80 a 70 a o g 50 5 40 2 3 30 2 20 APPROXIMATE S T 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz MICROPHONE T E 5ft GROUND PUY A18NHA4 PUY A18NHA4 BS M
93. HA4 ON OFF ON le OFF 5678 1234 mmu E 123 a 4 PUY A42NHA4 ON OFF ON OFF a 2345678 E 1 2 SW5 1 to 4 Function switch M NET ADAPTER SYMBOL NAME TB7 Terminal Block lt M net connection CN5 Connector lt Transmission gt CND Connector lt Power Supply gt CN2M Connector lt M NET communication gt SWI Switch lt Status of communication gt Sw11 Switch lt Address setting 1s digit Sw12 Switch Address setting 10s digit LED1 LED lt Power Supply DC5V gt LED2 LED lt Connection to Outdoor Unit LED3 LED lt Transmission Sending LED4 LED Transmission Receiving LED5 LED lt Power Supply DC12V gt BLU 12 EE RED O RED PL L No T 0 wer lo ACTM 208 230V 60Hz copper supply wires 19 UWS POWER SUPPLY 8 WIRING SPECIFICATIONS 8 1 INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT A control application The following connection patterns are available The outdoor unit power supply patterns vary on models 1 1 System Simultaneous twin system Outdoor unit power supply Wiring circuit breaker or isolating swi
94. IRING METHOD Points to note 1 Outside the unit transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication Place them at intervals of more than 5 cm Do not put them in the same conduit tube 2 Terminal block TB7 for transmission wires should never be connected to 208 230V power supply If it is connected electronic parts on M NET P C board may burn out 3 Use 2 core x 1 25mm AWG16 shield wire CVVS CPEVS for the transmission wire Transmission signals may not be sent or received normally if different types of transmission wires are put together in the same multi conductor cable Never do this because this may cause a malfunction Group remote controller Power supply unit for transmission wire gr Refrigerant gier Refrigerant Refrigerant address 00 address 00 address 00 M NET M NET M NET address 01 address 02 address 03 X X ES ES A control A control A control remote remote remote controller controller controller It would be ok if M NET wire non polar 2 cores is arranged in addition to the wiring for A control 4 Ground only one of any appliances through M NET transmission wire shield wire Communication error may occur due to the influence of electromagnetic noise Ed error will appear on the LED display of outdoor unit
95. Lead wire of thermistor Sensor holder lt Outdoor gt TH7 6 Removing the thermistor lt Outdoor pipe gt TH3 and thermistor lt Discharge gt TH4 1 Remove the service panel See Figure 1 2 Disconnect the connectors TH3 white and TH4 white on the controller circuit board in the electrical parts box 3 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 4 4 Pull out the thermistor lt Outdoor pipe gt TH3 and thermistor lt Discharge gt TH4 from the sensor holder Photo 6 Thermistor lt Outdoor pipe gt TH3 Thermistor Discharge TH4 Compressor MC 117 OPERATING PROCEDURE PHOTOS 7 Removing the 4 way valve coil 2154 and linear expansion valve coil LEV A 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 Removing the 4 way valve coil 3 Remove 4 way valve coil fixing screw M4 x 6 4 Remove the 4 way valve coil by sliding the coil toward you 5 Disconnect the connector 2154 green on the controller circuit board in the electrical parts box Removing the linear expansion valve coil 3 Remove the linear expansion valve coil by sliding the coil upward 4 Disconnect the connectors LEV A white on the controller circuit board in the electrical parts box Removing the 4 way valve 1 Remove the service panel See Figure 1 2 Remove the top panel See F
96. MITSUBISHI ELECTRIC Changes for the Better SPLIT TYPE HEAT PUMP AIR CONDITIONERS SPLIT TYPE AIR CONDITIONERS Outdoor unit SERVICE MANUAL R410A Model names PUZ A18NHA4 PUZ A24NHA4 PUZ A30NHA4 PUZ A36NHA4 PUZ A42NHA4 PUZ A18NHA4 BS PUZ A24NHA4 BS PUZ A30NHA4 BS PUZ A36NHA4 BS PUZ A42NHA4 BS PUY A12NHA4 PUY A18NHA4 PUY A24NHA4 PUY A30NHA4 PUY A36NHA4 PUY A42NHA4 PUY A12NHA4 BS PUY A18NHA4 BS PUY A24NHA4 BS PUY A30NHA4 BS PUY A36NHA4 BS PUY A42NHA4 BS PUZ A24 30 36NHA4 PUY A24 30 36NHA4 Service Ref PUZ A18NHA4 PUZ A24NHA4 PUZ A30NHA4 PUZ A36NHA4 PUZ A42NHA4 PUZ A18NHA4 BS PUZ A24NHA4 BS PUZ A30NHA4 BS PUZ A36NHA4 BS PUZ A42NHA4 BS PUY A12NHA4 PUY A18NHA4 PUY A24NHA4 PUY A30NHA4 PUY A36NHA4 PUY A42NHA4 PUY A12NHA4 BS PUY A18NHA4 BS PUY A24NHA4 BS PUY A30NHA4 BS PUY A36NHA4 BS PUY A42NHA4 BS November 2010 No OCH481 NOTE This manual describes only service data of the outdoor units RoHS compliant products have lt G gt mark on the spec name plate CONTENTS 1 REFERENCE MANUAL 2 2 SAFETY PRECAUTION 3 3 FEATURES 6 4 SPECIFICATIONS eee 7 5 DATA ttstsstsstenssensssererccsssesssnnsssssnsassrersessessnsnrenns 9 6 OUTLINES AND DIMENSIONS nn 13 7 WIRING DIAG
97. Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the high pressure switch cover it with a wet cloth to prevent it from heating 210 F or more then braze the pipes so that the inside of pipes are not oxidized Photo 11 Bypass valve coil High pressure switch 63H Linear expansion valve coil LEV A 4 way valve 13 Removing the reactor ACL A24 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 4 Remove 3 reactor fixing screws 4 x 16 and remove the reactor The reactor is attached to the rear of the electrical parts box Photo 12 Reactor fixing screw Reactor ACL Reactor fixing screws Electrical parts box 114 OPERATING PROCEDURE PHOTOS 14 Removing the reactor DCL A30 36 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 4 Remove 4 reactor fixing screws 4 x 10 and remove the reactor The reactor is attached to the rear of the electrical parts box Photo 13 Reactor fixing screws Reactor fixing screws Electrical parts box 15 Removing the compressor MC 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 x 12 and remove the front co
98. ODE SPL dB LINE PUZ A18NHA4 COOLING 48 PUZ A18NHA4 BS HEATING 47 e e 90 4 4 S 1 q 5 80 toi 2 F F i m 70 a _ 60 gt 50 2 o 8 40 a a z 3 9 a z lt a 20 APPROXIMATE 5 HEARING FOR 2 lt CONTINUOUS NOISE L o 10 LE T T 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz PUY A42NHA4 PUY A42NHA4 BS MODE SPL dB LINE PUZ A42NHA4 COOLING 51 o o PUZ A42NHA4 BS HEATING 55 e e 90 1 5 2 ki S 80 m 70 a 60 gt 50 2 o D 40 a a z i 2 ME t N 30 ah a i ae EE ir i i 5 HEARING FOR E i NC 20 amp CONTINUOUS E NOISE r i 10 T T 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 10 5 4 STANDARD OPERATION DATA 5 4 1 Heat pump Representative matching PKA A18HA4 PKA A24KA4 PKA A30KA4 PKA A36KA4 PLA A42BA4 Mode COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING Total Capacity 18 000 19 000 24 000 26 000 30 000 32 000 34 200 37 000 42 000 45 000 Input 2 240 1 970 2 270 2 330 4 130 3 150 5 030 3 610 4 600 4 450 Indoor unit model PKA A18HA4 PKA A24KA4 PKA A30KA4 PKA A36KA4 PLA A42BA4 Phase Single Single Single Single Single Cycle 60Hz 60Hz 60Hz 60Hz 60Hz Voltage 230V 230V 230V 230V 230V Current 0 33A 0 36A 0 36A 0 57A 1 00A
99. Off On On On On Off On On pattern Self check Approx 2 5 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2 5 sec 0 5 sec 0 5 sec starts N 7 Start signal Y 1 received Number of blinks beeps in pattern indicates the check Number of blinks beeps in pattern indicates code in the following table i e n 5 for P5 the check code in the following table Output pattern B Beeper sounds Beep Beep Beep Beep OPERATION H zl Tod Te y _ isl Jana Repeated INDICATOR lamp blink Off d On On On On Off On o On pattern Self check Approx 2 5 sec Approx 3 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2 5 sec Approx 3 sec 0 5 0 5 sec starts V Vv 7 Start signal duy received Number of blinks beeps in pattern indicates the check Number of blinks beeps in pattern indicates code in the following table i e n 5 for U2 the check code in the following table Output pattern A Errors detected by indoor unit Wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code Symptom nemar Number of times 1 P1 Intake sensor error 2 P2 Pipe TH2 sensor error P9 Pipe TH5 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Drain sensor error Float switch connector open 5 P5 Drain pump error As for indoor PA Forced compressor stop due to water leakage abnormality
100. RAM 16 8 WIRING SPECIFICATIONS et re 20 9 REFRIGERANT SYSTEM DIAGRAM 25 10 TROUBLESHOOTING 28 11 EASY MAINTENANCE 85 12 FUNCTION SETTING 88 13 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 96 14 DISASSEMBLY PROCEDURE 106 NTERTE PARTS CATALOG OCBA81 1 REFERENCE MANUAL 1 1 INDOOR UNIT Model name Service Ref Service manual No PLA A12 18 24 30 36 42BA4 PLA A12 18 24 30 36 42BA4 OCH482 OCB482 PCA A24 30 36 42KA4 PCA A24 30 36 42KA4 OCH484 OCB484 PKA A12 18HA4 PKA A12 18HA4 OCH483 OCB483 PKA A24 30 36KA4 PKA A24 30 36KA4 TH OCH488 OCB488 PEA A12 18AA4 PEA A12 18AA4 TH HWE0807B PEAD A24 30 36 42AA4 PEAD A24 30 36 42AA4 TH HWE0905A 2 SAFETY PRECAUTION 2 1 ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminals all supply circuits must be disconnected 2 2 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes Do not use refrigerant other than R410A In case of using the existing pipes for R22 be careful with the followings Be sure to clean the pipes and make sure that the insides of the pipes are clean Change flare nut to the one prov
101. T button twice The TEST RUN appears on the screen Cooling mode Check if cool air blows and water is drained Ze MITSURISHI ELECTRIC Press OPERATION SWITCH Heating mode Check if warm air blows It takes a little TERT RUM 77 a EM button while until warm air blows c 59 Sal Gum 4 Press AIR DIRECTION Jbutton Check for correct motion of auto vanes Check the outdoor unit fan for The outdoor unit features automatic capacity control to Bu Tue ume janjang ajah u correct running provide optimum fan speeds Therefore the fan keeps n e 0 6 running at a low speed to meet the current outside air condition unless it exceeds its available maximum power Then in actuality the fan may stop or run in the reverse direction depending on the outside air but this does not D TEST button mean malfunction Press the ON OFF button to reset the test run in progress Pipe liquid temperature 7 Register the contact number In case of test run the OFF timer will be activated and the test run will automatically stop after 2 hours The room temperature display section shows the pipe temperature of indoor units during the test run Check that all the indoor units are running properly in case of simultaneous twin operation Malfunctions may not be dis played regardless of incorrect wiring 1 After turning on the power supply the system will go into startup mode PLEASE WAIT will blink on the di
102. V DC 24V DC 12V AC 208 230 V AC 208 230 V DC 24V DC 12V AC 208 230 V AC 208 230 V DC 24V DC 12V AC 208 230 V AC 208 230 V DC 24V DC 12V AC 208 230 V AC 208 230 V DC 24V DC 12V AC 208 230 V 1 Max 50 m 165 ft 2 The 10 m 30 ft wire is attached in the remote controller accessory Max 1500 ft 3 The figures are NOT always against the ground S3 terminal has DC 24 V against S2 terminal However between S3 and 51 these terminals are NOT electrically insulated by the transformer or other device 4 Use earth leakage breaker NV Notes 1 Wiring size must comply with the applicable local and national code 2 Use copper supply wires 3 Use wires rated 600V or more for the power supply cables and the indoor outdoor unit connecting cables 4 Install an earth longer than other cables 230V Single phase Isolator 3 poles isolator 51 51 1 D A Contro 52 i S2 A Control Outdoor Unit Indoor Unit 3 3 Warning In case of A control wiring there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line Therefore please turn off the main power supply when servicing And do not touch the 51 S2 S3 terminals when the power is energized If isolator should be used between indoor unit and outdoor unit please use 3 pole type 20
103. Wiring replace Connect to the noise CNM filter circuit board Connect to A control CN52C service tool CNMNT CN4 Connect to Transmission to out M NET adapter CNS sek pend nd oar CNVMNT SV2 Connect to M NET adapter CND a R LEV A Linear expansion valve a lu 2184 63L Low pressure switch _ ae y TH4 TH3 ONE Thermistor Connect to the outdoor Outdoor pipe power circuit board CN2 TH7 6 Reception from Thermistor power circuit board lt Outdoor 2 phase pipe gt Zero cross signal 0 5V DC 1832 18V DC Thermistor lt Shell gt 9 6 16V DC except for A42 0 9 16V DC 63H High pressure switch VFG TEST POINT Voltage between right pins of PC5C Power supply for out door controller circuit board 208V 230V AC to 9 and PCSD 3 Power supply for indoor and pin 4 and outdoor unit con Same as nection wire CNF1 208 230V AC Vsp CNS TEST POINT G S1 S2 A208 230V AC Voltage between pins of C5A C5B DC OV when stopped DC 1 6 5V CNF1 CNF2 CNDC when operated Connect to the fan motor 280V DC O 280V DC Outdoor power circuit Communication power supply 15V DC board D71 Voltage 15V DC When stopped 7 5V DC When operated 0V 15V pulse CNF2 is only for A42 64 Outdoor noise filter circuit board PUZ A18NHA4 PUZ A18NHA4 BS PUY A12 18NHA4 PUY A12 18NHA4 BS LI NI Voltage of 208 230V AC is input
104. aintenance mode appears on the screen at 2 Press the CHECK button for 3 seconds to switch to Maintenance monitor Note Itis not possible to switch to Maintenance monitor during data request in maintenance mode i e while is blinking since no buttons are operative Operating the service inspection monitor appears on the screen at when Maintenance monitor is activated The display at now allows you to set a request code No 3 Press the TEMP buttons and to select the desired refrigerant address Screen 8 D gt DI 4 4 5 4 Press the CLOCK buttons and A to set desired request code No 5 Press the FILTER button to perform data request The requested data will be displayed at in the same way as in maintenance mode Data collected during operation of the remote controller will be displayed The collected data such as temperature data will not be updated automatically even if the data changes To display the updated data carry out step 4 again Canceling the Monitoring the operation data 6 While Maintenance monitor is displayed press the CHECK button for 3 seconds to return to maintenance mode 7 To return to normal mode press the ON OFF button 96 13 2 REQUEST CODE LIST Certain indoor outdoor combinations do not have the request code function therefore no request codes are disp
105. all output phase become OFF When the switch is turned on 700 pulse closing valve signal will be sent till it goes to amp point in order to define the valve position The pulse signal is being sent for about 20 seconds 2 Linear expansion valve operation When the valve moves smoothly there is no sound or vibration occurring from the linear expansion valve however when the pulse number moves from to amp or when the valve is locked Pd sound can be heard than normal situation No sound is heard when the pulse number moves from to in case coil is burn out or motor is locked by open phase Sound can be detected by placing the ear against the screw driv er handle while putting the screw driver to the linear expansion valve Valve position capacity 500 pulse Opening a valve all the way Pulse number Extra tightening about 32 pulse 59 3 How to attach and detach the coil of linear expansion valve A12 18 lt Composition gt Linear expansion valve is separable into the main body and the coil as shown in the diagram below Coil Main body Z N Lead wire Stopper How to detach the coil Hold the lower part of the main body shown as A firmly so that 1 the main body does not move and detach the coil by pulling it upward Be sure to detach the coil holding main body firmly Otherwise pipes can bend due to pressure A lt How to attach t
106. alues among terminals on linear expansion valve using a tester 3 blinking Abnormality of outdoor fan motor rotational speed Check the outdoor fan motor 4 blinking Compressor overcurrent breaking Start up locked Compressor overcurrent breaking Abnormality of current sensor P B Abnormality of power module Check if stop valves are open Check looseness disconnection and converse connection of compressor wiring GMeasure resistance values among terminals on compressor using a tester Check if outdoor unit has a short cycle on its air duct 5 blinking Open short of discharge thermistor TH4 Open short of outdoor thermistors TH3 TH6 TH7 and TH8 Check if connectors TH3 TH4 TH6 and TH7 on outdoor controller board and conn ector CN3 on outdoor power board are not disconnected Measure resistance value of outdoor thermistors 6 blinking Abnormality of heatsink temperature Check if indoor outdoor units have a short cycle on their air ducts Measure resistance value of outdoor heatsink thermistor TH8 7 blinking Abnormality of voltage Check looseness disconnection and converse connection of compressor wiring Measure resistance value among terminals on compressor using a tester GCheck the continuity of contactor 52C Check if power supply voltage decreases GCheck the wiring of CN52C Check the wiring of CNAF 1 blinking Abnormality of r
107. and cord cover See Photo 2 5 Remove the back panel See Photo 1 6 Remove the electrical parts box See Photo 5 7 Remove 3 separator fixing screws 4 x 10 and remove the separator 8 Remove the thermistor lt shell gt TH32 Refer to step 6 9 Recover refrigerant 10 Remove 3 compressor fixing nuts by using spanner or adjustable wrench 11 Remove the welded pipe of motor for compressor inlet and outlet Note Recover refrigerant without spreading it in the air Photo 13 Compressor MC Separator fixing screw Compressor fixing nuts 13 Removing the accumulator 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the conduit cover and cord cover See Photo 2 5 Remove the back panel See Photo 1 6 Remove the electrical parts box See Photo 5 7 Recover refrigerant 8 Remove 2 welded pipes of accumulator inlet and outlet 9 Remove 2 accumulator leg fixing screws 4 x 10 10 Remove the accumulator together with the receiver leg Note Recover refrigerant without spreading it in the air Photo 14 Outlet Accumulator leg Accumulator leg fixing screw 110 PUZ A24 30 36NHA4 BS PUY A24 30 36NHA4 BS OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel Top panel fixing screws 1 Remove 3 service panel fixing s
108. ard defrosting control For high humidit Meaning of Function setting Mode02 indoor temperature detecting 0 Indoor temperature ta REMOTE MAN MAIN N N o1 Average data of the sensor on all the indoor units No2 Data of the sensor on the indoor unit that connected with remote controller No3 Data of the sensor on main remote controller 88 2 Functions available when setting the unit number to 01 03 or AL 07 in case of wireless remote controller When setting functions for an indoor unit in an independent system set the unit number to 01 referring to setting the indoor unit number When setting functions for a simultaneous twin indoor unit system set the unit number to 01 to 03 for each indoor unit in case of selecting different functions for each unit referring to setting the indoor unit number When setting the same functions for an entire simultaneous Twin indoor unit system set refrigerant address to AL 07 in case of wireless remote controller referring to setting the indoor unit number Function Filter sign 100h 07 2500h 107 Clean the filter indicator is not displayed Air flow Fan speed Settings Setting Wired remote controller No RF thermistor Initial setting Factory setting Not available 4 Way cassette Ceiling suspended Wall mounted PLA BA PCA KA PKA HA L PKA KA L Qu
109. asic example Min 100mm lt 3 15 16 gt as long as no obstacle is placed on the rear and light and left sides of the unit Min 100mm lt 3 15 16 gt 2 1 Min 500mm lt 19 11 16 gt Min 100mm lt 3 15 16 gt 2 sides should be open in the right left and rear side Minimum installation space for outdoor unit Min 350mm lt 13 25 32 gt FOUNDATION BOLTS Please secure the unit firmly with 4 foundation M10 lt W3 8 gt bolts Bolts washers and nut must be purchased locally Foundation bolt height ER FOUNDATION RERE E LE 18mm lt 23 32 gt Max PIPING WIRING DIRECTION Piping and wiring connection can be made from the rear direction only 1 In the place where short cycle tends to occur cooling and heating capacity and power consumption might get lowered 10 Air outlet guide optional PAC SG58SG E will help them improve 2 If air discharges to the wall the surface might get stained 13 mm lt inch gt Uni PUZ A24 30 36NHA4 BS PUY A24 30 36NHA4 BS PUZ A24 30 36NHA4 PUY A24 30 36NHA4
110. board to OFF ON Heating Set the shorting pins of emergency operation connector CN31 on outdoor controller PUZ only board to OFF Set SW4 2 on outdoor controller board as shown in the right 1 2 Cooling If shorting pins are not set on emergency operation connector CN31 the setting remains OFF 62 5 Operation data during emergency operation During emergency operation no communication is performed with the indoor unit so the data items needed for operation are set to the following values Operation data Operation mode COOL HEAT Remarks Intake temperature TH1 27C 81 F 20 5 C 69 F Indoor fluid pipe temperature TH2 5C 41 F 45 113 F Indoor 2 phase pipe temperature TH5 5C 41 F DOC 122 F Set temperature 25 C 77 F 22 C 72 F Outdoor fluid pipe temperature TH3 45 C 113 F BC 41 F Outdoor 2 phase pipe temperature TH6 50 C 122 F BC 41 F Outdoor air temperature TH7 35C 95 F ZC 45 F Temperature difference code intake temperature set temperature ATj 5 5 Discharge super heat SHd 30degC 54degF 30degC 54degF Sub cool SC 5degC 9degF 5degC 9degF 1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data When the unit enters emergency operation and TH values are mismatched set the th
111. by turns Example When 2450 hours 245 x 10 hours 0 5 secs 0 5secs 12 245 gt 2 secs Compressor operating current 0 50 0 50 Omit the figures after the decimal fractions Compressor operating frequency 0 255 0 255 When it is 100Hz or more hundreds digit tens digit and ones digit are displayed by turns Example When 125Hz 0 5 secs 0 5secs J gt 25 gt 2 secs LEV A opening pulse 0 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 150 pulse 0 5 secs 0 5secs J1 gt 50 gt 2 secs Error postponement code history 1 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Operation mode on error occurring 77 Operation mode of when operation stops due to error is displayed by setting SW2 as below SW2 123456 Code display SW2 setting Display detail The black square indicates a switch position Explanation for display Pipe temperature Liquid TH3 on error occurring 40 194 40 194 40 90 C When the coil thermistor detects 0 F or below
112. cannot be limited when the set temperature range has not changed To increase or decrease the temperature press the rw or A button To switch the upper limit setting and the lower limit setting press the 5 4 button The selected setting will flash and the temperature can be set Settable range Cooling Dry mode Lower limit 19 30 C 67 F 87 F Upper limit 30 C 19 C 87 F 67 F Heating mode Lower limit 17 28 63 F 83 F Upper limit 28 C 17 C 83 F 63 F Automatic mode Lower limit 19 28 C 67 F 83 F Upper limit 28 C 19 C 83 F 67 F 93 4 3 Mode selection setting 1 Remote controller main sub setting To switch the setting press the ON OFF button Main The controller will be the main controller Sub The controller will be the sub controller 2 Use of clock setting To switch the setting press the C ON OFF button ON The clock function can be used OFF The clock function cannot be used 3 Timer function setting To switch the setting press the ON OFF button Choose one of the followings WEEKLY TIMER initial setting The weekly timer can be used AUTO OFF TIMER The auto off timer can be used amp SIMPLE TIMER The simple timer can be used TIMER MODE OFF The timer mode cannot be used When the use of clock setting is OFF the WEEKLY TIMER cannot be used 4 Contact number setting
113. crews 5 x 12 and slide Figure gaz 9P panel the hook on the right downward to remove the service panel 2 Remove screws 3 for front 3 for rear 5 x 12 of the top panel and remove it Slide Service panel Fan grille Service panel fixing screws Cover panel Grille fixing screws 2 Removing the fan motor MF 1 Photo 1 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 E 3 Remove 5 fan grille fixing screws 5 x 12 to detach the fan grille See Figure 1 4 Remove a nut for right handed screw of M6 to detach the propeller See Photo 1 5 Disconnect the connector CNF1 on controller circuit board in electrical parts box Nut d 6 Remove 4 fan motor fixing screws 5 x 25 to detach the fan motor See Photo 2 Front panel Photo 2 Propeller Fan X Fan motor fixing screws motor Front panel fixing screws Fan motor fixing screws 3 Removing the electrical parts box Photo 3 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 Controller circuit board 3 Disconnect the indoor outdoor connecting wire from termi C B nal block 4 Remove all the following connectors from controller circuit board fan motor linear expansion valve thermistor lt Outdoor pipe gt thermistor lt Shell gt thermistor lt Outdoor 2 phase pipe thermistor lt Outdoor gt high pressure switch 4 way valve and bypass valve T
114. cting wire from terminal block 5 Remove all the following connectors from controller circuit board fan motor linear expansion valve thermistor lt Outdoor pipe gt thermistor lt Shell gt thermistor lt Outdoor 2 phase pipe gt thermistor lt Outdoor gt high pressure switch four way valve and bypass valve Pull out the disconnected wire from the electrical parts box lt Diagram symbol in the connector housing gt Fan motor CNF1 Linear expansion valve LEV A Thermistor Outdoor pipe TH3 Thermistor Shell TH32 Thermistor Outdoor 2 phase pipe Outdoor TH6 7 High pressure switch 63H 6 Remove the terminal cover and disconnect the compressor lead wire 7 Remove the electrical parts box fixing screws 1 from the front the right and the rear side and detach the electrical parts box by pulling it upward Photo 5 Electrical parts box Controller circuit board C B Electrical parts box fixing screws Terminal block TB1 Note Replace the thermistor Outdoor 2 phase pipe TH6 Removing the thermistor Outdoor 2 phase pipe TH6 and thermistor Outdoor pipe TH3 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the conduit cover and cord cover 5 Remove the back panel fixing screws 4 from the right and 3 from the rear side and detach the back panel See Photo 1 6
115. ctivate maintenance mode during the test run 97 2 8 We Request content Descnpilon Unit Remarks 2 Display range 50 Indoor unit Control state Refer to 13 2 1 Detail Contents in Request Code 51 Outdoor unit Control state Refer to 13 2 1 Detail Contents in Request Code 52 Compressor Frequency control state Refer to 13 2 1 Detail Contents in Request Code 53 Outdoor unit Fan control state Refer to 13 2 1 Detail Contents in Request Code 54 Actuator output state Refer to 13 2 1 Detail Contents in Request Code 55 Error content U9 Refer to 13 2 1 Detail Contents in Request Code 56 57 58 59 60 Signal transmission demand capacity 0 255 61 Contact demand capacity Refer to 13 2 1 Detail Contents in Request Code 62 External input state silent mode etc Refer to 13 2 1 Detail Contents in Request Code 63 64 65 66 67 68 69 70 Outdoor unit Capacity setting display Refer to 13 2 1 Detail Contents in Request Code 71 Outdoor unit Setting information Refer to 13 2 1 Detail Contents in Request Code 72 73 Outdoor unit SW1 setting information Refer to 13 2 1 Detail Contents in Request Code 74 Outdoor unit SW2 setting information Refer to 13 2 1 Detail Contents in Request Code 75 76
116. d G Check CN52C wiring Replace outdoor power circuit board A12 18 24N only Replace ACT module A30 36 42N only Replace outdoor power circuit board A30 36 42N only Check CNAF wiring A30 36 42N only Replace outdoor noise filter circuit board Check CN5 wiring on the outdoor power circuit board Refer to 10 9 Check CN2 wiring on the outdoor power circuit board Refer to 10 9 UF 4100 Compressor overcurrent interruption When compressor locked Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating Stop valve is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 10 9 Outdoor power circuit board Check compressor Refer to 10 6 Replace outdoor power circuit board Current sensor error Abnormal if current sensor detects 1 5A to 1 5A during compressor operation This error is ignored in case of test run mode X This error is ignored in case of test run mode e Its abnormal for 38A the input current or 10 seconds continuous 34A or more Disconnection of compressor wiring Defective circuit of current sensor on outdoor power circuit board
117. d connections and incorrect polarity Measure impedance between the ground and the power supply terminal block L1 L2 on the outdoor unit by 500V Megger and check that it is 1 0MQ or over Do not use 500V Megger to indoor outdoor connecting wire terminal block S1 S2 S3 and remote controller terminal block 1 2 This may cause malfunction Make sure that test run switch SW4 is set to OFF before turning on power supply Turn on power supply 12 hours before test run in order to protect compressor For specific models which requires higher ceiling settings or auto recovery feature from power failure make proper changes of settings referring to the description of 12 FUNCTION SETTING Make sure to read operation manual before test run Especially items to secure safety 28 i While the t ture displa th t TEST RUN and the currently selected Operating procedures ds UE De CE controller is PLEASE WAIT the remote controller is disabled Wait until PLEASE WAIT disappears before using remote controller Turn on the main power supply PLEASE WAIT appears for about 2 minutes after power supply is turned on 1 operation mode are displayed alternately Displays the remaining test run time Press TES
118. d valve coil lt Bypass valve gt SV For A24 36 only Measure the resistance between the terminals with a tester At the ambient temperature 20 C 68 F Abnormal Open or short Normal 1450241509 55 Check method of DC fan motor fan motor outdoor controller circuit board Notes High voltage is applied to the connecter CNF1 2 for the fan motor Pay attention to the service Do not pull out the connector CNF1 2 for the motor with the power supply on It causes trouble of the outdoor controller circuit board and fan motor Self check Symptom The outdoor fan cannot turn around Fuse check Check the fuse F5 on outdoor controller board lt Did the fuse blow Yes gt C V Wiring contact check Contact of fan motor connector CNF1 2 Replace outdoor controller board C B and fan motor MET 2 lt Is there contact failure Yes gt V Power supply check Remove the connector CNF1 2 Measure the voltage in the outdoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc DC250 330V TEST POINT Vcc between 5 and 4 of the fan connector DC15V Is the voltage normal 2 Yes gt C Replace the fan motor 3 V V Yes OK Check the operation of fan END Replace outdoor controller board NG
119. ddress changes to a separate setting Diagnose remote controller a When RC is displayed remote con trollers have no problem Turn the power off and on again to check When becoming abnormal again replace indoor controller board b When RC NG is displayed replace remote controller c When RC E3 or ERC 00 66 is displayed noise may be causing abnormality Error Code Abnormal point and detection method Judgment and action Indoor outdoor unit communication error Signal receiving error Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on Abnormal if indoor controller board could not receive any signal normally for 3 minutes G Consider the unit as abnormal under the following condition When 2 or more indoor units are connected to an out door unit indoor controller board could not receive a signal for 3 minutes from outdoor controller circuit board a signal which allows outdoor controller circuit board to transmit signals Contact failure short circuit or miswiring converse wiring of indoor outdoor unit connecting wire Defective transmitting receiv ing circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board Noise has entered into indoor outdoor unit connecting wire Defective fan motor Defective rush current resistor x Check
120. dy The up down vane will return to the setting specified by the remote controller when STANDBY is released DEFROST is displayed on the screen No air comes out of the unit The outdoor unit gets frosted when the outside temperature is low and the humidity is high DEFROST indicates the DEFROST operation is being performed to melt this frost The DEFROST operation ends in around 10 minutes at most 15 minutes During the DEFROST operation the indoor unit s heat exchanger becomes cold so the blower is stopped The up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body The display will turn into STANDBY when DEFROST operation ends Phone Calls From Customers How to Respond The room cannot be cooled or heated sufficiently Check the set temperature of remote controller The outdoor unit cannot be operated if the set temperature is not appropriate The outdoor unit operates in the following modes COOL When the set temperature is lower than the room temperature HEAT When the set temperature is higher than the room temperature Check if filters are not dirty and clogged If filters are clogged the airflow amount will be reduced and the unit capacity will be lowered See the instruction manual that came with the product for how to clean the filters Check there is enough space around the air
121. e press the button ae oan Alternating Display Na 3E ERRQR GODE E site nn E e LILI Error code 2 or 4 digits Address 3 digits or unit number 2 digits When using remote local controller combined operation cancel the error code after turning off remote operation During central control by a MELANS controller cancel the error code by pressing the D ON OFF button 10 3 2 Self Diagnosis During Maintenance or Service Since each unit has a function that stores error codes the latest check code can be recalled even if it is cancelled by the remote controller or power is shut off Check the error code history for each unit using the remote controller Set the unit number or refrigerant address you want to diagnose Switch to self diagnosis mode Press the TEMP buttons Cv and CAD to select the desired number Press the CHECK button twice within seconds The display content or address The number address changes between 01 and 50 or 00 will change as shown below and 15 E e SELF CHECK 29 nn nn LILI LILI e The refrigerant address will begin to blink Unit number or refrigerant address approximately 3 seconds after being to be diagnosed selected and the self diagnosis process will begin 9 Display self diagnosis results When there is error code history For the definition
122. e ester oil ether oil or alkylbenzene oil in a small amount If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Charge refrigerant from liquid phase of gas cylinder If the refrigerant is charged from gas phase composition change may occur in refrigerant and the efficiency will be lowered Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released 1 Cautions for service 1 Perform service after recovering the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 When performing service install a filter drier simultaneously Be sure to use a filter drier for new refrigerant 2 Additional refrigerant charge When charging directly from cylinder Check that cylinder for R410A on the market is syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase 3 Service tools Use the below service too
123. e memory of the remote controller control board Error code E1 Abnormal if the clock function of remote controller cannot be normally operated Error code E2 Defective remote controller Replace remote controller Remote controller transmission error E3 signal receiving error E5 D Abnormal if remote controller could not find blank of transmission path for 6 sec onds and could not transmit Error code E3 Remote controller receives transmitted data at the same time compares the data and when detecting it judges different data to be abnormal 30 continuous times Error code E3 Abnormal if indoor controller board could not find blank of transmission path Error code E5 Indoor controller board receives trans mitted data at the same time compares the data and when detecting it judges different data to be abnormal 30 continuous times Error code E5 2 remote controller set as main In case of 2 remote con trollers Remote controller is connected with 2 indoor units or more Repetition of refrigerant address Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board Noise has entered into trans mission wire of remote control ler 40 Set a remote controller to main and the other to sub Remote controller is connected with only one indoor unit The a
124. e set up D Set the operation mode cooling heating using SW4 2 lt SW4 gt Turn SWA 1 to start test run with the operation mode set by SW4 2 Turn off SWA 1 to finish the test run n There may be a faint knocking sound around the machine room after power is supplied but this is or B not a problem with the product because the linear expansion valve is just moving to adjust opening pulse 1 2 There may be a knocking sound around the machine room for several seconds after compressor starts operating But this is a problem with product because the check valve itself generates Stop operation the sound because pressure difference is small in the refrigerant circuit Cooling Heating PUZ only Note The operation mode cannot be changed by SW4 2 during test run To change test run mode stop the unit by SW4 1 change the operation mode and restart the test run by SW4 1 27 10 TROUBLESHOOTING 10 1 TROUBLESHOOTING Error code display by self diagnosis and actions to be taken for service summary gt Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit Actions to be taken for service which depends on whether or not the trouble is reoccurring at service are summarized in the table below Check the contents below before investigating details Unit conditions at service Error code Actio
125. e solenoid coil gt Stop valve High pressure Service Heating ON with service port protect switch port check e 4 way valve Cooling OFF DN heat exchanger 50 Refrigerant GAS pipe Strainer a zi Thermistor 12 711 41 2 Te SY ir TH6 NIE Muffler li ums Thermistor i thermistor TH3 i EX TH32 Accumulator d 8 Distributor 100 100 Refrigerant flow in cooling ompressor 100 100 reeves Refrigerant LIQUID pipe P HD o gt Refrigerant flow in heating 6 35mm f1 4 5 Stop valve Linear expansion valve PUZ A24NHA4 BS PUZ A30NHA4 BS PUZ A36NHA4 BS Bypass valve Service High pressure port protect switch Ball valve 4 way valve check Outdoor heat exchanger 50 Refrigerant GAS pipe Strainer aA Thermistor 15 88mn d5 8 gt TH6 x Thermistor Senee 44 TH3 po Thermistor check ille rH32 Distributor Accumulator Refrigerant flow in cooling Compressor 100 Ai T Refrigerant flow in heating Refrigerant LIQUID pipe Strainer Strainer 9 52m 23 8 C Gi Stop valve Linear expansion valve with service port
126. e unit and then remove the right side panel 8 Recover refrigerant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 receiver leg fixing screws 4 x 10 Note Recover refrigerant without spreading it in the air Accumulator leg fixing screws al d Y Wl l f Wi Outlet VK g 115 PUZ A42NHA4 BS PUY A42NHA4 BS OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel Top panel fixing screws T 1 Remove 3 service panel fixing screws 5 x 12 and slide SR nw N IUIS the hook on the right downward to remove the service Service panel panel 2 Remove screws 3 for front 3 for rear 5 x 12 of the top Grille fixing panel and remove it Screws Fan grille L3 Grille fixing 4 SUN Service panel fixing screws E a 2 Removing the fan motor MF1 MF2 Photo 1 Front panel Photo 2 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 5 fan grille fixing screws 5 x 12 to detach the fan grille See Figure 1 4 Remove a nut for right handed screw of M6 to detach the propeller See Photo 1 5 Disconnect the connectors CNF1 CNF2 on controller circuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 25 to detach the fan motor See Photo 2 Propeller Fan motor fixing screws Fan Fan mo
127. ective If there was no trouble with above in dif ferent refrigerant system 2 or more outdoor units judge with amp If address of abnormality source is the address that should not exist there is the unit that memorizes nonexistent address information Delete useless address informa tion with manual setting function of remote controller Only the system FRESH MASTER or LOSSNAY are connected to or the system that is equipped with group setting of differ ent refrigerant system If there was no trouble with above replace the controller board of displayed address or attribute If the unit does not return to normal multi con troller board of outdoor unit may be defective repeater circuit Replace multi controller board one by one to check if the unit returns to normal Continued to the next page From the previous page Error Code Abnormal point and detection method Case Judgment and action 4 If displayed address or attribute is remote controller Indoor unit detects abnormality when indoor unit transmitted to remote control ler and there was no reply ACK During group operation with indoor unit of multi refrigerant system if indoor unit transmit to remote controller while out door unit power supply of one refrigerant system is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of remote controller or indoor unit
128. ed when transmission from the units of same address is detected Note The address and attribute displayed at remote controller indicate the con troller that detected abnormality There are 2 or more same address of controller of out door unit indoor unit FRESH MASTER or LOSSNAY Noise has entered into trans mission signal and signal was transformed ty th Search the unit with same address as abnormali occurred If the same address is found turn off e power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more after the address is corrected and turn the power on again Check transmission waveform or noise on transmission wire Hardware error of transmission processor Transmission processor intended to trans mit O but 1 appeared on transmission wire Note The address and attribute display at remote controller indicate the con troller that detected abnormality D Error is detected if waveform is transformed when wiring works of transmission wire of outdoor unit indoor unit FRESH MASTER or LOSSNAY are done or polarity is changed with the power on and transmission data collide each other Defective transmitting receiving circuit of transmission processor 9 Transmission data is changed by the noise on transmission If the works of transmission wire is done with the power on turn off the power supply of outdoor unit
129. efrigerants vacuum valve gerant to thermistor vacuum gauge Charging cylinder Refrigerant charge Tool exclusive for R410A X Prepare a new tool Use the new tool as the tool exclusive for R410A Tools for other refrigerants can be used under certain conditions Tools for other refrigerants can be used 3 FEATURES Sm QE Dan Dan CD ti Daun oy CD a Sha PUZ A18NHA4 PUZ A18NHA4 BS PUY A12 18NHA4 PUY A12 18NHA4 BS CHARGELESS SYSTEM V ERN X N PUZ A24 30 36NHA4 PUZ A24 30 36NHA4 BS PUY A24 30 36NHA4 PUY A24 30 36NHA4 BS PUZ A42NHA4 PUZ A42NHA4 BS PUY A42NHA4 PUY A42NHA4 BS PRE CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT Max 100ft 30m A42 Max 70ft 20m A12 36 The refrigerant circuit with LEV Linear Expansion Valve and accumulator always control the optimal refrigerant level regardless of the length 42 100ft 30m max 12 36 7Oft 20m max and 16ft 5m of piping The additional refrigerant charging work during installation often causes problems It is completely eliminated by chargeless system This unique system improves the quality and reliability o
130. el See Photo 1 3 Remove the front panel See Photo 1 4 Remove the back panel See Photo 1 5 Remove the electrical parts box See Photo 5 6 Remove the sound proof cover upper for compressor 6 Pull out the thermistor lt Shell gt TH32 from the holder of the compressor shell Photo 8 Sound proof cover 7 Removing the 4 way valve coil 2154 Photo 9 and linear expansion valve coil LEV A 1 Remove the service panel See Photo 1 4 way valve coil 4 way valve 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the conduit cover and cord cover 5 Remove the back panel See Photo 1 6 Remove the electrical parts box See Photo 5 Removing the Away valve coil 2154 7 Remove 1 4 way valve coil fixing screw M4 x 6 8 Remove the 4 way valve coil by sliding the coil to the right Removing the linear expansion valve coil LEV A 9 Remove the linear expansion valve coil by sliding the coil upward fixing screw Linear expansion valve 4 way valve coil 2154 Linear expansion valve coil LEV A 108 OPERATING PROCEDURE PHOTOS 8 Removing the 4 way valve 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the conduit cover and cord cover See Photo 2 5 Remove the back panel See Photo 1 6
131. enser evaporator gt thermistor Defective refrigerant circuit Converse connection of extension pipe on plural units connection G Converse wiring of indoor outdoor unit connecting wire on plural units connection Defective detection of indoor room temperature and pipe lt condenser evaporator gt temperature thermistor Stop valve is not opened completely Note Indoor unit i Case In Temperature display of indoor liquid pipe Check pipe liquid or condenser evaporator temperature with room temperature display on remote controller and outdoor controller circuit board setting SW2 of outdoor controller circuit controller circuit board after connecting door 1 evaporator pipe Indoor 1 Pipe liquid or condenser evaporator gt temperature display is indicated by board as follows Conduct temperature check with outdoor A Control Service Tool PAC SK52ST Temperature display of indoor condenser A 9 35 1 2 3 4 5 6 ON OFF In Temperature display of indoor liquid pipe Temperature display of indoor con door 2 evaporator pipe Indoor 2 1 2 3 4 5 6 ON OFF A Control Service Tool SW2 setting Check converse connection of extension pipe or converse wiring of indoor outdoor unit connecting wire n the text indicates M NET board in outdoor unit Judgment and action Address duplicate definition This error is display
132. er Supply Indoor Outdoor gt PFC Converter LED1 LED2 LED lt Operation Inspection Indicators MC Motor for Compressor IPM Power Module F1 F4 Fuse lt T6 3AL250V gt MF1 Fan Motor CB1 CB3 Main Smoothing Capacitor SWP Switch Pump Down 2184 Solenoid Valve Four Way Valve N F Noise Filter Circuit Board CN31 Connector lt Emergency Operation gt 63H High Pressure Switch LI LO Connection Terminal lt L1 Phase gt SS Connector Connection for Option SV Solenoid Valve Bypass Valve NI NO Connection Terminal lt L2 Phase gt CNM Connector lt A Control Service Inspection Kit gt TH3 Thermistor lt Outdoor Pipe gt 2 Connection Terminal lt Ground gt CNMNT Connector TH6 Thermistor lt Outdoor 2 Phase Pipe gt 52C 52C Relay Connected to Optional M NET Adapter Board TH7 Thermistor lt Outdoor gt Controller Circuit Board CNVMNT Connector TH8 Thermistor lt Heatsink gt SWI Switch lt Forced Defrost Defect History lt Connected to Optional M NET Adapter Board gt TH32 Thermistor lt Shell gt Record Reset Refrigerant Address gt CNDM Connector lt Connected for Option Contact Input gt LEV A Electronic Expansion Valve SW4 Switch lt Test Operation gt CN51 Connector lt Connected for Option Signal output gt ACL Reactor SW5 Switch lt Function Switch gt X51 X52 X55 Relay CY1 CY2 Capacitor SW6 Switch lt Model Select gt P B Power Circuit Board SW7 Switch lt Function Setup gt TABR S Connection Terminal lt L1 L2 Phase gt Swe Switch lt Func
133. ermistors to open short And the unit runs emergency operation with the values listed above X2 If one thermistor is set to open short the values of SHd SC will be different from the list above Example When liquid temperature thermistor TH3 has an open or short circuit Thermistor COOL HEAT TH3 45 113 F 5C 41 F Ta Tb TH6 Regard normal figure as effective data Tc Td Regard normal figure as effective data BC 41 F 50 C 122 F 5C 41 F Discharge superheat SHd Cooling TH4 TH6 Tc Ta Heating TH4 TH5 Td 50 C or 122 F Degree of subcooling SC Cooling TH6 TH3 Ta 45 C or 113 F Heating TH5 TH2 50 C 45 5 degC or 122 F 113 F 9 degF 45C 113 F 63 10 9 TEST POINT DIAGRAM lt CAUTION gt TEST POINTO is high voltage Outdoor controller circuit board PUZ A18 24 30 36 42NHA4 PUZ A18 24 30 36 42NHA4 BS PUY A12 18 24 30 36 42NHA4 PUY A12 18 24 30 36 42NHA4 BS SW7 SW1 51 Demand control setting Forced defrost detect history record reset refrigerant address External signal output Compressor operatin SW6 signal p 5 Model select Abnormal signal SWA Test operation A pm to SWP Input of low level Pump down oa mode 9 SW5 T L Input of external con Function switch Ta eaa kd 7 2 Ld tact point SW8 CN52C
134. ess 00 address 00 Outdoor unit Indoor unit 01 Outdoor unit Indoor unit 01 Remote controller Indoor unit 02 Remote controller Multi refrigerant system group control Up to 16 refrigerant systems 16 outdoor units can be con nected as a group by one remote controller To check or set the refrigerant addresses Refrigerant address 00 Outdoor unit Indoor unit 01 Remote controller Refrigerant address 01 Outdoor unit Indoor unit 01 Refrigerant address 02 Outdoor unit Indoor unit 01 Refrigerant address 15 Outdoor unit Indoor unit 01 86 11 2 GUIDE FOR OPERATION CONDITION aa ae een ee Check Points 5 Good Retightened E h diff b 0 9 andi 8 9 S Terminal block Outdoor Unit Good Retightened ms ifferences between an into 2 9 8 Indoor Unit Good Retightened e grap given COW 5 4 Operation state is determined according to the plotted areas on 8 Insulation resistance MQ Voltage V the graph EIN z For data measurements set the fan speed to Hi before activat C Accumulated operating time Time T om Number of ON OFF times Times ing maintenance mode pressor Current A Classification o Refrigerant heat exchanger temperature COOL F HEAT Inspection Is 000 di
135. et this mode Refer to OPERATION MANUAL of Optional Parts Panel for details on operation Fixed air flow direction mode Not necessary to set this mode Refer to OPERATION MANUAL of indoor unit for details on operation Mode The remote controller will be the main controller Initial setting value selection The remote controller will be the sub controller The clock function can be used Initial setting value 1 The clock function cannot be used 1 4 Weekly timer can be used Initial setting value MH One of the description OFF 1 Auto off timer can be used marked on the right j Simple timer can be used will be 0 IMER displayed perd 1 IMER 008 Timer mode cannot be used i 1 g i The set contact numbers are not displayed in case of error Initial setting value Di The set contact numbers displayed in case of error Oras Display F The temperature unit F is used Initial setting value mode setting ________ The temperature unit C is used Room air temperature is displayed Initial setting value Room air temperature is not displayed opt One of Automatic cooling and Automatic heating is displayed DISP H No bei under the automatic mode is running Initial setting value Only Automatic is displayed under the automatic mode 12 3 Function selection of wireless remote c
136. f the air conditioner are actuated What is error code Refer to SELF DIAGNOSIS ACTION TABLE Check if servicing is required for the error Remote controller PLEASE WAIT is displayed on the screen Wait around 2 minutes An automatic startup test will be conducted for 2 minutes when power is supplied to the air conditioner PLEASE WAIT will be kept being displayed while that time Q FILTER is displayed on the screen This indicates that it is time to clean the air filters Clean the air filters Press the FILTER button on the remote controller twice to clear FILTER from the display See the operation manual that came with the product for how to clean the filters Display time of FILTER depends on the model Long life filter 2500 hrs Standard filter 100 hrs STANDBY is displayed on the Screen This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and returns to HEAT operation The display will automatically disappear around 10 minutes later While STANDBY is displayed on the remote controller the airflow amount will be restricted because the indoor unit s heat exchanger is not fully heated up In addition to that the up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human bo
137. f the work done It also helps to speed up the installation time SPECIFICATIONS Service Ref PUZ A18NHA4 PUZ A18NHA4 BS PUZ A24NHA4 PUZ A24NHA4 BS PUZ A30NHA4 PUZ A30NHA4 BS PUZ A36NHA4 PUZ A36NHA4 BS PUZ A42NHA4 PUZ A42NHA4 BS Power supply Phase Single Cycle Voltage 60Hz 208 230V MCA 25 MOCP 40 Breaker size 30 External finish Munsell 3Y 7 8 1 1 Heat exchanger Plate fin coil Defrost method Reverse cycle Crankcase heater Compressor Hermetic Model SNB130FQCM1 TNB220FLHM TNB220FLHM TNB220FLHM ANV33FDPMT Motor output 0 9 1 3 1 3 R L A 12 12 12 L R A 14 14 17 5 Starter type Inverter Fan drive x No Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 2 Fan motor output 0 040 0 075 0 075 0 075 0 086 0 086 Fan motor 0 35 0 75 0 75 0 75 0 40 0 40 Airflow 34 55 55 55 100 1200 1940 1940 1940 3530 Sound level Cooling 48 48 48 48 Heating 47 50 50 50 Protection devi HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch LP switch Discharge thermo Dimension 800 950 95
138. g Cancellation of postponement 00 is displayed in case of no postponement Code display Error code history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns Code display Error thermistor display When there is no error thermistor is displayed 3 Outdoor pipe temperature Liquid TH3 6 Outdoor pipe temperature 2 phase TH6 7 Outdoor outside temperature TH7 8 Outdoor heatsink TH8 Code display Operation frequency on error occurring 0 255 0 255 When it is 100Hz or more hundreds digit tens digit and ones digit are displayed by turns Example When 125Hz 0 5 secs 0 5 secs 2 secs 1 gt 25 gt Fan step on error occurring 0 10 81 SW2 setting Display detail The black square indicates a switch position Explanation for display LEV A opening pulse on error occurring 0 480 0 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 130 pulse 0 5 secs 0 5 secs 2 secs 1 30 gt Indoor room temperature TH1 on error occurring 46 102 46 102 8 39 C Indoor pipe temperature Liquid TH2 on error occurring 38 190 38
139. h position SW2 setting Display detail Explanation for display Discharge superheat on error occurring 0 327 0 182degC SHd When the temperature is 100degF or more 0 327 hundreds digit tens digit and ones digit are displayed by turns Cooling TH4 or TH32 TH6 Example When 150degF 0 5 secs 0 5 secs 2 secs gt 50 gt Heating TH4 or TH32 TH5 0 234 0 130degC Sub cool on error occurring SC When the temperature is 100degF or more 0 234 hundreds digit tens digit and ones digit are displayed by turns Ee Example When 115degF Heating 5 2 0 5 secs 0 5 2 secs 15 gt Thermostat on time until error stops 0 999 0 999 When it is 100 minutes or more hundreds digit tens digit and ones digit are displayed by turns Example When 415 minutes 0 5 secs 0 5 secs 2 secs 4 315 gt U9 Error status during the Error Description Detection point Display postponement period Normal 00 Overvoltage error Power circuit board 01 Undervoltage error Controller circuit board 02 Input current sensor error L1 or L2 phase open error Abnormal power synchronous signal Power circuit board 08 PFC error A12 18 24NHA mra Code Power circuit board 10 displ Overvoltage Undervoltage Overcurrent ispla
140. h unit has abnormality in its thermistor by switching the mode of SW2 PAC SK52ST Refer to 10 10 Thermistors Disconnection or contact failure of connectors Outdoor controller circuit board TH3 TH6 TH7 Outdoor power circuit board CN3 Defective thermistor Defective outdoor controller circuit board Name D Check connection of connector TH3 TH6 TH7 on the outdoor controller circuit board Check connection of connector CN3 on the outdoor power circuit board Check breaking of the lead wire for thermistor TH3 TH6 TH7 TH8 Refer to 10 9 Check resistance value of thermistor TH3 TH6 TH7 TH8 or check temperature by microprocessor Thermistor TH3 TH6 TH7 TH8 Refer to 10 6 SW2 on A Control Service Tool Refer to 10 10 8 Replace outdoor controller circuit board Emergency operation is available in case of abnormalities of TH3 TH6 and TH7 Open detection Refer to 10 8 Short detection Thermistor Outdoor pipe 40 C 40 F or below 90 C 194 F or above Thermistor Outdoor 2 phase pipe 40 C 40 F or below 90 C 194 F or above Thermistor Outdoor 40 C 40 F or below 90 C 194 F or above Thermistor lt Heatsink gt 27C 17 F or below 102 C 216 F or above Temperature of heatsink Abnormal if heatsink thermistor TH8 detects temperature indicated below A12 18 42N 84 C 183 F A24
141. he coil gt ge Hold the lower part of the main body shown as A firmly so that DUST i the main body does not move and attach the coil by inserting it i Saa EE 3 downward into the main body Then securely attach the coil stop WE per to pipe B At this time be careful that stress is not added to 27 lead wire and main body is not wound by lead wire If the stop per is not firmly attached to pipe B coil may be detached from the main body and that can cause defective operation of linear expansion valve To prevent piping stress be sure to attach the coil holding the main body of linear expansion valve firmly Otherwise pipe may break Be sure to attach the stopper to pipe B 60 4 How to attach and detach the coil of linear expansion valve A24 30 36 42 lt Composition gt Linear expansion valve is separable into the main body and the coil as shown in the diagram below Stopper Main body Coil Lead wire lt How to detach the coil gt Hold the lower part of the main body shown as A firmly so that the main body does not move and detach the coil by pulling it upward Be sure to detach the coil holding main body firmly Otherwise pipes can bend due to pressure lt How to attach the coil gt Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop pe
142. he timer type 4 Contact number setting for error situation CALL Contact number display in case of error Setting the telephone number 4 Display change 1 Temperature display F setting TEMP MODE Setting the temperature unit C or F to display DISP MODE SETTING 2 Room air temperature display setting ROOM TEMP DISP SELECT Setting the use or non use of the display of indoor room air temperature 3 Automatic cooling heating display setting AUTO MODE DISP C H Setting the use or non use of the display of Cooling or Heating display during operation with automatic mode Function selection flowchart Refer to next page 1 Stop the air conditioner to start remote controller function selection mode gt 2 Select from item1 gt 3 Select from item2 gt 4 Make the setting Details are specified in item3 gt 5 Setting completed gt 6 Change the display to the normal one End Detailed setting 4 1 CHANGE LANGUAGE setting The language that appears on the dot display can be selected lt Press the MENU button to change the language Japanese JP English GB 9 German D Spanish E Russian RU G Italian 1 Chinese CH French F 4 2 Function limit 1 Operation function limit setting operation lock To switch the setting press the OON OFF button nol All operation buttons exce
143. hen remove a screw 4 x 8 from the valve bed to remove the lead wire Pull out the disconnected wire from the electrical parts box lt Diagram symbol in the connector housing gt Fan motor CNF1 Linear expansion valve LEV A Thermistor Outdoor pipe TH3 Thermistor Shell TH32 Thermistor Outdoor 2 phase pipe Outdoor TH6 7 High pressure switch 63H 4 way valve coil 2184 Bypass valve coil SV2 5 Remove the terminal cover and disconnect the compres sor lead wire Terminal block Electrical parts box Electrical parts 6 Remove an electrical parts box fixing screw 4 x 10 and UBI Ser detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right 111 OPERATING PROCEDURE PHOTOS 4 Removing the thermistor lt Outdoor 2 phase pipe gt TH6 Photo 4 1 Remove the service panel See Figure 1 Electrical Thermistor 2 Remove the top panel See Figure 1 Controller parts box lt Outdoor 2 phase pipe gt 3 Disconnect the connectors TH6 and TH7 red on the SES controller circuit board in the electrical parts box C B 4 Loosen the clamp for the lead wire in the rear of the electrical parts box 5 Pull out the thermistor lt Outdoor 2 phase pipe gt TH6 from the sensor holder Note In case of replacing thermistor lt Outdoor 2 phase pipe gt TH6 replace it together with
144. ided with this product Use a newly flared pipe Avoid using thin pipes If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Make sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle Use the following tools specifically designed for use with R410A refrigerant The following tools are necessary to use R410A refrigerant In addition use pipes with specified thickness Tools for RA10A Gauge manifold Flare tool Contamination inside refrigerant piping can cause deterio Charge hose Size adjustment gauge ration of refrigerant oil etc Gas leak detector Vacuum pump adaptor Torque wrench Electronic refrigerant Store the piping to be used indoors during charging scale installation and both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor The refrigerant oil applied to flare and flange connections must b
145. iet Standard High ceiling No of air outlets 4 directions 3 directions 2 directions Optional high efficiency filter Vane setting Not supported Supported No vanes Vane No 3 setting PLA only Vane No 1 setting Vane No 2 setting Optional humidifier PLA only Vane differential setting in heating mode cold wind prevention Not supported Supported No 1 setting TH5 24 28 No 2 setting Standard 5 28 32 No 3 setting TH5 32 38 Swing Set temperature in heating mode 4 deg up 1 Not available Swing JPLA BA Available Wave air flow Available Not available Fan speed when the heating thermostat is OFF Extra low Stop Keeping fan speed set by remote controller Fan speed when the cooling thermostat is OFF Detection of abnormality of the pipe temperature P8 Keeping fan speed set by remote controller Stop ALN A N n Oo gt gt V 28 Neglect 128 1 PKA HA L KA L 2degC 3 6DegF up Mode No 11 PLA BA PCA KA Vane No 3 setting No Vanes Less smudging Downward position than the standard No vane function Vane No 1 setting Standard Standard Vane No 2 setting Less draft Less draft
146. igure 1 3 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 5 Remove the 4 way valve coil See Photo 7 6 Recover refrigerant 7 Remove the welded part of 4 way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized 9 Removing linear expansion valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 5 Remove the linear expansion valve See Photo 7 6 Recover refrigerant 7 Remove the welded part of linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 250 F or more
147. in 5 blinking Serial communication error Communication between outdoor controller board and outdoor power board Communication between outdoor controller board and M NET P C board Check if connector CN4 on outdoor controller board and outdoor power board is not disconnected GCheck if there is poor connection of connector on outdoor controller board CNMNT and CNVMNT Communication error of M NET System SI Error code displayed on remote controller X2 Refer to service manual for indoor unit Check M NET communication signal 74 Indication of the display Alternately blinking display Indication Outdoor controller board LEDA Green LED2 Red Contents Inspection method Detailed 3 blinking 1 blinking Abnormality of shell thermistor TH32 and discharging temperature TH4 Check if stop valves are open Check if connectors TH4 TH32 LEV A on outdoor controller board are not disconnected Check if unit is filled with specified amount of refrigerant Measure resistance values among terminals on indoor valve and outdoor linear expansion valve using a tester 2 blinking Abnormal high pressure High pressure switch 63H worked Check if indoor outdoor units have a short cycle on their air ducts Check if connector 63H on outdoor controller board is not disconnected GCheck if heat exchanger and filter is not dirty Measure resistance v
148. is also applied to the models which has no electric heater Something is wrong with the airflow direction The airflow direction is changed during COOL operation If the up down vane is set to downward in COOL operation it will be automatically set to horizontal blow by the microprocessor in order to prevent water from dropping down 1 Hr will be displayed on the remote controller if the up down vane is set to downward with the fan speed set to be less than LOW The airflow direction is changed during HEAT operation The airflow direction cannot be Set by remote controller In HEAT operation the up down vane is automatically controlled according to the temperature of the indoor unit s heat exchanger In the following cases written below the up down vane will be set to horizontal blow and the setting cannot be changed by remote controller 1 At the beginning of the HEAT operation 2 While the outdoor unit is being stopped by thermostat or when the outdoor unit gets started to operate 3 During DEFROST operation The airflow direction will be back to the setting of remote controller when the above situations are released STANDBY will be displayed on the remote controller in case of 1 and 2 DEFROST will be displayed on the screen in case of 3 The airflow direction does not change Up down vane left right louver 1 Check if the vane is set to a fixed p
149. is still indicated even after performing the action above Overvoltage or voltage shortage and synchronous signal to main circuit Abnormal if any of followings are detected during compressor operation Decrease of DC bus voltage to 310V Instantaneous decrease of DC bus volt age to 200V Increase of DC bus voltage to A12 18 24N 420V A30 36 42N 400V Decrease of input current of outdoor unit to 0 5A only if operation frequency is more than or equal to 40Hz or compres Sor current is more than or equal to 5A Abnormal power synchronous zero cross signal PFC error overcurrent when the current peak of input current increase A12 18 24N 47A peak Decrease of power supply volt age Disconnection of compressor wiring 9 Disconnection or loose con nection of CN52C Defective PFC module of out door power board A12 18 24N only Defective ACT module A30 36 42N only Defective ACT module drive circuit of outdoor power circuit board A30 36 42N only Disconnection or loose con nection of CNAF A30 36 42N only Defective 52C drive circuit of outdoor noise filter circuit board 9 Disconnection or loose connection of CN5 on the outdoor power circuit board Disconnection or loose connection of CN2 on the outdoor power circuit board Check the facility of power supply Correct the wiring U V W phase to com pressor Refer to 10 9 Outdoor power circuit boar
150. k Finished NO YES End function selection mode Note When you switch to function selection mode End troubleshooting mode on the wireless remote controller s operation area the unit ends function selection mode automatically if nothing is input for 10 minutes or longer Operating instructions Check the function settings Press the button twice continuously gt is lit and 00 blinks Press ine temp button once to set 50 Direct the wireless remote controller toward the receiver of the indoor unit and press the button G Set the unit number Press the temp button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the wireless remote controller toward the receiver of the indoor unit and press the button By setting unit number with the 77 button specified indoor unit starts performing fan operation Detect which unit is assigned to which number using this function If unit number is set to AL all the indoor units in same refrigerant system start performing fan operation simultaneously f a unit number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the unit number setting If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the unit number setting Select a mode Press the temp butto
151. lapsed since the filter was reset B In heat mode outdoor intake air temperature is 68 F or higher or indoor intake air temperature is 77 F or lower If the air conditioner is operated at a temperature range other than the ones above but operationis not stabilized after 30 minutes or more have elapsed carry out inspection n heat mode the operation state may vary due to frost forming on the outdoor heat exchanger Cool mode Heat mode eF 81 Inspection 72 o a Area Check item Moo A Normal operation state Filter inspection Filter may be clogged 1 Inspection A Performance has dropped Detailed in spection is necessary Inspection B Refrigerant amount is dropping Inspection C Filter or indoor heat exchanger may be Indoor intake air temperature Indoor heat exchanger temperature 8 Indoor heat exchanger temperature Indoor intake air temperature E 18 36 54 72 90 108 126 144 F 18 36 54 72 90 108 126 144 F o Discharge temperature Outdoor Discharge temperature Indoor clogged heat exchanger temperature heat exchanger temperature The above judgement is just guide based on Japanese standard conditions 1 It may be changed depending on the indoor and outdoor temperature It may be judged as filter inspection due to the outdoor and
152. lay 3 ERC and the number of data errors are displayed Data error has occurred 1 SELF TI SELF CHECK jam Lu i REL ee 1 There might be noise or interference on the transmission path or the indoor unit The number of data errors is the difference between the number of bits sent from or other remote controllers are defective Check the transmission path and other the remote controller and the number actually transmitted through the transmis controllers sion path If such a problem is occurring the transmitted data is affected by noise etc Check the transmission path gt When the number of data errors is 02 Transmission data from remote controller nin rain Transmission data on transmission path To cancel remote controller diagnosis Press the CHECK button for 5 seconds or more Remote controller diagnosis will be cancelled PLEASE WAIT and operation lamp will blink After approximately 30 seconds the state in effect before the diagnosis will be restored 32 10 3 4 Malfunction diagnosis method by wireless remote controller lt In case of trouble during operation gt When a malfunction occurs to air conditioner both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop lt Malfunction diagnosis method at maintenance service gt CHECK display ON OFF button CHECK button A MITSUBISHI ELECTRIC ON OFF
153. layed 2 8 f 5 Request content Unit Remarks Display range 0 Operation state Refer to 13 2 1 Detail Contents in Request Code 1 Compressor Operating current rms 0 50 A 2 Compressor Accumulated operating time 0 9999 10 hours 3 Compressor Number of operation times 0 9999 100 times 4 Discharge temperature TH4 37327 5 Outdoor unit Liquid pipe 1 temperature TH3 40 194 EE 6 Outdoor unit Liquid pipe 2 temperature 40 194 F 7 Outdoor unit 2 phase pipe temperature TH6 38 190 F 8 9 Outdoor unit Outside air temperature TH7 38 190 d 10 Outdoor unit Heatsink temperature TH8 40 327 F 11 12 Discharge super heat SHd 0 327 F 13 Sub cool SC 0 234 F 14 15 16 Compressor Operating frequency 0 255 Hz 17 Compressor Target operating frequency 0 255 Hz 18 Outdoor unit Fan output step 0 10 Step 19 Outdoor antran i speed 0 9999 ipf Only for air conditioners with DC fan motor 20 Outdoor 0 9999 deg 0 is displayed if the air conditioner is a single fan Only for air conditioners with DC fan motor type 21 22 LEV A opening 0 500 Pulses 23 LEV B opening 0 500 Pulses 24 25 Primary current 0 50 A 26 DC bus vol
154. ler line 12m again controller of displayed address and troller that did not reply ACK 39ft attribute may be defective 9 Extension of transmission wire voltage and signal is caused by type unmatched transmis sion wire With shield wire CVVS CPEVS With normal wire no shield VCTF VCTFK CVV CVS WR VVF VCT Diameter 1 25mm AWG16 or more Accidental malfunction of abnormality generated controller 10 5 TROUBLESHOOTING BY INFERIOR PHENOMENA Phenomena Factor Countermeasure 1 Remote controller display does not DC12V is not supplied to remote controller Check LED2 on indoor controller board work Power supply display is not indicated on LCD 1 When LED2 is lit DC12 15V is supplied to remote controller however Check the remote controller wiring for no display is indicated breaking or contact failure PLEASE WAIT is not displayed 2 When LED2 is blinking PLEASE WAIT is displayed Check short circuit of remote controller wiring 3 When LED2 is not lit Refer to phenomena No 3 below Check the following Failure of remote controller if PLEASE WAIT is not displayed Refer to phenomena No 2 below if PLEASE WAIT is displayed 2 PLEASE WAIT display is remained CDAt longest 2 minutes after the power supply PLEASE Normal operation on the remote controller WAIT is displayed to start up Self diagnosis of remote controller Communication error
155. ll be cancelled and the indoor unit will stop 10 3 3 Remote Controller Diagnosis If the air conditioner cannot be operated from the remote controller diagnose the remote controller as explained below O First check that the power on indicator is lit If the correct voltage DC12 V is not supplied to the remote controller the indicator will not light If this occurs check the remote controller s wiring and the indoor unit ZELE CHECK Power on indicator e Switch to the remote controller self diagnosis mode Press the FILTER button to start self diagnosis Dress CHECK button for 5 seconds or more The display content will change as shown below SELF CHECK RL SELF CHECK e Remote controller self diagnosis result When the remote controller is functioning correctly When the remote controller malfunctions Error display 1 NG blinks The remote controller s transmitting receiv ing circuit is defective r D r RL aS PE aS Check for other possible causes as there is no problem with the remote The remote controller must be replaced with a new one 1 1 1 1 1 1 SELF CHECK 1 CHECK 1 1 controller Where the remote controller is not defective but cannot be operated Error display 2 6833 or 6832 blinks Transmission is not possible Error disp
156. losed set the SWP switch on the control board of the outdoor unit to ON The compressor outdoor unit and ventilators indoor and outdoor units start operating and refrigerant recovering operation begins LED1 and LED2 on the control board of the outdoor unit are lit Set the SWP switch push button type to ON in order to perform refrigerant recovering operation only when the unit is stopped However refrigerant recovering operation cannot be performed until compressor stops even if the unit is stopped Wait 3 minutes until compressor stops and set the SWP switch to ON again Because the unit automatically stops in about 2 to 3 minutes after the refrigerant recovering operation LED1 is not lit and LED 2 is lit be sure to quickly close the gas stop valve case the outdoor unit is stopped when LED1 is lit and LED2 is not lit open the liquid stop valve completely and then repeat step O 3 minutes later xIf the refrigerant recovering operation has been completed normally LED1 is not lit and LED2 is lit the unit will remain stopped until the power supply is turned off Turn off the power supply circuit breaker 2 Start and finish of test run Operation from the indoor unit Execute the test run using the installation manual for the indoor unit Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit test run can be started and finished and its operation mode cooling heating can b
157. ls as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only for R410A Use the existing fitting specifications Use high tension side pressure of 5 3MPa G or over Charge hose Only for RA10A Use pressure performance of 5 09MPa G or over Electronic scale Gas leak detector Use the detector for R134a RA07C or RA10A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Refrigerant cylinder Only for RA10A Top of cylinder Pink Cylinder with syphon Refrigerant recovery equipment 2 3 CAUTIONS FOR REFRIGERANT PIPING WORK New refrigerant R410A is adopted for replacement inverter series Although the refrigerant piping work for R410A is same as for R22 exclusive tools are necessary so as not to mix with different kind of refrigerant Furthermore as the working pressure of R410A is 1 6 times higher than that of R22 their sizes of flared sections and flare nuts are different Thickness of pipes Because the working pressure of R410A is higher compared to R22 be sure to use refrigerant piping with thickness shown below Never use pipes of 0 7 mm 7 256 inch or below Diagram below Piping diameter and thickness Nominal Outside Thickness mm inch dimensions inch diameter mm R410A R22 1 4 6 35 0 8 1 32 0 8 1 32 3 8 9 52 0 8 1 32 0 8 1 32 1 2 12 70 0 8 1 32 0 8 1 32 5 8 15 88
158. ltage among L1 and L2 on the terminal block TB1 of the outdoor power circuit board AC 187V to AC 253V e Troubles concerning Check the power wiring power supply to the outdoor unit Check the breaker Check the voltage between S1 and S2 on the terminal block TB1 of the outdoor unit which is used to connect the indoor unit and the outdoor unit AC 187V to AC 253V no Bad wiring of the Check the wiring of the outdoor controller outdoor unit board Check if the wiring is bad YES The fuses on the Check if the fuses are blown Check the voltage of indoor outdoor The fuses on the outdoor controller board CN2D controller circuit controller circuit board will board are blown be blown when the indoor outdoor connecting wire short circuits Bad wiring of the Check if miswiring breaking outdoor controller or poor contact is causing this board problem Indoor outdoor The fuses on the connecting wire is polarized outdoor 3 core type Connect the controller circuit indoor unit and the outdoor board are blown unit by wiring each pair of S1 S2 and S3 on the both side of indoor outdoor terminal blocks DC 12V to DC 16V Check the voltage of the unit after removing the indoor power board CN2S Defective indoor Replace the indoor controller board controller board DC 12V to DC 16V i e Miswiring breaking Check if there is miswiring
159. n be indicated in details by connecting an optional part A Control Service Tool PAC SK52ST to connector CNM on outdoor controller board Display 1 Normal condition Unit condition Outdoor controller board A Control Service Tool LED1 Green LED2 Red Error code When the power is turned on Lighted Lighted When unit stops Lighted Not lighted Operation mode When compressor is warming up Lighted Not lighted 08 etc When unit operates Lighted 2 Abnormal condition Indication Lighted C5 H7 etc Outdoor controller board LED1 Green LED2 Red Contents Inspection method 2 blinking Connector 63L is open Check if connector 63L or 63H on the outdoor controller Connector 63H is open board is not disconnected 2 connectors are open GCheck continuity of pressure switch 63L or 63H by tester 1 blinking Miswiring of indoor outdoor unit conne cting wire excessive number of indoor units 4 units or more Check if indoor outdoor connecting wire is connected correctly Check if 4 or more indoor units are connected to outdoor unit Miswiring of indoor outdoor unit co nnecting wire converse wiring or di sconnection Check if noise entered into indoor outdoor connecting wire or power supply Startup time over Re check error by turning off power and on again 2 blinking
160. n to set a mode Press 24 to turn the function that raises the set temperature by 4 degree during heat operation Direct the wireless remote controller toward the sensor of the indoor unit and press the C3 button The sensor operation indicator will blink and beeps will be heard to indicate the current setting number Current setting number 1 1 beep one second 2 2 beeps one second each 3 3 beeps one second each f a mode number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the mode number f the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the mode number Select the setting number Press the temp 0 button to select the setting number 02 Not available Direct the wireless remote controller toward the receiver of the indoor unit and press the button The sensor operation indicator will blink and beeps will be heard to indicate the setting number Setting number 1 2 beeps 0 4 seconds each 2 2 beeps 0 4 seconds each repeated twice 3 2 beeps 0 4 seconds each repeated 3 times If a setting number that cannot be recognized by the unit is entered the setting will turn back to the original setting If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the setting number Repeat steps and to make an additional
161. ng go to step 6 Compressor information MENU button Qo Cumulative 8 ON OFF Number gt 9 Operating current Display 4 operation time COMP ON COMP ON COMP ON x10 HOURS x100 TIMES CURRENT A Outdoor unit information ON OFF button Heat exchanger gt 5 Comp discharge Outdoor ambient Display temperature temperature temperature OUTDOOR UNIT OUTDOOR UNIT OUTDOOR UNIT H EXC TEMP OUTLET TEMP OUTDOOR TEMP Indoor unit information button Indoor room Heat exchanger Filter operatin temperature temperature 9 time Display INDOOR UNIT INDOOR UNIT INDOOR UNIT INLET TEMP H EXC TEMP FILTER USE H 6 Press the FILTER button to check the setting Display example for accumulated operating time Display 757 Flashing is After approx 12 340 hours Waiting for response 10 seconds 7 Data is displayed on the display at O To check the data for each item repeat steps 5 to 7 8 To cancel maintenance mode press the TEST button for 3 seconds or press the 1 ON OFF button Refrigerant address Single refrigerant system In the case of single refrigerant system the refrigerant address is 00 and no operation is required Simultaneous twin units belong to this category single refrigerant system 1 1 Twin Refrigerant Refrigerant addr
162. ng the right side panel Note 3 When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized Photo 9 4 way valve Linear expansion Linear expansion valve coil LEV A valve 113 OPERATING PROCEDURE PHOTOS 11 Removing the bypass valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 4 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 5 Remove the bypass valve coil See Photo 8 6 Recover refrigerant 7 Remove the welded part of bypass valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Photo 10 Bypass valve fixing screw Bypass valve 12 Removing the high pressure switch 63H 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove the electrical parts box See Photo 3 4 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 5 Pull out the lead wire of high pressure switch 6 Recover refrigerant 7 Remove the welded part of high pressure switch Note 1 Recover refrigerant without spreading it in the air
163. nifold Air purge refrigerant charge Tool exclusive for R410A Charge hose and operation check Tool exclusive for R410A Gas leak detector Gas leak check Tool for HFC refrigerant Refrigerant recovery equipment Collection of refrigerant Tool exclusive for R410A Refrigerant cylinder Refrigerant charge Tool exclusive for R410A Applied oil Apply to flared section Ester oil ether oil and alkylbenzene oil minimum amount Safety charger Prevent compressor malfunction Tool exclusive for R410A when charging refrigerant by spraying liquid refrigerant Charge valve Prevent gas from blowing out Tool exclusive for R410A X when detaching charge hose Vacuum pump Vacuum drying and air Tools for other refrigerants can A Usable if equipped purge be used if equipped with adop with adopter for rever ter for reverse flow check se flow Flare tool Flaring work of piping Tools for other refrigerants A Usable by adjusting can be used by adjusting flaring dimension flaring dimension Bender Bend the pipes Tools can be used for other refrigerants Pipe cutter Cut the pipes Tools can be used for other refrigerants Welder and nitrogen gas cylinder Weld the pipes Tools can be used for other refrigerants Refrigerant charging scale Refrigerant charge Tools can be used for other refrigerants Vacuum gauge thermis Check the degree of vacuum Vacuum Tools can be used for other tor vacuum gauge and valve prevents back flow of oil and refri r
164. ns to be taken for service summary Judge what is wrong and take a corrective action according Displayed to 10 4 Self diagnosis action table The trouble is reoccurring Conduct trouble shooting and ascertain the cause of the Not displayed trouble according to 10 5 Troubleshooting by inferior phenomena Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor poor connection of wiring noise and etc Re check the symptom and check the installation environment refrigerant amount weather when the trouble occurred matters related to wiring and etc GReset error code logs and restart the unit after finishing service GThere is no abnormality concerning of parts such as electrical component controller board remote controller and etc The trouble is not reoccurring Re check the abnormal symptom GConduct trouble shooting and ascertain the cause of the trouble according to 10 5 Troubleshooting by inferior phenomena Not logged GContinue to operate unit for the time being if the cause is not ascertained There is no abnormality concerning of parts such as electrical component controller board remote controller and etc 10 2 CHECK POINT UNDER TEST RUN 1 Before test run After installation of indoor and outdoor units piping work and electric wiring work re check that there is no refrigerant leak age loosene
165. nsmission wiring method Error Code Abnormal point and detection method Case Judgment and action Pipe temperature lt Cooling mode gt Detected as abnormal when the pipe tem perature is not in the cooling range 3 min utes after compressor start and 6 minutes after the liquid or condenser evaporator pipe is out of cooling range Note 1 It takes at least 9 min to detect Note 2 Abnormality P8 is not detected in drying mode Cooling range Indoor pipe temperature TH2 or TH5 intake temperature TH1 3 deg 5 4 F TH Lower temperature between liquid pipe temperature and condenser evaporator temperature lt Heating mode gt When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished the unit is detected as abnormal when condenser evaporator pipe temperature is not in heat ing range within 20 minutes Note 3 It takes at least 27 minutes to detect abnormality Note 4 It excludes the period of defrosting Detection restarts when defrosting mode is over Heating range 3 deg 5 4 F Condenser Evaporator temperature TH5 intake temperature TH1 lt M NET communication error gt Error Code Abnormal point and detection method O Slight temperature difference between indoor room temperature and pipe lt liquid or condenser evaporator gt temperature thermistor Shortage of refrigerant Disconnected holder of pipe lt liquid or cond
166. nt for the selected mode MODE button the corresponding indoor unit will start fan operation This helps you find the location ofthe indoor unit for which you want to perform function selection However if 00 or AL is selected as the unit number all the indoor units corresponding to the specified refrigerant address will start fan operation Example When the refrigerant address is set to 00 and the unit number is 02 00 refrigerant address Outdoor unit Indoor unit Unit number 01 Unit number 02 Designate operation Remote controller Fan draft When grouping different refrigerant systems if an indoor unit other than the one to which the refrigerant address has been set to perform fan operation there may be another refrigerant address that is the same as the specified one In this case check the DIP switch of the outdoor unit to see whether such a refrigerant address exists Mode number display section e Mode number 02 Indoor temperature detection Press thel E TEMP buttons and A to select the desired setting Press the MENU button The currently selected setting number will blink so check the currently set content number uu UU e Setting number display section Register the settings you have made in steps to Press the MODE button The mode numbe
167. of stop valve Not full open Clogged or broken pipe Locked outdoor fan motor Malfunction of outdoor fan motor Short cycle of outdoor unit Dirt of outdoor heat exchanger 3 Decreased airflow caused by defective inspection of outside temperature thermistor It detects lower temperature than actual temperature Disconnection or contact failure of connector 63H on outdoor controller board Disconnection or contact failure of 63H connection 46 Defective outdoor controller board 42 Defective action of linear expansion valve 48 Malfunction of fan driving circuit Q GCheck indoor unit and repair the defect Check if stop valve is fully open Check piping and repair the defect Check outdoor unit and repair the defect 43 Check the inspected temperature of outside temperature thermistor on LED display SW2 on A Control Service Tool Refer to 10 10 5 9 Turn the power off and check F5 is displayed when the power is on again When F5 is displayed refer to Judgment and action for F5 Check linear expansion valve Refer to 10 6 7 Replace outdoor controller board U2 TH4 1102 TH32 1132 High discharging temperature High comp shell temperature 1 Abnormal if discharge temperature thermistor TH4 exceeds 125 C 257 F or 110 C 230 F continuously for 5 min utes Abnormal if condenser evaporator tem perature thermistor TH5 exceeds 40 C 104 F d
168. oint in order to define the valve position The pulse signal is being sent for about 20 seconds When the valve moves smoothly there is no sound or vibration occurring from the linear expansion valve however when the pulse number moves from to amp or when the valve is locked sound can be heard than normal situation No sound is heard when the pulse number moves from to in case coil is burn out or motor is locked by open phase Sound can be detected by placing the ear against the screw driv er handle while putting the screw driver to the linear expansion valve 58 Linear expansion valve A24 30 36 42 1 Operation summary of the linear expansion valve Linear expansion valve opens closes through stepping motor after receiving the pulse signal from the outdoor controller board Valve position can be changed in proportion to the number of pulse signal Connection between the outdoor controller board and the linear expansion valve Outdoor controller board Gray Lu 4 Orange 3 lt Ee ppc dl Black 6 wal SS Connector LEV A lt Output pulse signal and the valve operation gt LEV 9 Opening a valve 8 gt 7 gt 6 gt 5 gt 43 gt 2 gt 1 gt 8 Closing a valve 12223 gt 4905 gt 56 gt 57 gt 8 gt 1 The output pulse shifts in above order When linear expansion valve operation stops
169. onoeuuoo edid GINO ugefuer og puusa lt B EM gt OLW 40g uonepuno 9EXZ L Z e lt ZE EL LE gt 096 efueuosiq lt gt s t Le 8c lt ZE E Z gt lt 8 6 6 gt 99 lt QL L gt 0 celevol LLY 9V6 vi OLE atte lt CE L C gt 99 celac y Sv L DEE atte vie 6L lt 8 9 22 gt 009 lt 8 L 9 gt SLL lt 8 M gt 0LW uonejpuno payojou pedeus nz Eent 9 6 98 GL d 35v 13 uonoeuuoo edid SYD 0 xe dom z lt 9L gt WWO0E fii IN OPIS pue epeu eq ued pue Dudu L1 lt 91 161 gt 009 Ul u6teu yoq uonepuno lt 9 61 gt Aj eoo peseuound eq snu Sjeusew pue 09 109 gigM 01A uonepunoj uy ay aseajd 00 uwous 859006 eoeds suoisuewiq S9 ON e duex3 lt OLSL gt EIER Quan le gre Cam E uonejjejsul ay
170. ontroller TEMPERATURE DISPLAY C F SETTING Change of temp mode from F to C D Press the set button with something sharp at the end MODEL SELECT blinks AUTO START Press the button F blinks Press the 9 button C blinks Press the set button with something sharp at the end MODEL SELECT is lighted for seconds then turned off va A MITSUBISHI ELECTRIC CHECK TEST OCH FAN ON OFF RUNJ L 1L oo P C NOT AVAILABLE TEMP ICT OC dE HH EN Zog FAN AUTO STOP o Siet MODE VANE AUTO START CHECK er RU 1 SET RESET CLOCK q 95 13 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 13 1 HOW TO MONITOR THE OPERATION DATA Turn onthe Monitoring the operation data A MITSUBISHI ELECTRIC Example Request code 004 F Discharge temperature 156 56 Refrigerant address 00 ON OFF e 5 8 OMENU Ful N mme Seem A Mode display em 4 en 5 e ia 1 B Refrigerant address Data display area 4 Se ag 2 6 D Request code display area 1 Press the TEST button for 3 seconds so that M
171. oom temperature thermistor TH1 Abnormality of pipe temperature thermistor Liquid TH2 Abnormality of pipe temperature thermistor Condenser Evaporator TH5 Check if connectors CN20 CN21 CN29 and CN44 on indoor controller board are not disconnected resistance value of indoor thermistors 2 blinking Abnormality of drain sensor DS Float switch connector open FS Indoor drain overflow protection Check if connector CN31 CN4F on indoor controller board is not disconnected Measure resistance value of indoor thermistors GMeasure resistance value among terminals on drain pump using a tester Check if drain pump works GCheck drain function 3 blinking Freezing cooling overheating heating protection Check if indoor unit has a short cycle on its air duct Check if heat exchanger and filter is not dirty Measure resistance value on indoor and outdoor fan motors Check if the inside of refrigerant piping is not clogged 4 blinking Abnormality of pipe temperature Check if indoor thermistors TH2 and TH5 are not disconnected from holder Check if stop valve is open GCheck converse connection of extension pipe on plural units connection Check if indoor outdoor connecting wire is connected correctly on plural units connection 5 blinking Abnormality of indoor con troller board Replace indoor controller board Abnormality of remote con
172. oprocessor to prevent overcooling and to ensure efficient dehumidification The fan speed cannot be set by the remote controller during DRY operation Q The fan speed does not match the setting of the remote controller in HEAT operation This is not a malfunction 1 When the HEAT operation starts to prevent the unit from blowing cold air the fan speed is gradually increased from 0 to the set speed in proportion to the temperature rise of the discharged air 2 When the room temperature reaches the set temperature and the outdoor unit stops the unit starts the LOW AIR operation 3 During the HEAT operation the DEFROST operation is performed to defrost the outdoor unit During the DEFROST operation the fan is stopped to prevent cold air coming out of the indoor unit The up down vane will be automatically set to horizontal blow in these cases listed up on the left 1 3 After a while the up down vane will be automatically moved according to the setting of the remote controller Phone Calls From Customers How to Respond Note Something is wrong with the blower 9 Air blows out for a while after HEAT operation is stopped G This is not a malfunction The blower is operating just for cooling down the heated up air conditioner This will be done within 1 minute This control is conducted only when the HEAT operation is stopped with the electric heater ON However this control
173. osition Check if the vane motor connector is removed 2 Check if the air conditioner has a function for switching the air direction 3 If the air conditioner doesn t have that function NOT AVAILABLE will be displayed on the remote controller when AIR DIRECTION or LOUVER button is pressed The air conditioner starts operating even though any buttons on the remote controller are not pressed D Check if you set ON OFF timer The air conditioner starts operating at the time designated if ON timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTRALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of external directive There might be a case that CENTRALLY CONTROLLED INDICATOR will not be displayed Check if power is recovered from power failure black out The units will automatically start operating when power is recovered after power failure black out occurs This function is called auto recovery feature from power The air conditioner stops even though any buttons on the remote controller are not pressed D Check if you set ON OFF timer The air conditioner stops operating at the time designated if OFF timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTR
174. outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection Outdoor controller circuit board can automatically set the unit number of indoor units Abnormal if the indoor unit number can not be set within 4 minutes after power on because of miswiring converse wiring or disconnection of indoor outdoor unit con necting wire Contact failure miswiring of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Start up time over The unit cannot finish start up process within 4 minutes after power on Contact failure of Indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wi
175. perature is 100degF or more hun dreds digit tens digit and ones digit are displayed by turns Input current of outdoor unit 0 500 When it is 100 or more hundreds digit tens digit and ones digit are displayed by turns Targeted operation frequency 0 255 0 255 When it is 100Hz or more hundreds digit tens digit and ones digit are displayed by turns DC bus voltage 180 370 180 370 When it is 100V or more hundreds digit tens digit and ones digit are displayed by turns 80 SW2 setting Display detail The black square indicates a switch position Explanation for display Capacity save 0 100 When air conditioner is connected to M NET and capacity save mode is demanded 0 100 is displayed When there is no setting of capacity save 100 is displayed 0 100 When the capacity is 10096 hundreds digit tens digit and ones digit are displayed by turns Example When 100 0 5 secs 0 55 2 secs 00 gt Error postponement code history 2 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Error postponement code history 3 of outdoor unit Postponement code display Blinking During postponement Lightin
176. pt 1 ON OFF button are locked no2 All operation buttons are locked OFF Initial setting value Operation lock setting is not made To make the operation lock setting valid on the normal screen it is necessary to press buttons Press and hold down the FILTER and ON OFF buttons at the same time for 2 seconds on the normal screen after the above setting is made 2 Use of automatic mode setting When the remote controller is connected to the unit that has auto matic operation mode the following settings can be made To switch the setting press the ON OFF button ON Initial setting value The automatic mode is displayed when the operation mode is selected OFF The automatic mode is not displayed when the operation mode is selected 3 Temperature range limit setting After this setting is made the temperature can be changed within the set range To switch the setting press the ON OFF button LIMIT TEMP COOL The temperature range can be changed on cooling dry mode LIMIT TEMP HEAT The temperature range can be changed on heating mode G LIMIT TEMP AUTO MODE The temperature range can be changed on automatic mode OFF initial setting The temperature range limit is not active When the setting other than OFF is made the temperature range limit setting on cooling heating and automatic mode is made at the same time However the range
177. r and setting number will start to blink and registration starts 1 Setting number 1 Indoor unit operating average erm number 3 Remote controller built in sensor The mode number and setting number will stop blinking and remain lit indicating the end of registration ka MEL LIL LIU UU a gt 023 ES If is displayed for both the mode number and setting number and 55 blinks in the room temperature display area a transmission error may have occurred Check to see if there are any sources of noise or interference near the transmission path If you wish to continue to select other functions repeat steps to Complete function selection Hold down the FILTER CD mode is 15 to 28 and TEST buttons simultaneously for at least 2 seconds After a while the function selection screen will disappear and the air condi tioner OFF screen will reappear e Do not operate the remote controller for at least 30 seconds after completing function selection No operations will be accepted even if they are made Note If a function of an indoor unit is changed by function selection after installation is complete make sure that a O mark etc is given in the Check column of Table 1 to indicate the change 91 12 1 2 Selecting functions using the wireless remote controller Type C Functions can be selected with the wireless remote
178. r to main body At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly attached to main body coil may be detached from the main body and that can cause defective operation of lin ear expansion valve To prevent piping stress be sure to attach the coil holding the main body of linear expansion valve firmly Otherwise pipe may break 61 10 8 EMERGENCY OPERATION 1 When the error codes shown below are displayed on outdoor unit or microprocessor for wired remote controller or indoor unit has a failure but no other problems are found emergency operation will be available by setting the emergency opera tion switch SWE to ON and short circuiting the connector CN31 on outdoor controller board When following abnormalities occur emergency operation will be available Error code Inspected content U4 Open short of pipe thermistor TH3 TH6 E8 Indoor outdoor unit communication error Signal receiving error Outdoor unit E9 Indoor outdoor unit communication error Transmitting error Indoor unit Communication error other than outdoor unit Ed Communicaiton error between outdoor controller board and M NET board Serial communication error 2 Check the following items and cautions for emergency operation Make sure that there is no abnormality in outdoor unit other than the above abnormalities Emergency operation will not
179. rature TH8 at time of error 40 327 Zb 118 Discharge super heat SHd at time of error 0 327 119 Sub cool SC at time of error 0 234 F 120 Compressor Operating frequency at time of error 0 255 Hz 424 Outdoor unit at time of error 0 10 Step Fan output step 122 Outdoor unit at time of error 0 9999 pni Fan 1 speed Only for air conditioners with DC fan 423 Outdoor unit at time of error 0 9999 rpm O is displayed if the air conditioner is a single Fan 2 speed Only for air conditioners with DC fan fan type 124 125 LEV A opening at time of error 0 500 Pulses 126 LEV B opening at time of error 0 500 Pulses 127 128 129 130 Thermo ON time until operation stops due to error 0 999 Minutes 131 132 Indoor Liquid pipe temperature at time of error 38 190 oF Average value of all indoor units is displayed if the air condi tioner consists of two or more indoor units twin triple quad 133 Indoor Cond Eva pipe temperature at time of error 38 190 oF Average value of all indoor units is displayed if the air condi tioner consists of two or more indoor units twin triple quad 134 Indoor arime of error 38 190 oF Intake air temperature Thermostat judge temperature 135 136 137 138 139 140 146 147 148 149 150 Indoor Actual intake air temperature 38 190 151 Indoor Liquid pipe temperature 38 190 F 152 Indoor Cond Eva pipe temperature 38 190 F
180. rdingly Check all the current settings according to steps to fill in the Check column in Table 1 then change them as necessary For initial settings refer to the indoor unit s installation manual Switch off the remote controller lt Hold down the FILTER C mode is 15 to 28 and TEST FUNCTION Wij i buttons simultaneously for at least 2 seconds sc ection Will start to blink then the remote controller s display content will change as shown below NE Refrigerant address display section G Set the outdoor unit s refrigerant address Press the CLOCK buttons and _A_ to select the desired refrigerant address The refrigerant address changes from 00 to 15 This operation is not possible for single refrigerant systems e If the unit stops after blinked for 2 seconds or 88 blinks in the room temperature display area for 2 seconds a transmission error may have occurred Check to see if there are any sources of noise or interference near the transmission path Note If you have made operational mistakes during this procedure exit function selection see step 9 then restart from step Set the indoor unit number Pressthe ON OFF button so that blinks in the unit number display Press the CLOCK buttons and _A_ to select the unit number of the indoor unit for which you want to perform
181. re Check disconnection or looseness or polarity of indoor outdoor unit connecting wire of indoor and outdoor units Check diameter and length of indoor outdoor unit connecting wire Total wiring length 80m 262ft including wiring connecting each indoor unit and between indoor and outdoor unit Also check if the connection order of flat cable is S1 S2 S3 Check the number of indoor units that are connected to one outdoor unit If EA is detected Turn the power off once and on again to check Replace outdoor controller circuit board indoor controller board or indoor power board if abnormality occurs again Check if refrigerant addresses SW1 3 to SW1 6 on outdoor controller circuit board are overlapping in case of group control system Check transmission path and remove the cause The descriptions above are for EA Eb and EC lt Abnormalities detected while unit is operating gt Error Code Abnormal point and detection method Case Judgment and action High pressure High pressure switch 63H operated Abnormal if high pressure switch 63H oper ated during compressor operation 4 15 MPa 602PSIG 63H High pressure switch Short cycle of indoor unit Clogged filter of indoor unit Decreased airflow caused by dirt of indoor fan Dirt of indoor heat exchanger Locked indoor fan motor Malfunction of indoor fan motor Defective operation
182. re overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Display Correction value minus 1 0 0 1 1 2 2 Actuator output state Request code 54 Data display 9 Q sk L Actuator output state Actuator output state Actuator output state D Actuator output state Display SV1 Four way valve Compressor Compressor Display 52C SV2 SS warming up 0 0 1 ON 1 ON 2 ON 2 ON 3 ON ON 3 ON ON 4 ON 4 ON 5 ON ON 5 ON ON 6 ON ON 6 ON ON 7 ON ON ON 7 ON ON ON 8 ON 9 ON ON A ON ON b ON ON ON C ON ON d ON ON ON E ON ON ON F ON ON ON ON Error content U9 Request code 55 Data display olo l Error content Error content Error content Detected Error content Detected Display Overvoltage Undervoltage Li phase Power synchronizing Display Converter Fo PAM error error error open error signal error error 0 0 1 e 1 e 2 e 2 e 3 e e 3 e e 4 e 5 e e 6 e e 7 8 9 b e e e C e e d e e e E e e F e e e e 102 Contact demand capacity Request code 61 Data display External input state Request code 62
183. ror history P8 Abnormality of pipe temperature FFFF No applied unit Abnormality of pipe temperature thermistor Cond Eva Forced compressor stop due to water leakage abnormality Abnormality of indoor controller board See the table below for details of the LED display LED 1 2 3 on the indoor controller board LED1 microprocessor power supply Lights when power is supplied Lights when power is supplied for wired remote controller LED2 remote controller The indoor unit should be connected to the outdoor unit with address 0 setting LED3 indoor outdoor communication Flashes when indoor and outdoor unit are communicating 29 Test run for wireless remote controller Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1 0MQ Turn on the main power to the unit Press the button twice continuously Start this operation from the turned off status of remote controller display ON OFF D and current operation mode are displayed a Q Press the MEPE eorr button to activate con mode then check whether cool air is blown out from the unit Press the 5 button to activate mode then A MITSUBISHI ELECTRIC LIOI FAN AUTOSTOP check whether warm air is
184. s In case of multiple grouping system M NET and refrigerant address settings should be done as explained in the above sec tion Set the lowest number in the group for the outdoor unit whose refrigerant address is 00 as its M NET address Group A C For df Refrigerant System 1 address 00 controller ET Power address 01 su unit transmission wire A control remote controller Refrigerant address 00 controller M NET Power address 01 suppl Unit for transmission wire Ft A control remote controller A control Group C Group B Refrigerant address 00 M NET address 04 Refrigerant Refrigerant address 00 address 01 M NET JING address 03 C ET address 02 A control remote remote controller Refrigerant address 01 M NET address 02 Refrig amp address 8 controller Refrigera Refrigerant address 41 address 02 address 05 A control remote In group B M NET address of the outdoor unit whose refrigerant address is 00 is not set to the minimum in the group As 03 is right for this situation the setting is wrong Taking group A as a good sample set the minimum M NET address in the group for the outdoor unit whose refrigerant address is 00 24 9 REFRIGERANT SYSTEM DIAGRAM PUZ A18NHA4 BS Unit mm inch lt 4 way valv
185. s displayed on remote controller and E4 is displayed at LED LED1 LED2 on the outdoor controller circuit board Miswiring of remote controller Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board of refrigerant address 0 Noise has entered into the transmission wire of remote controller Check disconnection or looseness of indoor unit or transmission wire of remote controller Set one of the remote controllers main If there is no problem with the action above Check wiring of remote controller Total wiring length max 500m 1640ft Do not use cable x 3 or more The number of connecting indoor units max 16 units The number of connecting remote control ler max 2 units When the above mentioned problem of O are not applied Diagnose remote controllers a When RC is displayed remote controllers have no problem Turn the power off and on again to check If abnormality generates again replace indoor controller board b When RC NG is displayed replace remote controller c When RC E3 or ERC 00 66 is dis played noise may be causing abnormality If the unit is not normal after replacing indoor controller board in group control indoor con troller board of address 0 may be abnormal Remote controller control board Abnormal if data cannot be normally read from the nonvolatil
186. s the refrigerant address 0 supplies power to the remote controller Defective outdoor controller circuit board Defective outdoor controller circuit board Defective indoor controller board Influence of electromagnetic noise Defective outdoor power circuit board Defective indoor power board Fix the breaking or poor contact of the indoor outdoor connecting wire Set the refrigerant address to 0 In case of the multiple grouping system recheck the refrigerant address again Replace the outdoor controller circuit board Replace the outdoor controller circuit board Replace the indoor controller board of the indoor unit which does not operate Not abnormal There may be the influence of electromagnetic noise Check the transmission wire and get rid of the causes Replace the outdoor power circuit board Replace the indoor power board Symptoms Nothing is displayed on the remote controller Diagnosis flow LED display of the indoor controller board LED1 6 LED2 Core LED3 7 Inspection method and troubleshooting Check the voltage of the terminal block TB6 of the remote controller DC 10V to DC 16V MES NO Check the status __Lighting of the LED2 Blinking Check the status of the LED2 after disconnecting the remote controller wire from the terminal block TB5 of the indoor unit
187. s you to check operation data of the indoor and outdoor units by remote controller Furthermore use of maintenance stable operation control that fixes the operating frequency allows smooth inspection even for inverter models Smooth Mainte nance Function ACU CUE AN e Conventional inspection work A MITSUBISHI ELECTO Outdoor unit unit Remove the EM P service panel the intake air EM a 4 onn Ji TEMP DON OFF eum Easy maintenance information unit Measure the disch 6 Accumulated operating Heat exchanger 6 Intake air ES time x10 hours temperature F temperature F Number of ON OFF Discharge Heat exchanger EN times 10 times temperature F temperature F Operating Outside air Filter operating current temperature F time Hours The filter operating time is the time that has elapsed since the filter was reset 11 1 MAINTENANCE MODE OPERATION METHOD Ifyou are going to use the 11 2 GUIDE FOR OPERATION CONDITION set the airflow to High before activating maintenance mode Switching to maintenance mode Maintenance mode can be activated either when the air conditioner is operated or stopped It cannot be activated during test run x Maintenance information can be viewed even if the air conditioner is stopped
188. separate indoor unit outdoor unit power supplies only SW8 There are three types of labels labels A B and C Affix the appropriate labels to the units according to the wiring method Connectors connections when shipped from the factory are or indoor unit power supplied rom outdoor unit L1 If the indoor and outdoor units have separate power supplies change the connections of the L2 connectors as shown Jama ama 51 52 53 Indoor unit power supplied from outdoor unit Initial setting in the following figure Indoor unit control board Connectors D g m SIS IE l BIB FE ove mS ei Indoor unit d control board 53 e Separate indoor unit outdoor unit power supplies PLA A12 18 24 30 PKA PCA 24 30 Single 208 230 V 60 Hz Indoor unit model Indoor unit power supply PLA A36 42 PCA A36 42 Single 208 230 V 60 Hz Minimum circuit ampacity 1A 2A Maximum rating of overcurrent protective device 15A 15A Indoor unit power supply 2x Min AWG16 2x Min AWG16 Indoor unit power supply earth 1x Min AWG16 1x Min AWG16 Indoor unit Outdoor unit 2 AWG22 polar Indoor unit earth v o BOT zz 2 x AWG22 polar Remote controller Indoor unit 2 AWG22 Non polar 2 x AWG22 Non polar Indoor uni
189. ses are set to O 8 4 2 Refrigerant address setting address number should be consecutively set in a same group Setting example M NET Address 1 2 50 Switching digit C A 2 setting sw12 es a In case of multiple grouping system multiple refrigerant circuits in one group indoor units should be connected by remote controller wiring TB5 and the refrigerant address needs to be set Leave the refrigerant addresses to 00 if the group set ting is not conducted Set the refrigerant address by using DIP SW1 3 to 6 on the outdoor controller board Initial setting all switches are OFF All refrigerant addresses are 00 DIDI aad adasacaau jodgamscadj inamsmcmog pnpoiumpD OF om Im LE Om Oe or Uleies US eee oF Oe Tel T23456 T23456 TASASE T 3456 123456 T 3456 123456 T23456 Refrigerant 0 1 2 3 1 5 6 7 address OOs80O08 NOOOBOs NOOS BOB OOOO8 8 C or or OO or OO or OO jor OOD orl mm OOO 123456 123456 123456 123456 123456 123456 123456 123456 8 9 10 11 12 13 14 15 8 4 3 Regulations in address setting
190. setting without changing unit number Repeat steps 9 to to change unit number and make function settings on it Complete the function settings Press button Do not use the wireless remote controller for 30 seconds after completing the function setting 92 12 2 FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode Change the setting when needed Item 1 Item 2 Item 3 Setting content 1 Change language Language setting to display CHANGE LANGUAGE Display in multiple languages is possible 2 Function limit 1 Operation function limit setting operation lock LOCKING FUNCTION Setting the range of operation limit operation lock FUNCTION SELECTION 2 Use of automatic mode setting SELECT AUTO MODE Setting the use or non use of automatic operation mode 3 Temperature range limit setting LIMIT TEMP FUNCTION Setting the temperature adjustable range maximum minimum 3 Mode selection 1 Remote controller main sub setting CONTROLLER MAIN SUB MODE SELECTION Selecting main or sub remote controller When two remote controllers are connected to one group one controller must be set to sub 2 Use of clock setting CLOCK Setting the use or non use of clock function 3 Timer function setting WEEKLY TIMER Setting t
191. sly after power supply 63L Low pressure switch lt A42N only gt Disconnection or contact failure of 63L connector on outdoor controller circuit board Disconnection or contact failure of 63L 9 63L is operating due to refriger ant leakage or defective parts Defective outdoor controller circuit board Check connection of 63L connector on outdoor controller circuit board Refer to 10 9 Check the 63L side of connecting wire Check refrigerant pressure Charge additional refrigerant Check continuity by tester Replace the parts if the parts are defective Replace outdoor controller circuit board Error Code Abnormal point and detection method Case Judgment and action 63H connector open Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply 63H High pressure switch Disconnection or contact failure of 63H connector on outdoor controller circuit board Disconnection or contact failure of 63H 9 63H is operating due to defective parts Defective outdoor controller circuit board Check connection of 63H connector on outdoor controller circuit board Refer to 10 9 Check the 63H side of connecting wire G Check continuity by tester Replace the parts if the parts are defective Replace outdoor controller circuit board 2 connector open Abnormal if both 63H and 63L connector circuits are open for 3 minutes contin
192. splay section of the room temperature and lamp green of the remote controller will blink As to INDOOR BOARD LED LED will be lit LED2 will either be lit in case the address is 0 or turned off in case the address is not 0 LED3 will blink As to OUTDOOR BOARD LED LED green and LED2 red will be lit After the startup mode of the system finishes LED2 red will be turned off In case OUTDOOR BOARD LED is digital display and will be displayed alternately every second If one of the above operations does not function correctly the causes written below should be considered Find causes from the symptoms The below symptoms are under test run mode startup in the table means the display status of 1 written above Symptoms in test run mode z i Cause Remote Controller Display estes distal Remote controller displays PLEASE After startup is displayed only After power is turned on PLEASE WAIT is displayed for 2 WAIT and cannot be operated green lights up lt 00 gt minutes during system startup Normal SH aub dS Incorrect connection of outdoor terminal block L1 L2 and blink alternately F1 51 52 53 After startup is displayed green once and red twice Outdoor unit s protection device connector is open blink alternately F3 F5 F9 After startup is displayed Incorrect wiring between the indoor and outdoor unit Polarity green twice and red once is
193. splayed stably in Display S Refrigerant discharge temperature COOL F HEAT F on the remote controller Stable Unstable c A H E 9 air temperature F g Temperature Discharge temperature Outdoor oF 8 Air discharge temperature COOL F MEAT F difference heat exchanger temperature 6 le Appearance Good Cleaning Indoor intake air temperature of 5 Heat Good Cleaning required Indoor heat exchanger temperature Sound vibration Present Inspection Is 000 displayed stably in Display g Air intake air temperature COOL HI HEAT F on the remote controller Stable Unstable n Air discharge temperature COOL F HEAT F Temperature Discharge temperature Indoor x 2 o o E exchanger temperature COOL F HEAT F difference heat exchanger temperature St Filter operating time Time Indoor heat exchanger temperature oF SI Decorative panel Good Cleaning required Indoor intake air temperature g 8 Filter Good Cleaning required Fan Good Cleaning reguired Fixed Hz operation may not be possible under the following tempera Heat exchanger Good Cleaning required ture ranges Sound vibration None Present A In cool mode outdoor intake air temperature is 104 For higher or indoor intake air temperature is 73 F or lower The filter operating time is the time that has e
194. t L1 L2 AC 208 230 V Indoor unit Outdoor unit 51 52 AC 208 230 V Circuit rating Indoor unit Outdoor unit S2 S3 DC24V DC24 V Remote controller Indoor unit DC12V 1 Max 50 m 165 ft 2 The 10 m 30 ft wire is attached in the remote controller accessory Max 500 m 1500 ft 8 The figures are NOT always against the ground Notes 1 Wiring size must comply with the applicable local and national code 2 Use copper supply wires 3 Use wires rated 300V or more for the power supply cables 4 Install an earth longer than other cables 21 DC12V 8 3 INDOOR OUTDOOR CONNECTING CABLE Wire No x Size Outdoor power supply Max 45m 147ft Max 50m 164ft Max 80m 262ft Indoor unit Outdoor unit 3 x AWG15 polar x AWG13 polar 3 x AWG13 polar and S3 separated x The max cable length may vary depending on the condition of installation humidity or materials etc Indoor Outdoor separate Wire No x Size power supply Max 120m 393ft Indoor unit Outdoor unit 2 x Min AWG22 The optional indoor power supply terminal kit is necessary Be sure to connect the indoor outdoor connecting cables directly to the units no intermediate connections Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point 22 8 4 M NET W
195. t is used to fix the operation state 766 Stable operation Cool mode This request code is not provided to collect data It is used to fix the operation state 5 This request code is not provided to collect data It is used to cancel the operation state that has been 767 Stable operation cancellation fixed by request codes 765 and 766 100 13 2 1 Detail Contents in Request Code Example Request code 004 Discharge temperature 156 F Refrigerant address 00 A Mode display B Refrigerant address Operation state Request code 0 Data display C4 Relay output state Operation mode Operation mode Display Operation mode 0 STOP FAN C COOL DRY H HEAT d DEFROST Indoor unit Control state Request code 50 C Data display area D Request code display area Relay output state Data display xK k k Unit No 4 state Unit No 3 state Unit No 2 state Unit No 1 state Outdoor unit Control state Request code 51 Data display State O 0 O O Normal O O 0 1 Preparing forheat operation O O 0 2 Defrost Compressor Frequency control state Request code 52 Data display
196. tage 180 370 V 27 28 29 Number of connected indoor units 0 4 Units 30 Indoor unit Setting temperature 62 86 F 31 Indoor unit Intake air temperature Measured by thermostat 46 102 32 Indoor unit Intake air temperature Unit No 1 46 102 oF O is displayed if the target unit is not present Heat mode 4 deg correction 33 Indoor unit Intake air temperature Unit No 2 46 102 oF lt Heat mode 4 deg correction gt 24 Indoor unit Intake air temperature Unit No 3 46 102 oF t Heat mode 4 deg correction 35 Indoor unit Intake air temperature Unit No 4 46 102 oF t lt Heat mode 4 deg correction gt 36 37 Indoor unit Liquid pipe temperature Unit No 1 38 190 F 0 is displayed if the target unit is not present 38 Indoor unit Liquid pipe temperature Unit No 2 38 190 ZF T 39 Indoor unit Liquid pipe temperature Unit No 3 38 190 E T 40 Indoor unit Liquid pipe temperature Unit No 4 38 190 SE 1 41 42 Indoor unit Cond Eva pipe temperature Unit No 1 38 190 F 0 is displayed if the target unit is not present 43 Indoor unit Cond Eva pipe temperature Unit No 2 38 190 SE T 44 Indoor unit Cond Eva pipe temperature Unit 3 38 190 E T 45 Indoor unit Cond Eva pipe temperature Unit No 4 38 190 T 46 47 48 Thermo ON operating time 0 999 Minutes 49 Test run elapsed time 0 120 Minutes Not possible to a
197. tch Outdoor unit Indoor unit outdoor unit connecting cords Remote controller Indoor unit Indoor unit earth M J NG PLA A12 18 24 30 PCA A24 30 PKA PLA A36 42 Indoor unit model PCA A36 42 Indoor unit power supply Minimum circuit ampacity Maximum rating of overcurrent protective device Outdoor unit model Outdoor unit power supply Breaker size 4 Minimum circuit ampacity Maximum rating of overcurrent protective device Outdoor unit power supply Outdoor unit power supply earth Indoor unit Outdoor unit Indoor unit earth a Single 208 230 V 60 Hz Single 208 230 V 60 Hz Single 208 230 V 60 Hz Single 208 230 V 60 Hz 1 x Min AWG 10 1 x Min AWG 16 Remote controller Indoor unit 2 2 x AWG 22 Non polar 2 x AWG 22 Non polar 2 x AWG 22 Non polar 2 x AWG 22 Non polar 2 x AWG 22 Non polar 2 x AWG 22 Non polar 2 Min AWG 10 1 x Min AWG 10 3 X AWG 16 polar 1 x Min AWG 16 2x Min AWG 10 1 x Min AWG 10 3 x AWG 16 polar 1 x Min AWG 16 2x Min AWG 14 1 x Min AWG 14 3 X AWG 16 polar 1 x Min AWG 16 2 x Min AWG 14 1 x Min AWG 14 3 x AWG 16 polar 1 x Min AWG 16 2 x Min AWG 12 1 x Min AWG 12 3 X AWG 16 polar 1 x Min AWG 16 Wiring Wire No x 1 Outdoor unit L1 L2 3 Indoor unit Outdoor unit 51 52 3 Indoor unit Outdoor unit 52 53 3 Remote controller Indoor unit 3 AC 208 230 V AC 208 230
198. tch 63H Photo 11 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the conduit cover and cord cover See Photo 2 5 Remove the back panel See Photo 1 6 Remove the electrical parts box See Photo 5 7 Pull out the lead wire of high pressure switch 8 Recover refrigerant 9 Remove the welded part of high pressure switch Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the back panel Note 3 When installing the high pressure switch cover it with a wet cloth to prevent it from heating 210 F or more then braze the pipes so that the inside of pipes are not oxidized High pressure switch 63H Charge plug 11 Removing the reactor ACL 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the back panel See Photo 1 5 Remove 3 reactor fixing screws 4 x 20 and remove the reactor x The reactor is attached to the rear of the electrical parts box Photo 12 Electrical UM E parts box Reactor fixing screws 109 OPERATING PROCEDURE PHOTOS 12 Removing the compressor MC 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Remove the conduit cover
199. temperature WB 12 6 OUTLINES AND DIMENSIONS OUTDOOR UNIT PUY A12 18NHA4 PUZ A18NHA4 PUZ A18NHA4 BS A 400 lt 15 25 32 gt g 347 5 lt 13 11 16 gt 33 lt 1 5 16 gt drain hole Air intake E 8 mM gt Iv d d EE he 4 585 Air intake C7 y 4 L Se 45 4 lt 1 25 32 gt i A Air discharge 3 4 oval hole 40 lt 1 9 16 gt 5 N 22 lt 7 8 gt 2 22 2 lt 7 8 gt Unit mm lt inch gt PUY A12 18NHA4 BS 23 lt 29 32 gt Service panel Service panel for charge plug A MET 1 2 conduit hole M Handle H Connection for liquid pipe EES FLARE 46 35 1 4 S d E amp Y S 8 S a 3E 25 A 85 o E 7 g d A y E Connection for gas pipe 144 lt 5 21 32 gt 412 7 lt 1 2 gt 150 lt 5 29 32 gt Service port 183 lt 7 7 32 gt 287 5 lt 11 11 32 gt Installation bolt pitch 500 lt 19 11 16 gt 69 lt 2 23 32 gt 800 lt 31 1 2 gt Free space around the outdoor unit b
200. tion Setup gt TABU V W Connection Terminal lt U V W Phase gt 5 9 Switch When M NET adapter is connected 63H LEVA TH32 TH7 TH3 ay fen E C B 5 M di d Lee mut 59 6666 65 595558 555 69595 da x 1 6 SS E MS 2 THI TH3 LEV A vir MNETADAFTER lt BLK RED WHT WHT WHT SS E 25E Zeep a z 1 wun 3 u E 25 3 1 1 3 1 m 14 2 63H i n AN CN2 WHT 12 ap TRANS BT Ka 16 1 0900990 5 CNDC 2 t 4 pe PNK 2r e 5 F2 F3 Ee ebe SE 1 Ao 8 2154 at sv2 31 1 SS 4 5 GRN BLU 18 amp wat PUZ T2154 SV RED use RED RED WHT GA WHT WHT VE ACL aS MC aie 1 2 2 Sz HAH o 1 Ff 4 RED 2 D to QA 4 WHT zu TABS e T EnS tc a FTT 1 MODEL SELECT The black square m indicates a switch position MODEL SW6 SW5 5 6 K2 r PUZ A24NHA4 A ms on a to 12345 8 123456 o PUY A2ANHAA c i a Rd nin 1234567 8 123456 al 5 amp gt 2 SW5 1 to 4 Function switch a z rh M NET ADAPTER 81 d g ce 4 SYMBOL NAME L1 L2 51 52 3 1g Terminal Block lt M net connection gt r CN5 Connector lt Transmission gt CND Connector lt Power Supply gt
201. tion of transmission connector CN2M of indoor unit Defective transmitting receiv ing circuit of indoor unit or LOSSNAY T lf displayed address or attribute is non existent The unit of former address does not exist as address Switch has changed while the unit was energized Abnormality is detected when indoor unit transmit ted because the address of FRESH MASTER and LOSSNAY are changed after sequential operation of FRESH MASTER and LOSSNAY by remote controller 44 Same as mentioned in 7 of the previous page Error Code Abnormal point and detection method Case Judgment and action M NET NO RESPONSE Transmitting condition is Check transmission waveform or noise on Abnormal if a message was transmitted repeated fault because of transmission wire and there were reply ACK that message noise and the like off the power supply of outdoor unit was received but response command Extension of transmission wire and indoor unit and FRESH MASTER or does not return Transmitting side detects voltage and signal is caused LOSSNAY at the same time for 2 minutes or abnormality every 30 seconds 6 times by over range transmission more and turn the power on again If mal continuously Te function was accidental the unit returns to Note The address and attribute displayed GE distance 200m normal If the same abnormality generates at remote controller indicate the con lt Remote control
202. tor fixing screws 3 Removing the electrical parts box 1 R th i See Figure 1 Photos emove the service panel See eom 2 Remove the top panel See Figure 1 oa 3 Disconnect the indoor outdoor connecting wire from termi nal block e 4 Remove all the following connectors from controller circuit board fan motor linear expansion valve thermistor lt Outdoor pipe gt thermistor lt Discharge gt thermistor lt Outdoor 2 phase pipe gt thermistor lt Outdoor gt high pressure switch low pressure switch 4 way valve coil Then remove a screw 4 x 8 from the valve bed to remove the lead wire Pull out the disconnected wire from the electrical parts box lt Diagram symbol in the connector housing gt Fan motor CNF1 CNF2 Electrical parts box Electrical parts box fixing screw Terminal block Linear expansion valve LEV A 1 Thermistor Outdoor pipe TH3 Thermistor Discharge TH4 Valve bed Thermistor Outdoor 2 phase pipe Outdoor TH6 7 High pressure switch 63H Compressor Low pressure switch 63L MC 4 way valve coil 2154 5 Remove the terminal cover and disconnect Terminal cover 6 Remove an electrical parts box fixing screw 4 x 10 and Screw detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 AAA Cover panel hook on the right Front EN d Cover panel fixing screws
203. ue to the work of protection device Postponement code is displayed while error is being postponed ON ON ON PIINIA OIN gt o 3 When the display blinks Inspection code is displayed when compressor stops due to the work of protection devices Display Contents to be inspected During operation U1 Abnormal high pressure 63H operated U2 Abnormal high discharging temperature shortage of refrigerant Open short circuit of discharge thermistor TH4 and shell thermistor TH32 U4 Open short of outdoor unit thermistors TH3 TH6 and U5 Abnormal temperature of heatsink U6 Abnormality of power module 08 Abnormality in outdoor fan motor UF Compressor overcurrent interruption VV hen Comp locked Inspection unit UH Current sensor error UL _ Abnormal low pressure 63L operated Outdoor unit UP Compressor overcurrent interruption Indoor unit 1 Abnormality of indoor units Indoor unit 2 Communication error of M NET system Contents to be inspected When power is turned on 63L connector red is open 63H connector yellow is open 2 connectors 63H 63L are open Indoor outdoor communication error Signal receiving error Outdoor unit Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive number of indoor units 4
204. umulator 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 8 Recover refrigerant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 accumulator leg fixing screws 4 x 10 Note Recover refrigerant without spreading it in the air Photo 11 Compressor MC Accumulator Accumulator leg Accumulator leg fixing screws s MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Copyright 2010 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Nov 2010 No OCH481 Made in Japan New publication effective Nov 2010 Specifications subject to change without notice
205. units or more Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection Startup time over Communication error except for outdoor unit SW2 setting Display detail The black square indicates a switch position Explanation for display Pipe temperature Liquid TH3 40 194 40 194 40 90 C When the coil thermistor detects 0 F or below and temperature are displayed by turns Example When 10 F 0 5 secs 0 5secs 10 2 secs Discharge temperature TH4 A42 Comp shell temperature TH32 A12 36 37 327 37 327 3 164 C When the discharge thermistor detects 100 F or more hundreds digit tens digit and ones digit are displayed by turns Example When 105 F 0 5 secs 0 5secs 1 gt 05 gt t 2 secs Output step of outdoor FAN 0 10 The number of ON OFF times of com pressor 0 9999 0 9999 When the number of times is 100 or more hundreds digit tens digit and ones digit are displayed by turns Example When 42500 times 425 x 100 times 0 5 secs 0 5secs 4 gt 25 gt 2 secs 100 times Compressor integrating operation times 0 9999 0 9999 When it is 100 hours or more hundreds digit tens digit and ones digit are displayed
206. uously after power supply 63H High pressure switch 63L Low pressure switch lt A42N only Disconnection or contact failure of connector 63H 63L on outdoor controller circuit board Disconnection or contact failure of 63H 63L 63H and 63L are operating due to defective parts Defective outdoor controller board Check connection of connector 63H 63L on outdoor controller circuit board Refer to 10 9 Check the 63H and 63L side of connecting wire Check continuity by tester Replace the parts if the parts are defective Replace outdoor controller circuit board Indoor outdoor unit connector miswiring excessive number of units 1 Outdoor controller circuit board can automatically check the number of connected indoor units Abnormal if the number cannot be checked automatically due to miswiring of indoor outdoor unit connecting wire and etc after power is turned on for 4 minutes Abnormal if outdoor controller circuit board recognizes excessive number of indoor units Contact failure or miswiring of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity 4 or more indoor units are connected to 1 outdoor unit Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more
207. uring defrosting and discharge temperature thermistor TH4 exceeds 110 C 230 F 2 Abnormal if discharge superheat Cooling TH4 TH5 Heating TH4 TH6 increases All the conditions in A or B are detected simultaneously for 10 minutes continu ously after 6 minutes past from com pressor start up including the thermo stat indication or recovery from defrost ing Condition A Heating mode When discharge superheat is less than 70 deg 126 F When the TH6 temp is more than the value obtained by TH7 5 deg 9 F When the condensing temp of TH5 is less than 35 C 95 F Condition B During comp operation Cooling and Heating When discharge superheat is less than 80 deg 144 F in cooling When discharge super heat is less than 90 deg 162 in heating When condensing temp of TH6 is more than 40 C 40 F In cooling only 3 Abnormal if comp shell temperature thermistor TH32 exceeds 125 C 257 F Overheated compressor opera tion caused by shortage of refrigerant Defective operation of stop valve 9 Defective thermistor Defective outdoor controller board Defective action of linear expansion valve 37 Check intake superheat Check leakage of refrigerant Charge additional refrigerant Check if stop valve is fully open Turn the power off and check if is dis played when the power is on again When U3 is
208. v 14 edid SYD uesa y y soopynosoopu le E S8JON JO Buum jddns Jamo UUS A xolg jeune SEU OPIS ieuw yeg 7 8 jpue iB i lt 9L LL ZL gt ZZE ERC 8 6 lt gt lt OES Seber Lez Os TUN WOOO uw on lt 8 EM gt 0LW og RIR 9 2 2 g elg aBseyosiq Jr A lt 961 gt S ler lt 8 9 2 gt 99 TRIN 0 ih Y EE Alo R la aoe Uf gie ARE g H 297 SSA Uy S 8 NollNaNno4 S Blo X B m GC S B g Xy SET dE re E lt oq gt PEE GEN lt 8 1 9 gt 521 lt 8 9 gt 009 lt 8 2 9 gt 9 1 3y ur jo uoneue dx3 ejduiexe seq smoys eu SNOLLO3HIG ONIMIM ONIdid 7 51108 NOILVONNOS 39VdS 39IAH3S Z un y 39vds 3384 15 7 WIRING DIAGRAM PUZ A18NHA4 PUZ A18NHA4 BS PUY A12 18NHA4 PUY A12 18NHA4 BS
209. ve 2 capacitor band fixing screws 4 x 10 and remove the capacitor The reactor and capacitor is attached to the rear of the electri cal parts box Photo 9 Reactor DCL Reactor zu fixing Screws Capacitor CE Electrical parts box Reactor fixing Screws Capacitor band fixing screws 119 OPERATING PROCEDURE PHOTOS 12 Removing the compressor MC 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Recover refrigerant 10 Remove the 3 points of the motor for compressor fixing nut using spanner or adjustable wrench 11 Remove the welded pipe of motor for compressor inlet and outlet and then remove the compressor Note Recover refrigerant without spreading it in the air Photo 10 Valve bed Separator Separator fixing screw Accumulator MC Compressor fixing nut 13 Removing the acc
210. ver panel See Figure 1 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screw 5 x 12 in the rear of the unit and then remove the right side panel 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Remove the thermistor Shell TH32 Refer to step 7 10 Recover refrigerant 11 Remove the 3 points of the motor for compressor fixing nut using spanner or adjustable wrench 12 Remove the welded pipe of motor for compressor inlet Photo 14 and outlet and then remove the compressor Compressor Compressor Accumulator fixing nuts MC Note Recover refrigerant without spreading it in the air 16 Removing the accumulator Photo 15 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 x 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Figure 1 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 x 12 in the rear of th
211. vice panel by pulling it downward See Photo 1 3 Remove the front panel fixing screws 4 x 10 5 from the front 2 from the right and 2 from the left side and detach the front panel 4 Remove the conduit cover and cord cover fixing screw 2 pcs 4 x 10 and detach the conduit cover and cord Grille 74 Fa Front panel A C N Service panel for charge plug Service panel cover See Photo 2 Photo 2 Cord cover 5 Remove the back panel fixing screws 4 x 10 4 from the right and 3 from the rear side and detach the back panel Conduit cover and cord cover fixing screws Conduit cover Photo 3 2 Removing the fan motor 1 Remove the top panel See Photo 1 2 Remove the front panel See Photo 1 3 Remove 1 nut M6 left screw and detach the propeller 4 Disconnect the connector CNF1 on the controller circuit board in the electrical parts box 5 Loosen the clamp for the lead wire in the motor support 6 Remove 4 fan motor fixing screws 4 x 18 and detach the fan motor See Photo 3 Nut Photo 4 Fan motor MF1 i Propeller Electrical parts box Fan motor fixing screws Motor support 106 OPERATING PROCEDURE PHOTOS 3 Removing the electrical parts box 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the front panel See Photo 1 4 Disconnect the indoor outdoor conne
212. wrong for S1 S2 S3 No display appears even when remote 3 gt er D a controller operation switch is turned on blinkalternately EASES Remote controller Short Operation lamp does not light up After startup is displayed only I Address is other than 0 green lights up lt 00 gt TE E Remote controller transmission wire is open Display appears but soon disappears After startup is displayed only After canceling function selection operation is not possible for even when remote controller is operated green lights up 00 about 30 seconds Normal After power is turned on PLEASE WAIT is displayed for 3 minutes then error code is displayed Press the remote controller s CHECK button twice to perform self diagnosis See the table below for the contents of LCD display Contents of inferior phenomena Contents of inferior phenomena P1 _ Abnormality of room temperature thermistor U1 UP Malfunction outdoor unit P2 Abnormality of pipe temperature thermistor Liquid F3 F9 Malfunction outdoor unit P4 Abnormality of drain sensor Float switch connector open E0 E5 Remote controller transmitting error P5 Drain overflow protection is working E6 EF Indoor outdoor unit communication error P6 Freezing overheating protection is working er
213. y PFC ACTM error Check CNAF wiring Undervoltage Defective ACTM P B Controller circuit board 04 20 Display examples for multiple errors Overvoltage 01 Undervoltage 02 03 Undervoltage 02 Power sync signal error 08 0A L phase open error 04 PFC error 10 14 83 The black square indicates a switch position SW2 setting Display detail Explanation for display Controlling status of compressor The following code will be a help to know the operating frequency operating status of unit The tens digit Compressor operating frequency control Primary current control Secondary current control The ones digit In this digit the total number of activated control is displayed Compressor operating frequency control Preventive control for excessive temperature rise of discharge temperature Preventive control for excessive temperature rise of condensing temperature Frosting preventing control Preventive control for excessive temperature rise of heatsink Example The following controls are activated Primary current control Preventive control for excessive temper ature rise of condensing temperature Preventive control for excessive temper ature rise of heatsink Code display 84 11 EASY MAINTENANCE FUNCTION Reduces maintenance work drastically Enable
214. y 3 last but one Code displayed if no postponement code is present 98 2 8 we 5 Request content Desoription Unit Remarks Display range 103 Error history 1 latest Displays error history is displayedif nohistory is present Code 104 Error history 2 second to last Displays error history is displayedif no history is present Code 105 Error history 3 third to last Displays errorhistory is displayedif no history is present Code 3 TH3 Sd Abnormal thermistor display 5 M Sensor TH3 TH6 TH7 TH8 n et number 0 No thermistor error 107 Operation mode at time of error Displayed in the same way as request code 0 108 Compressor Operating current at time of error 0 50 A 109 Compressor Accumulated operating time at time of error 0 9999 10 hours 110 Compressor Number of operation times at time of error 0 9999 100 times 111 Discharge temperature at time of error 37 327 F 112 Outdoor unit Liquid pipe 1 temperature TH3 at time of error 40 194 SE 113 Outdoor unit Liquid pipe 2 temperature at time of error 40 194 F 114 Outdoor unit 2 phase pipe temperature TH6 attime oferror 38 190 sp 115 116 Outdoor unit Outside air temperature TH7 at time of error 38 190 SF 117 Outdoor unit Heatsink tempe

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