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PEAD-A~AA5 Service Manual

1. E 5 50 di 10 201 rA OEO ai ioi l O NEG 0 0 49 15 20 25 30 853 530 706 883 1059 Airflow rate m3 min cfm External static pressure 150Pa 208 230V 60Hz 200 08938 3 3 3 1 j sm NTC MEE NN UE UIN A RENE uu ur rms Pas ME E E E MAN uU i ME E imm a a oe aiu eM a ee P Rated point 125 P T NITE ves z r MO MU MEC cd l SSW K SS D q E c M E s NC NER AM n MEC Middle 2 D 100 amp 0 401 T UE e ee D deee4eeeb esdeexeeeedeesedeee BeeebBbee bhbee 6 X X Amebeee 64eeed4eRBee Bae 8 2 xt IP Cr E MR MM NNNM E WEN S Zl 22 S 50 0 01 15 20 25 30 853 530 706 883 1059 Airflow rate m3 min cfm PEAD A36AA5 External static pressure 35Pa 208 230V 60Hz External static pressure Pa in WG 70 0 281 60 flere bok oh cs 0 241 50 0 201 40 0 161 30 0 120 20 1 High 0 080 10 0 040 0 0 49 353 15 530 PEAD A36AA5 External static External static pressure Pa in WG pressure 20 706 883
2. Shee ee qui See PEAD A24AA5 External stat External static pressure Pa in WG 90 0 361 80 0 321 70 0 281 60 0 241 50 0 201 40 0 161 30 0 120 20 0 080 10 0 040 0 0 49 353 SS ILL a ulla 20 353 530 706 Airflow rate m3 min cfm ic pressure 70Pa 208 230V 60Hz Hio cpu pedis id seite quete 7 r 1 C 14 niic celo paises iier aerate B B 4 4 Rated point eee doe cee eb ee sie eee d meedeemskezakhecz iN Middle niniak ainn aA nasia eee Mp gne em pete 4 1 1 d 530 706 Airflow rate m3 min cfm 883 PEAD A24AA5 External static pressure 100Pa 208 230V 60Hz 150 _ em i EN p QS OM SrA genie TE 4 L senp dun cL Z LM gt DNE z E ed MM c um iai point 0 401 D 5 U mM M E OM NE g Lo High j M C UR a E EE E
3. Fig 1 Fig 2 2 Thermistor Intake air ia O O gt O X Q c O gt ER procedure in section 1 1 Pull out the thermistor holder and thermis B tor C on the control box N m w Fig 3 35 Exercise caution when removing heavy parts 3 Drainpan 1 Removing the filter and the bottom plate 1 Push up the tab on the filter and pull out the filter in the direction of the arrow 1 2 Remove the fixing screws on the bottom plate D E to remove it eTighten screws to a torque of 1 4 0 2 N m 2 Removing the drainpan 1 Pull out the drain pan in the direction of the arrow 2 Note eDrain the water out of the drain pan before removing it Fig 5 36 Exercise caution when removing heavy parts 4 Thermistor Condenser evaporator Liquid pipe 1 Remove the drain pan according to the proce dure in section 3 2 Removing the Heat exchanger cover 1 Remove the four fixing screws on the heat e Tighten screws to a torque of 1 40 2 N m exchanger cover F to remove it 3 Removing the thermistor 1 Remove the thermistor w 2 E ie Q gt
4. d Room temperature setting Set temp 1 8F 1C Set temp 4 5F 2 5C Heater output FL ON OFF Heater OFF Inlet air temp gt set temp Heater ON Inlet air temp lt set temp 1 8 F 1 C The fan will drive ant the heater will turn on when DEFROST or ERROR is displayed Set temp Inlet air temp Room temperature setting Set temp 1 8F 1C Heater output ON OFF Heater OFF Inlet air temp gt set temp Heater ON Inlet air temp set temp 2 7 F 1 5 C The fan will drive ant the heater will turn on when DEFROST or ERROR is displayed Set temp Room temperature setting Inlet airtemp _ Set temp 1 8F 1C Set temp 2 7F 1 5C Heater output Inlet air temp gt set temp 1 8 F 1 C Heater ON Inlet air temp set temp 3 6 F 2 C The fan will drive ant the heater will turn on when DEFROST or ERROR is displaved Set temp Room temperature setting Inlet air temp Set temp 1 8F 1C Set temp 3 6F 2C Heater output 1 ON OFF Inlet air temp set temp 1 8 F 1 C Heater ON Inlet air temp set temp 4 5 F 2 5 C The fan will drive ant the heater will turn on when DEFROST or ERROR is displayed Set temp Room temperature setting Inlet air temp Set temp 1 8F 1C Set temp 4 5F 2 5C Heater output ON L L _ OFF 1st Heater output from CN24 1 yellow on the indoor unit control board 2nd Heater output from CN24 2 blue
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6. 25 3 883 0 1059 Airflow rate m3 min cfm 35 1236 40 1412 530 15 20 706 25 883 30 1059 Airflow rate m3 min cfm 35 1236 1412 40 45 1589 PEAD A42AA5 External static pressure 35Pa 208 230V 60Hz External static pressure Pa in WG 70 0 281 60 0 241 50 0 201 40 0 161 30 0 120 20 0 080 aod hod b mos Sb bes chow bes sto eh CENE eet Me cn Middle eM e S ha Q pue point 4 rp 4a r ee oe 1 10 0 040 0 45 530 4 2 706 1 4 0 PEAD A42AA5 External static pressure 50Pa 208 230V 60Hz External static pressure Pa in WG 100 0 401 90 25 883 30 1059 Airflow rate m3 min cfm 35 1236 No 40 1412 0 361 80 e d BARAT 0 321 70 L e Drs s L Se E Ese bra SORTE TOPE edes 0 281 60 0 241 50 4 a e s Middle r a r i 0 201 40 G la
7. E ctii sd ce ele Ma BERES amit 1 1111 m 7 Pc i i 124 BEN es ee ee X3 x 150 t ioh tt 0602 High NN 5 4 loce aoe i LLLA Eta NEN lt Po ae ee A te ee Sak g s EI AMAT 2 pd Middle 100 L ri Rated point a 0401 4 N AR a rV 9 pulum deum cm nn d a omm hs mmm mum moule em bo ole 2 uod Sun pine SEE Sr N s 4 S 2 q fd pu re Co NIST aue P 5 CE EN s Low p fr de 429 ku NES Mi a NEM NER SMS 50 0 201 0 0 15 20 25 30 35 40 45 530 706 883 1059 1236 1412 1589 Airflow rate m8 min cfm External static pressure 150Pa 208 230V 60Hz 250 7 1 004 por T n NW Mw ndi dE EIE 2 e aes us Ge ak S d e pee 2 20 RMpeHRHeRMeHeHpeHres uie Locos p uL uu 2 ENTIA EN EE High a 0 803 ce Limit 4 idR er oe i e 5 ile d aces biri is m ea m uc ee ae M iac du K wu E rm 1 1 1 1 1 1 1 a 150 4 i Rat int e 0 602 perf URN NE
8. cio oe el ee ee 9 i S L 8 CAFE IRSE Nn Wl CL NN UN 9 50 0 0 201 4 Low 0 0 49 15 20 25 30 353 530 706 883 1059 Airflow rate m3 min cfm External static pressure 150Pa 208 230V 60Hz 200 MEE 0 803 J 1 1 1 AN DES NE GE ME NN 5 UE E c fe 150 Limit 4 een 0 602 4 2 De ow 4 oa b 34 1 b b ima U High e Il Gs fae E 1 T T E UNUS lage NE o TOME We C 10 gt amp 0 401 rw s MEN M E E Middle in c cm ELTE NEM nM 5 NN NUN E o E 50 207 3 1 Ne Low 0 0 49 15 20 25 30 353 530 706 883 1059 Airflow rate m3 min cfm PEAD A30AA5 sure 35Pa 208 230V 60Hz External static pres External static pressure Pa in WG 70 0 281 RB 4 4 60 0 241 50 0 201 40 r J 4 4 t r 0 161 30 0 120 20 S penc c eS e 0 080 0 040 eise aici ae Raila pm mm
9. ee SN LN REM ui CM g ppt US gi Middle tp ET ONES eee EUN RE UNT 1 1 1 9 EE COURONNE OR IUE E E E LUN S 4 b 1 100 34 0401 Vat oe 1 siis a s MN n gt idee usa Suma Rose Qata Sao usuta S3E S su co kapatu uo oas Sp sess kahan ci SS usss s S Wu 50 on MM REN E ONCE UN am es iki iM 0 15 20 25 30 35 40 45 530 706 883 1059 1236 1412 1589 Airflow rate m8 min cfm PEAD A24 30 36 42AA5 Air filter 208 230V 60Hz External static pressure Pa in WG 15 0 060 10 A36 42 0 040 A24 30 5 0 020 0 o 0 10 353 20 30 706 1059 Airflow rate m3 min cfm 40 1412 10 5 SOUND PRESSURE LEVELS 5 1 Sound pressure level Ceiling concealed Aus duet Measurement location 5 2 NC curves PEAD A24AA5 258 External static pressure 0 14 in WG 35Pa m External static pressure 0 40 in WG 100Pa bo igh F w 65 0 65 0 wm wa 00 60 0 60 0 s Oo NC 60 NC 60 2 550 2
10. ri eA m s js m rr Me 20 25 30 706 1059 Airflow rate m3 min cfm PEAD A30AA5 External stat External static pressure Pa in WG ic pressure 50Pa 20 8 230V 60Hz 90 7 60 0 241 50 0 201 40 Rated poin 0 161 30 0 120 20 0 080 10 0 040 0 0 49 353 15 530 20 25 30 706 883 1059 Airflow rate m3 min cfm PEAD A30AA5 External static pressure 70Pa 208 230V 60Hz External static pressure Pa in WG 100 0 401 90 0 361 80 0 321 70 0 281 60 0 241 50 0 201 40 0 161 30 0 120 20 0 080 10 0 040 0 0 49 353 706 Airflow rate m3 min cfm 883 1059 PEAD A30AA5 External static pressure 100Pa 208 230V 60Hz 150 _ E lt ld i E QE a 6 dc S LE A GSS SE ME KK SS SR SE Sis e 2 n E High 101 a i i i i f S 190 4 amp 0 401 MN 6 E ELE NT NE n NE NO E 00101 14 2 EE ge uas we EE E 5 b 0004 4 he S 2 Kap 1
11. eoeds sseooe 4 os JOOPU eui JO eis uore ejsul ue 1599 9S S eM y JO euo ul 211199 9 pue JeDueuoxe yeay 3y pue uornoedsur eoueuejureui JO o eoeds ssoooe ooeds ssoooe eoueueijureJN Z 100p Sseooy 16 f WIRING DIAGRAM PEAD A24 30 36 42AA5 BLUE SW1 CN3C swe OFF Nsw SW5 ON BLACK CN2C CN44 CN4F D m g Q Z m 2 BLUE CN24 2 z CO m 5 RED CN105 1 e LED2 BLACK CN2A oo 9990 CN51 CNXB2 RED N2L LED1 BLUE CNX CN24 1 DC280 340V RECTIFIER CIRCUIT TRANSMISSION WIRES cus TB15 DC12V TB6 1 itt 41 l H LF IT 1 2j I 4 s RB A TO OUTDOOR UNIT E o ae E 79 EN oO i oo O K sb SW1 sw27 t jt WB TH5 FS TH4 DRAINPUMP FAN MOTOR SYMBOL EXPLANATION SYMBOL NAME SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD INDOOR CONTROLLER BOARD TB4 TERMINAL BLOCK CN24 1 CONNECTOR HEATER CONTROL 187 SW1 SWITCH FOR MODEL SELECTION INDDOR OUTDOOR CONNECTING LINE CN24 2 CONN
12. 30 0 25 0 20 0 15 0 mo audible limit on 117 continuous noise 5 0 Approximate minimum 250 500 1k 2k Octave band center frequencies Hz 70 0 NC 20 External static pressure 0 28 in WG 70Pa 65 0 60 0 55 0 50 0 P 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 audible limit on 772 continuous noise Approximate minimum 5 0 0 0 63 125 250 500 1k 2 k 4k 8k Octave band center frequencies Hz NC 40 NC 30 12 20uPa Octave band pressure level dB OdB 20yPa Octave band pressure level dB OdB 70 0 65 0 60 0 55 0 50 0 45 0 40 0 Z 35 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 70 0 65 0 60 0 55 0 50 0 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 External static pressure 0 40 in WG 100Pa audible limit on 111 continuous noise E Approximate minimum 2 50 500 1 k 2k Octave band center frequencies Hz External static pressure 0 60 in WG 150Pa audible limit on continuous noise L Approximate minimum 2 50 500 1 k 2k Octave band center frequencies Hz 20yPa Octave band pr
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14. Q Q O O C L D O Condenser evaporator Thermistor size Liquid pipe o8mm 37 n Exercise caution when removing heavy parts 5 Fan and fan motor 1 Removing the filter and the bottom plate 1 Push down the tab on the filter and pull out the filter in the direction of the arrow 1 1 2 Remove the fixing screws on the bottom plate J to remove it e Tighten screws to a torque of 1 4 0 2 N m V L 7 u O Fig 8 2 Removing the fan casing bottom half 1 Squeeze the tabs on the fan casing to remove it in the direction of arrow 2 3 Removing the motor cable 1 Remove the motor cable threw the rubber bush 4 Removing the fan motor and the Sirocco fan 1 Remove the two motor fixing screws to remove the motor and the Sirocco fan in the direction of arrow 3 e Tighten screws to a torque of 3 5x0 2 N m 2 Remove the four fan case fixing screws to take the top half of the fan casing off e Tighten screws to a torque of 1 4 0 2 N m Exercise caution when removing heavy parts 6 Heat exchanger 1 Remove the drain pan according to the proce dure in section 3 2 Remove the heat exchanger cover according to the procedure in section 4 2 3 Removing the cover 1 Remove the five fixing screws on the cover K to remove it e Tighten screws to a torque of 2 0x0 2 N m 4 Removing the Heat exchanger 1 Remove the fix
15. Remote controller control board Defective remote controller Replace remote controller Abnormal if data cannot be read normal ly from the nonvolatile memory of the E1 remote controller control board Error code E1 Or E2 Abnormal if the clock function of remote controller cannot be operated normally Error code E2 Water leakage Mis piping of extension pipes OCheck the extension pipes for mis piping This detection is performed during the When connected with multiple operation stop heating fan or error stop units mode etc other than cooling and dry When a and b are found water leakage Mis wiring of indoor outdoor Check the Indoor outdoor unit connecting OCCUIS unit connecting wire When wire for mis wiring a Pipe liquid temperature inlet tem connected with multiple units perature 10 C for 30 minutes b When drain float switch is detected to Detection failure of the indoor Check room temperature display on remote be soaked in the water for 15 minutes unit inlet pipe liquid thermis controller and indoor pipe liquid tempera or more tor ture Refer to the countermeasure on P2 When drain float switch is detected to be NOT soaked in the water each Drain pump failure Check if drain up machine works counting of a and b is cleared amp Drainage failure When this error is detected the error Clogged drain pump Check drain function will not be reset until the main power is
16. 1 Wye ae 25 30 1059 Airflow rate m3 min cfm 50Pa 208 230V 60Hz 35 1236 40 1412 100 0 401 T 90 0 361 80 0 321 70 0 281 60 Lid EE 0 241 50 Lic TET FER ETA SETE DF 0 201 40 0 161 0 120 20 30 yo Low LL NC cs ka shes 0 080 10 0 040 0 0 353 15 530 7 PEAD A36AA5 External static pressure 70Pa 208 230V 60Hz External static pressure Pa in WG 150 20 06 25 883 30 1059 Airflow rate m3 min cfm 35 1236 40 1412 45 0 602 100 0 401 50 p Rated point i i 0 201 353 530 15 2 3 706 P AE 883 30 1059 Airflow rate m3 min cfm 35 40 1236 1412 45 45 1589 1589 1589 PEAD A36AA5 External static pressure 100Pa 208 230V 60Hz External static pressure Pa in WG 150 0 602 100 0 401 50 0 201 353 PF F r oie shows eise s s its b 4todexduccmcLeBeaceecacL m zuo es dices edis usu has 1 Middle 1 15 530 PEAD A36AA5 External static pressure 150Pa 208 230V 60Hz External static pressure Pa in WG 200 0 803 150 0 602 100 0 401 50 0 201 20 706
17. 32ft For relay X use the specifications given below Operation coil Rated voltage 12VDC Power consumption 0 9W or less Use the diode that is recommended by the relay manufacturer at both ends of the relay coil The length of the electrical wiring for the PAC YU25HT is 2 meters 6 1 2 ft To extend this length use sheathed 2 core cable Control cable type CVV CVS CPEV or equivalent Cable size 0 5 mm 1 25 mm 16 to 22 AWG Don t extend the cable more than 10 meters 32ft Recommended circuit 1 phase s power supply 208V 230V 60Hz R Wiring diagram s 9 FS1 2 Thermal fuse H1 H2 Heater 26H Overheat protection thermostat Control board I 88H Electromagnetic contactor 4 Wiring restrictions Keep the length of the cable connecting to the circuit board of the indoor unit shorter than 10 meters 32ft Longer than 10 meters 32ft could cause improper operation Use a transit relay when extending wiring such as remote wiring 21 10 1 CAUTIONS ON TROUBLESHOOTING 1 Before troubleshooting check the followings D Check the power supply voltage 2 Check the indoor outdoor connecting wire for mis wiring 2 Take care the followings during servicing D Before servicing the air conditioner be sure to turn off the remote controller first to stop the main unit and then turn off the breaker Whe
18. Clogged drain pipe PA reset 2500 Drain float switch failure Check drain float switch Refer to the coun Drain float switch is detected termeasure on P4 and P5 to be soaked in the water ON status due to the operation failure of the moving parts Contact failure of drain float switch connector Loose connector 28 SS 10 4 TROUBLESHOOTING BY INFERIOR PHENOMENA Note Refer to the manual of outdoor unit for the detail of remote controller Phenomena Cause Countermeasure 1 LED2 on indoor controller board When LED1 on indoor controller board is also off is off Power supply of rated voltage is not supplied to out Check the voltage of outdoor power door unit supply terminal block L N or Ls N e When AC 208 230V is not detected Check the power wiring to outdoor unit and the breaker e When AC 208 230V is detected Check below 2 Defective outdoor controller circuit board 2 Check the voltage between outdoor terminal block 51 and S2 e When AC 208 230V is not detected Check the fuse on outdoor controller circuit board Check the wiring connection e When AC 208 230V is detected Check below Power supply of 208 230V is not supplied to indoor Check the voltage between indoor terminal unit block S1 and S2 e When AC 208 230V is not detected Check indoor outdoor unit connecting wire for mis wiring e When AC 208 230V is detected Check below Defective indoor
19. MITSUBISHI Changes for the Better A ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS 2014 R410A SERVICE MANUAL Ceiling Concealed Model name or unit Indo gt PEAD A24AA5 PEAD A30AA5 PEAD A36AA5 PEAD A42AA5 INDOOR UNIT SLIM CONTENTS I SAFETY PRECAUTION suse au u kv E WS Orid atn edad qaia aded tania 6d 2 2 PART NAMES AND FUNCTIONS smtp sumat isa cum 3 3 SPECIFICATION RE LE TUER TESI Ihe ouod tor AVR d PRU ET 4 4 FAN PERFORMANCE AND CORRECTED AIR FLOW 6 5 SOUND PRESSURE LEVELS unu usa Ro Es m 11 6 OUTLINES amp DIMENSIONS E Vp EFE l YR Ra Ka PX Ya 15 WIRING DIAGRA M udis De iu 17 8 REFRIGERANT SYSTEM DIAGRAM 18 HEATER CONTROED tama 19 TROUBLESHOOTING uuu uu nt 2212 22 41 DISASSEMBLY PROCEDURE rne L 35 1 SAFETY PRECAUTION 1 1 ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal all supply circuits must be disconnected 1 2 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilising refrigerant R410A Use new refrigerant pipes In case of using the existing pipes for R22 be careful with the followings For A36 and A42 be sure to perform replacement oper ation before test run
20. is out of cooling range Note 1 It takes at least 9 minutes to detect Note 2 Abnormality P8 is not detected in drying mode Cooling range 3 deg C 5 4deg F TH TH1 TH Lower temperature between liquid pipe temperature TH2 and con denser evaporator temperature TH5 TH1 Intake temperature Heating mode 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 heating 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 defrost ing mode is over Heating range deg C 5 4deg F TH5 TH1 Cooling or drying mode D Clogged filter reduced airflow 2 Short cycle of air path Low load low temperature operation beyond the tolerance range Defective indoor fan motor e Fan motor is defective e Indoor controller board is defective Cooling or drying mode Check clogging of the filter Remove shields Refer to 10 8 DC Fan motor FAN MOTOR INDOOR CONTROLLER BOARD Check outdoor fan motor Q Check operating condition of refrigerant circuit Defective outdoor fan control Overcharge of refrigerant Defective refrigerant circuit clogs Heating mode D Clogged filter reduced airflow Short cycle of air path Over loa
21. 33 SS 10 9 FUNCTIONS OF DIP SWITCH AND JUMPER WIRE Each function is controlled by the dip switch and the jumper wire on control p c board SW1 and SW2 are equipped only for service parts Model setting and capacity setting are memorized in the nonvolatile memory of the control p c board of the unit Marks in the table below Jumper wire O Short X Open For service board SW1 Model settings Capacity settings PEAD A42AA5 Settings at time of factory shipment par number sepo oea Pop Seg oraa POE O r holi 4 and J42 air number ontro I or bo an setting with Ru Four pair number settings are supported wireless The pair number settings of the wireless remote remote controller and indoor control PCB J41 J42 are controller given in the table on the left x in the table indicates the jumper line is disco nnected Unit type There is no jumper JP1 because these models setting Without THS O have the cond eva temperature thermistor TH5 With TH5 X Indoor controller Indoor controller board type JP3 board type Factory shipment setting Service parts 34 11 DISASSEMBLY PROCEDURE Exercise caution when removing heavy parts PEAD A24AA5 PEAD A30AA5 PEAD A36AA5 PEAD A42AA5 1 Control box 1 Removing the control box cover A 1 Remove the two fixing screws on the cover to remove it 2 N I Tighten screws to a torque of 2 0
22. Change flare nut to the one provided with this product Use a newly flared pipe Avoid using thin pipes Make sure that the inside and outside of refrige rant piping is clean and it has no contamination such as sulfur hazardous for use oxides dirt shaving particles etc In addition use pipes with specified thickness Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc Store the piping to be used indoors during installation and both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Use ester oil ether oil or alkylbenzene oil small amount as the refrigerant oil applied to flares and flange connections If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc 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 1 Cautions for service Do not use refrigerant other than R410A 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 deterior
23. controller board 4 Check the fuse on indoor controller board Check the wiring connection If no problem are found indoor controller board is defective 2 LED2 on indoor controller board When LED1 on indoor controller board is also blinking Check indoor outdoor unit connecting wire is blinking Connection failure of indoor outdoor unit connecting for connection failure wire e When LED 1 is lit Mis wiring of remote controller wires D Check the connection of remote con Under twin triple indoor unit system 2 or more indoor troller wires in case of twin triple indoor units are wired together unit system When 2 or more indoor units are wired in one refrigerant system connect remote controller wires to one of Refrigerant address for outdoor unit is wrong or not those units set 2 Check the setting of refrigerant address Under grouping control system there are some units in case of grouping control system whose refrigerant address is O If there are some units whose refrigerant addresses are 0 in one group set one of the units to 0 using SW1 3 6 on outdoor Short cut of remote controller wires controller circuit board Defective remote controller 30 Remove remote controller wires and check LED2 on indoor controller board e When LED is blinking check the short cut of remote controller wires e When LED is lit connect remote controller wires again and if LED2 is blinking remote controller is defective
24. has restored after power failure then the unit will restart automatically Set the AUTO RESTART FUNCTION using the wireless remote controller Mode no 1 24 SS 10 3 SELF DIAGNOSIS ACTION TABLE Note Refer to the manual of outdoor unit for the details of display such as F U and other E Room temperature thermistor TH1 D The unit is in three minute resume prevention mode if short open of thermistor is detected Abnormal if the unit does not reset normally after three minutes The unit returns to normal operation if it has normally reset 2 Constantly detected during cooling drying and heating operation Short 90 C 194 F or more Open 40 C 40 F or less board Pipe temperature thermistor Liquid TH2 D The unit is in three minute resume prevention mode if short open of thermistor is detected Abnormal if the unit does not reset normally after three minutes The unit returns to normal operation if it has normally reset Constantly detected during cooling drying and heating except defrosting operation Short 90 C 194 F or more Open 40 C 40 F or less Contact failure of drain float switch CN4F D Extract when the connector of drain float switch is disconnected and of connector CNAF is not short circuited 2 Constantly detected during operation board Drain overflow protection operation D Suspensive abnormality if drain float switch is detected to be underwater f
25. if LED2 is lit connection failure of remote controller terminal block etc has returned to normal 29 SS 10 5 TEST POINT DIAGRAM 10 5 1 Power supply board PEAD A24AA5 PEAD A30AA5 PEAD A36AA5 PEAD A42AA5 CND Power supply voltage 208 230VAC CNMF Fan motor output 1 4 310 340 VDC 5 4 15 VDC 6 4 0 6 5 VDC 7 4 Stop 0 15 VDC 7 5 0 15 pulse Drain up mechanism output 208 230VAC CNXA1 Connect to the indoor controller board CNXB1 Connect to the indoor controller board CNXC1 Connect to the indoor controller board CNXA2 Connect to the indoor power board CNXB2 Connect to the indoor power board CNXC2 Connect to the indoor power board Au Vra Voltage on the side of PC51 and C25 Same with the voltage between 7 and 4 of CNMF Vcc Voltage between the C25 pins 15 VDC Same with the voltage between 5 and 4 of CNMF Vsp Voltage between the C53 pins OVDC with the fan stopped 1 6 5VDC with the fan in operation Same with the voltage between 6 and 4 of CNMF 30 SS 10 5 2 Indoor controller board PEAD A24AA5 PEAD A30AA5 PEAD A36AA5 PEAD A42AA5 CN105 CN41 SWE SW1 SW2 27775 GN We 1 Reflow DIP T331 T M I E j m n ur J esl Kc i ey s CN100 1 Bg ge Eres CN25 _ CET BLU BLK CN24 3g viis BE CN2C 7CN2
26. in WG 50Pa Approximate minimum audible limit on 117 continuous noise 250 500 1k 2k Octave band center frequencies Hz External static pressure 0 28 in WG 70Pa NC 40 NC 30 Approximate minimum audible limit on 772 continuous noise 63 125 250 500 1k 2 k 4k 8k Octave band center frequencies Hz 14 20uPa Octave band pressure level dB OdB 20yPa Octave band pressure level dB OdB 70 0 65 0 60 0 55 0 50 0 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 70 0 65 0 60 0 55 0 50 0 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 External static pressure 0 40 in WG 100Pa audible limit on 111 continuous noise L Approximate minimum 250 500 1 k 2k Octave band center frequencies Hz External static pressure 0 60 in WG 150Pa L Approximate minimum audible limit on 117 continuous noise 250 500 1 k 2k Octave band center frequencies Hz ureip Apne C I eead O edid 9U L T1 9SE N IA 9pIS Buldid 99Jnos Jewog xool q eUu 29 9e o la 8 6 o S UOISSIUISUEJ
27. on the indoor unit control board Refer to the Installation Manual for function settings Heater OFF 2 2 19 5 9 2 FAN CONTROL By setting the Mode No 23 in the Function Table in section 9 1 to 2 and using CN4Y on the optional parts PAC YU25HT the following patterns of fan control will become possible when DEFROST or ERROR is displayed Fan control patterns when DEFROST or ERROR is displayed E Heater is installed in the duct No heater is installed in the duct Use of CN4Y PAC YU25HT Heater is off Fan ON 1 Fan OFF While the heater is on the fan will operate at high speed regardless of the fan setting on the remote controller except when the unit is operated in the DEFROST mode or when the unit is in error AN f a heater is installed in the duct do not use CN4Y By doing so the fan will turn off when the heater is on which may result in fire 1 Fan speed setting Settin wasa Heating Thermo OFF DEFROST or ERROR Fan control _ 1 O Remote controller setting Remote controller setting 5 83 Refer to the Installation Manual for function settings 9 3 PAC YU25HT OPTIONAL PARTS INSTALLATION The following section describes installation of the External Heater Adapter that connects to PEAD A AA5 series indoor unit This products is the special wiring parts to drive an electric heater with the air conditioner 1 Parts list Check that the follow
28. 0 ce F audible limit on z z audible limit da inel ine zc 7 7 continuous noise 50 17 continuous noise 0 0 63 125 250 500 1k 2k 4k 8k 63 125 250 500 1k 2k 4k 8k Octave band center frequencies Hz Octave band center frequencies Hz T External static pressure 0 28 in WG 70Pa 65 0 wm Middle 60 0 NC 60 55 0 20uPa 50 0 EE s S gt x E NC 50 45 0 40 0 SOON DUUM a M T NC 40 35 0 30 0 NC 30 25 0 20 0 Octave band pressure level dB OdB NC 20 15 0 L Approximate minimum audible limit on 211 continuous noise 10 0 5 0 63 125 250 500 1k 2k 4k 8k Octave band center frequencies Hz 11 20 Octave band pressure level dB OdB 20 Octave band pressure level dB OdB 20 Octave band pressure level dB OdB PEAD A30AA5 External static pressure 0 14 in WG 35Pa 65 0 60 0 55 0 50 0 P 45 0 40 0 35 0 30 0 25 0 20 0 15 0 ne audible limit on 772 continuous noise Approximate minimum 5 0 0 0 63 125 250 500 1k 2k 4k Octave band center frequencies Hz 70 0 65 0 NC 40 NC 30 NC 20 8k External static pressure 0 20 in WG BOPa 60 0 55 0 50 0 45 0 40 0 35 0
29. 20 0 15 0 10 0 5 0 70 0 65 0 60 0 55 0 50 0 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 5 0 External static pressure 0 40 in WG 100Pa High Approximate minimum 4 gt audible limit on 772 continuous noise 250 500 1 Octave band center fre k 2k quencies Hz External static pressure 0 60 in WG 150Pa audible limit on 77 continuous noise Approximate minimum 5 250 500 1 k 2k Octave band center frequencies Hz 20 Octave band pressure level dB OdB 20 Octave band pressure level dB OdB 20 Octave band pressure level dB OdB PEAD A42AA5 65 0 60 0 55 0 50 0 P 45 0 40 0 E 35 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 70 0 65 0 60 0 55 0 50 0 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 5 0 70 0 65 0 60 0 55 0 50 0 P 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 5 0 0 0 External static pressure 0 14 in WG 35Pa NC 40 NC 30 Approximate minimum audible limit on 772 continuous noise 63 125 250 500 1k 2k 4k 8k Octave band center frequencies Hz External static pressure 0 20
30. 4 1 iu mj 25 ws jist ter g 1 T o a ES v Ur ie H 828 31 CN51 CN2L SWE SW1 Emergency operation Model selection SW2 Capacity setting CN105 Radio frequency interface CN32 Remote start stop adapter CN22 For MA remote controller cable con nection 10 18 VDC Between 1 and 3 CN51 Centralized control CN41 JAMA standard HA terminal A CN44 Thermistor liquid condenser evaporator temperature CN4F Float thermistor CN20 Thermistor Inlet temperature CN24 Heater control 12VDC CNAY For fan control CN3C Indoor outdoor transmission 0 24VDC CN90 Wireless remote controller CNXA2 Connect to the indoor controller board CNXB2 Connect to the indoor controller board CNXC2 Connect to the indoor controller board CNXA1 Connect to the indoor power board CNXB1 Connect to the indoor power board CNXC1 Connect to the indoor power board Ss 10 6 TROUBLE CRITERION OF MAIN PARTS PEAD A24AA5 PEAD A30AA5 PEAD A36AA5 PEAD A42AA5 Check method and criterion Room temperature Measure the resistance with a tester a Part temperature 10 C 50 F 30 C 86 F Pipe temperature r thermistor liquid 4 3kQ 9 6kQ Opened or short circuited TH2 Condenser evaporator temperature thermistor TH5 Wiring diagram Vm Power supply for motor Vcc Power supply for control Vsp Speed command voltage
31. 550 q q SEIN m 50 0 m 50 0 P 8 B SRG e uu NC 50 ps NC 50 m 45 0 m 45 0 B e 9 40 0 40 0 E 40 Lu NC 40 5 350 5 350 O 2 ON eT 4 eae ee qasa M ee RC Sica chi tell amp 30 0 amp 30 0 NC 30 E NC 30 S 25 0 5 25 0 qtu R lle eo o su e SENE TO o a wong a ee 5 20 0 5 20 0 o NC 20 o NC 20 15 0 15 0 J isis Approximate minimum M N MUM 9 2 o t ssi 10 0 uM 10 0 i i r audible limit on L IL audible limit on 25 Lp ES continuous noise a cccoctccce 111 continuous noise Rec c 0 0 63 125 250 500 1k 2k 4k 8k 63 125 250 500 1k 2k 4k 8k Octave band center frequencies Hz Octave band center frequencies Hz External static pressure 0 20 in WG BOPa External static pressure 0 60 in WG 150Pa pou c e ee S 65 0 65 0 60 0 60 0 DA Es N NC 60 1 NC 60 E 55 0 D 550 eo q q m 50 0 m 50 0 P ke 2 NC 50 NC 50 m 45 0 m 45 0 9 40 0 400 NC 40 40 5 35 0 5 35 0 no o o a 30 0 a 30 0 NC 30 g NC 30 S 250 S 250 8 5 20 0 5 20 0 9 NC 20 9 NC 20 15 0 15 0 k A a 12 Approximate minimum lt Approximate minimum e ee 10
32. 8 42 34 39 43 36 40 44 38 42 45 in Dimensions in INDOOR UNIT 732 28 718 250 9 7 8 kg bs 39 86 Power supply phase cycle voltage 2 80 External static pressure in WG 35 50 70 100 150 0 14 0 20 0 28 0 40 0 60 Sound pressure level 35Pa 0 14 in WG 36 40 44 Low Mid High 50Pa 0 20 in WG 36 40 44 70Pa 0 28 in WG 36 41 45 100Pa 0 40 in WG 37 43 46 150Pa 0 60in WG 39 44 47 Dimensions D mi X J 94 732 878 XA J a z 2 oc lt 4 FAN PERFORMANCE AND CORRECTED AIR FLOW PEAD A24AA5 External static pres External static pressure Pa in WG 60 0 241 50 0 201 40 0 161 30 0 120 20 0 080 10 0 040 sure 35Pa 208 230V 60Hz epe Se aS mela eek eo ei dis ate INN ec Ae eS ae eed eum a ee uc Sree ee E pees peep ee Wes 4 4 PEAD A24AA5 External static p External static pressure Pa in WG 70 0 281 60 0 241 50 0 201 40 0 161 30 0 120 20 0 080 r 4 15 20 706 r r r Airflow rate m3 min cfm ressure 50Pa 208 230V 60Hz B 0 4 Q4 i rRIl bk bh i i cee
33. ECTOR HEATER CONTROL 2ND SW2 SWITCH FOR CAPACITY CODE TBS TERMINAL BLOCK CN25 CONNECTOR HUMIDITY OUTPUT SW5 SWITCH FOR MODE SELECTION REMOTE CONTROLLER TRANSMISSION LINE CN2A CONNECTOR 0 10V ANALOG INPUT SWE CONNECTOR EMERGENCY OPERATION OPTIONAL PARTS CN2C CONNECTOR ERV OUTPUT POWER SUPPLY BOARD W B IR WIRELESS REMOTE CONTROLLER BOARD CN2L CONNECTOR LOSSNAY F01 FUSE AC250V 6 3A RECEIVING UNIT CN32 CONNECTOR REMOTE SWITCH ZNRO01 02 VARISTOR BZ1 BUZZER CN41 CONNECTOR HA TERMINAL A DSA ARRESTOR LED1 LED RUN INDICATOR CN51 CONNECTOR CENTRALLY CONTROL X01 AUX RELAY SW1 SWITCH HEATING ON OFF CN90 CONNECTOR WIRELESS X10 AUX RELAY SW2 SWITCH COOLING ON OFF CN105 CONNECTOR RADIOFREQUENCY INTERFACE TH1 INTAKE AIR TEMPTHERMISTOR R B WIRED REMOTE CONTROLLER BOARD LED1 LED POWER SUPPLY TH2 PIPE TEMETHERMISTOR LIQUID TBe TERMINAL BLOCK LED2 LED REMOTE CONTROLLER SUPPLY TH5 COND EVA TEMP THERMISTOR REMOTE CONTROLLER TRANSMISSION LINE LED3 LED TRANSMISSION INDDOR OUTDOOR ACL AC REACTOR POWER FACTOR IMPROVEMENT CNER CONNECTOR ERV INPUT FS FLOAT SWITCH CONNECTOR HUMIDITY INPUT RFI RADIO FREQUENCY INTERFACE FOR RF THERMOSTAT 17 rom Z om Z E L E3 o Ziro 5 The black square g indicates a switch position Note1 Since the outdoor side electric wiring may change be sure to check the outdoor unit electri
34. I dol U 91 S 8 01LZ v c 8L eXelul uS 1J e uM ueuw 40 4 26 90 01 169 Hv apis uonons y 1e Ajddns Jew OU jersur ueuj yun eui periddns P SION 9jou JUNOW 8 1 6 22 6 9 eu si jonp AJU eui J ios IS tnt eels 7 1 0 q o edid y ye JO eoeds oolAJes eui MOIA Opis Ajddns pjaij loq uoisuedsns eui 10 A 15S esfy SION QL L 9 ESL 91 91 1 8 6 PEAD A24 30 36 42AA5 6 OUTLINES amp DIMENSIONS INDOOR UNIT 15 OU Jo g y Jo OU Pomel Fig OU pbr eoeds 559006 SOUBUdIUIC ooeds 559996 SOUBUBIUIC id 8 8 0 7 5 100 55900 8 5 0 8 o 11 61 p e 61 8 1 86 gt 9 06 Kez plorez K T TN Tun iUm 009 009 007i 0821 S 0 E Qo Svvev ecv avaa j ie 061 99 961 61 8 0 6 loreena 66 ousi Dip zp LIO t ove y CE MN PME SE Mu sid i _ 2u199 3 I v 11 v L1Xv L1 OS 81 OSPX0SP 9 91 91 6 ZZ 00Z sse
35. PG Pulse output for rotation 10 7 Thermistor Thermistor Characteristic graph Thermistor for lower temperature gt Thermisiontor Room temperature thermistor TH1 lower temperature Pipe temperature thermistor TH2 Condenser evaporator temperature thermistor TH5 Thermistor Ro 15kQ 3 Fixed number of B 3480kQ 2 1 1 Rt 15exp 3480 27341 973 Resistance oC 15kQ 10 C 9 6kQ 20 C 6 3kQ 25 C 5 2kQ 30 4 3kQ 4 14 32 50 68 86 104122 F 40 104 F 3 0kQ 20 10 0 10 20 30 40 50 32 1 10 8 DC FAN MOTOR FAN MOTOR INDOOR CONTROLLER BOARD Check method of DC fan motor fan motor indoor controller circuit board Notes High voltage is applied to the connecter CNMF for the fan motor Give attention to the service Do not pull out the connector CNMF for the motor with the power supply on It causes trouble of the indoor controller circuit board and fan motor Self check Symptom The indoor fan cannot turn around Check the fuse FUSE on indoor controller board Check the drain pump DP Is the resistance between terminals normal Repl
36. ace indoor controller board 1 ne deste Replace fan motor MF Did the fuse blow JV No Y Wiring contact check No Contact of lan motor connector CNMF v Replace drain pump DP Is there no contact failure gt No gt Y Yes Power supply check Remove the connector CNMF Measure the voltage in the indoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc DC310 340V TEST POINT Vcc between 5 and 4 of the fan connector Vcc DC15V V Is the voltage normal gt Yes Measure the resistance of the fan motor JV No Replace indoor Is the resistance of the fan motor N No controller board normal Refer to below table OK y Yes Check the operation END Does the fan motor rotate smoothly V NG v Yes Turn OFF the power supply and connect the connector CNMF Turn ON the power supply and Z Replace the fan motor measure the voltage of connector CNMF while rotaing the motor by the hand v Does the voltage between pin 7 and pin 4 of connector CNMF repeat 0V and 5V gt No Wes OK VYes OK Check the operation of fan Check the operation of fan V NG V NG Replace indoor controller board Replace the fan motor Replace indoor controller board Measuring points pin 5 pin 4 50kQ pin 6 pin 4 150kQ To measure the resistance connect the negative end of the tester to pin 4
37. ation of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant The following tools are necessary to use R410A refrigerant Torque wrench Electronic refrigerant charging scale 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 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 Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released 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 Em Gravimeter 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant manifold Only for R410A Use the existing fitting specific
38. ations UNF 1 2 Use high tension side pressure of 5 3MPa G or over Charge hose Only for R410A Use pressure performance of 5 09MPa G or over Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon Refrigerant recovery equipment 2 PART NAMES AND FUNCTIONS e Indoor Unit Air intake sucks the ys air inside the room into the unit Air outlet In case of rear inlet In case of bottom inlet SPECIFICATION Power supply phase cycle voltage External finish Heat exchanger 2 10 External static pressure 35 50 70 100 150 0 14 0 20 0 28 0 40 0 60 Sound pressure level 35Pa 0 14 in WG 30 32 36 Low Mid High 50Pa 0 20 in WG 30 33 37 70Pa 0 28 in WG 30 34 38 100Pa 0 40 in WG 31 36 39 150Pa 0 60in WG 33 38 42 Dimensions D mm n 782 R B INDOOR UNIT Power supply phase cycle voltage 2 18 External static pressure 35 50 70 100 150 0 14 0 20 0 28 0 40 0 60 Sound pressure level 35Pa 0 14 in WG 30 33 38 Low Mid High 50Pa 0 20 in WG 30 34 39 70Pa 0 28 in WG 31 35 39 32 37 40 34 39 43 Dimensions D mm ins _ ZA J 9 782 987 88 4 2 2 oc a z Power supply phase cycle voltage A A External finish Heat exchanger Fan 2 64 35 50 70 100 150 0 14 0 20 0 28 0 40 0 60 Operation control amp Thermostat Sound pressure level 35Pa 0 14 in WG 32 38 42 Low Mid High 50Pa 0 20 in WG 33 3
39. c wiring for servicing 2 Indoor and outdoor connecting wires are made with pola rities make wiring matching terminal numbers 51 52 53 3 Symbols used in wiring diagram above are as follows CONNECTOR TERMINAL HEAVY DOTTED LINE FIELD WIRING THIN DOTTED LINE OPTIONAL PARTS 4 Use copper supply wire REFRIGERANT SYSTEM DIAGRAM PEAD A24 30 36 42AA5 Strainer 50 Heat exchanger Refrigerant GAS pipe connection Flare Thermistor TH5 Cond Eva temperature Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection CY AL Flare L Thermistor TH2 Thermistor TH1 Pipe temperature Liquid Room temperature Strainer 50 Distributor with strainer 50 18 9 HEATER CONTROL 9 1 CONTROL SPECIFICATIONS AND FUNCTION SETTING Table 1 shows how the field installed heater is controlled Select the desired pattern in the table below and set the Function on the indoor units as shown in Table 1 Table 1 Function table Select unit numbers 01 to 03 or all units AL wired remote controller 07 IR wireless remote controller Mode Setting Mode No No Initial setting r Heater 1st Heater OFF 1 control 2nd Inlet air temp gt set temp Heater ON Inlet air temp lt set temp 4 5 F 2 5 C The fan will stop ant the heater will turn off when DEFROST or ERROR is displayed _ _ Set temp inkt
40. d high temperature operation beyond the tolerance range Defective indoor fan motor e Fan motor is defective e Indoor controller board is defective Heating mode D Check clogs of the filter Remove shields Refer to 10 8 DC Fan motor FAN MOTOR INDOOR CONTROLLER BOARD Check outdoor fan motor Check operating condition of refrigerant circuit Defective outdoor fan control Overcharge of refrigerant Defective refrigerant circuit clogs Bypass circuit of outdoor unit is defective D Slight temperature difference between indoor room temperature and pipe liquid or condenser evaporator temperature thermistor e Shortage of refrigerant e Disconnected holder of pipe Check pipe liquid or condenser evaporator temperature with room temperature display on remote controller and outdoor controller circuit board Pipe liquid or condenser evaporator temperature display is indicated by liquid or condenser setting SW2 of outdoor controller circuit evaporator thermistor board as follows Defective refrigerant circuit Conduct temperature check with outdoor Converse connection of controller circuit board after connecting extension pipe on plural units Control Service Tool PAC SK52STY connection Converse wiring of indoor outdoor unit connecting wire on plural units connection Defective detection of indoor room temperature and pipe condens
41. e beeper does not sound again after the initial two 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 three times continuously beep beep beep 0 4 0 4 0 4 sec after the initial two beeps to confirm the self check start signal was received the specified refrigerant address is incorrect On IR wireless remote controller The continuous buzzer sounds from receiving section of indoor unit Blink of operation lamp e On wired remote controller Check code displayed on the LCD e If the unit cannot be operated properly after the above test run has been performed refer to the following table to remove the cause Symptom TEN Wired remote controller LED 1 2 PCB in outdoor unit I After LED 1 2 are lighted LED 2 is turned e For about 2 minutes after power on operation of the For about 2 minutes PLEASE WAIT off then only LED 1 is lighted Correct remote controller is not possible due to system start up following power on operation Correct operation e Connector for the outdoor unit s protection device is not connected PEE i CE Afer about 2mm Only LED 1 is lighted gt LED 1 2 blink Reverse or open phase wiring for the outdoor unit s power utes has expired terminal block L1 L2 L3 Display messages do not appear did 3 APP following power on Incorrect wiring between indoor and outdoor units e
42. er evaporator temperature thermistor Stop valve is not opened completely G Check converse connection of extension pipe or converse wiring of indoor outdoor unit connecting wire 26 Abnormality of pipe temperature ther Defective thermistor Check resistance value of thermistor mistor Condenser Evaporator TH5 characteristics For characteristics refer to P1 above D The unit is in three minute resume pro Contact failure of connector 2 Check contact failure of connector CN44 tection mode if short open of thermistor CN44 on the indoor controller the indoor controller board is detected Abnormal if the unit does board Insert failure Refer to 10 5 not get back to normal within three min Breaking of wire or contact Turn the power on and check restart after utes The unit returns to normal opera failure of thermistor wiring and check pipe tion if it has normally reset Temperature of thermistor is a evaporator gt Constantly detected during cooling dry 90 C 194 F or more or If pipe condenser evaporator tempera ing and heating operation except 40 C 40 F or less caused by ture is extremely low in cooling mode or defrosting defective refrigerant circuit high in heating mode refrigerant circuit Short 90 C 194 F or more Defective indoor controller may have defect Open 40 C 40 F or less board When no problems are found above re
43. essure level dB 0dB 20yPa Octave band pressure level dB 0dB 20uPa Octave band pressure level dB OdB PEAD A36AA5 External static pressure 0 14 in WG 35Pa 65 0 60 0 55 0 50 0 P 45 0 40 0 35 0 F 30 0 25 0 20 0 15 0 10 0 audible limit on 772 continuous noise Approximate minimum 5 0 70 0 250 500 1k 2k Octave band center frequencies Hz NC 60 NC 50 NC 40 NC 20 External static pressure 0 20 in WG 50Pa 65 0 60 0 55 0 50 0 P 45 0 40 0 35 0 30 0 25 0 20 0 15 0 audible limit on 17 continuous noise 5 0 Approximate minimum 70 0 250 500 1k 2k Octave band center frequencies Hz NC 60 NC 50 NC 40 NC 30 NC 20 External static pressure 0 28 in WG 70Pa 65 0 60 0 55 0 k 50 0 P 45 0 40 0 35 0 30 0 25 0 20 0 15 0 10 0 audible limit on continuous noise Approximate minimum 5 0 250 500 1k 2k Octave band center frequencies Hz NC 60 NC 50 NC 40 NC 30 NC 20 13 20uPa Octave band pressure level dB OdB 20uPa Octave band pressure level dB OdB 70 0 65 0 60 0 55 0 50 0 45 0 40 0 35 0 30 0 25 0
44. f wire or contact failure can be detected 2 Check contact failure of connector CN20 o the indoor controller board Refer to 10 5 Turn the power on again and check restart after inserting connector again 4 Check room temperature display on remote controller Heplace indoor controller board if there is abnormal difference with actual room temperature Turn the power off and on again to operate after check 0 9 Check resistance value of thermistor For characteristics refer to P1 above 2 Check contact failure of connector CN44 on the indoor controller board Refer to 10 5 Turn the power on again and check restart after inserting connector again Check pipe liquid temperature with remote controller in test run mode If pipe liquid temperature is extremely low in cooling mode or high in heating mode refrigerant circuit may have defective Check pipe liquid temperature with remote controller in test run mode If there is extreme difference with actual pipe liquid temperature replace indoor controller board Turn the power off and on again to operate after check D Check contact failure of float switch connec tor Turn the power on again and check after inserting connector again Operate with connector CN4F short circuited Replace indoor controller board if abnormali ty reappears D Check if drain up machine works 2 Check drain function Remove drain float swi
45. ing parts are included in the package 1 External output cable with a yellow connector 2 in total Two types of cables with different connectors are included 2 Panel heater connector 3 in total White 1 Green 2 2 types 2 Connection to the indoor unit Use the cables that fit the connectors on the indoor unit control board 1 External output cable with a yellow connector This cable is used to connect a relay circuit for an interlocked operation with either an electric or a panel heater Connect the cable to CN24 on the indoor unit control board 2 Panel heater connector with a white connector This connector is used to perform an interlocked operation with a panel heater Depending on the indoor unit control board specification connect the cable to CN4Y as appropriate Image CN4Y for FAN control lt PAC YU25HT Z 20 3 Locally procured wiring A basic connection method is shown below Indoor unit Remote control board Relay circuit Adapter control board Mx MEM MM Md pps T IF 2o li ito T T I E d cx X y White 1 Electric Heater or panel T 3 heater applicable only when a panel Il 1 i featerisiconnected _ _ lt Preparations in the field Maximum cable length is 10 m
46. ing screws on the heat exchanger L to remove it e Tighten screws to a torque of 1 4 0 2 N m Fig 13 39 MITSUBISHI ELECTRIC CORPORATION http Global MitsubishiElectric com New publication effective Sep 2014 HWE14030 Specifications subject to change without notice
47. n removing the indoor controller board hold the edge of the board with care NOT to apply stress on the components 3 When connecting or disconnecting the connectors hold the housing of the connector DO NOT pull the lead wires re Lead wires Housing point 22 10 2 SELF CHECK FUNCTION e Refer to the installation manual that comes with each remote controller for details e RF thermostat is not established Output pattern A Errors detected by indoor unit Wired remote controller Beeper sounds OPERATION symptom Remark INDICATOR lamp flashes Number of times sensor error TT T Pipe Liquid or 2 phase pipe sensor error S doorowdoorunicommankenemgr Drinsensoremor G brain pump ent a Communication eror between indoor and oada Remote controller signal receiving error 25 935 j n nn n indoor unit control system error memory eror ec We sound No corresponding sounds OPERATION INDICATOR lamp flashes Number of times Indoor outdoor unit communication error Transmitting error Outdoor unit Abnormal high pressure 63H worked Overheating safeguard operation For details check the LED display of the outdoor controller board Abnormality such as overvoltage or voltage shortage and abnormal uU 25858 1 If th
48. normally for circuit of indoor controller board outdoor unit three minutes Defective transmitting receiving Check all the units in case of twin triple E6 Consider the unit as abnormal under the circuit of indoor controller board indoor unit system following condition When two or more Noise has entered into indoor 9 Turn the power off and on again to check indoor units are connected to an outdoor unit connecting wire If abnormality generates again replace outdoor unit indoor controller board indoor controller board or outdoor cannot receive a signal for three minutes controller circuit board from outdoor controller circuit board a Other indoor controller board may have signal which allows outdoor controller defect in case of twin triple indoor unit circuit board to transmit signals system Indoor outdoor unit communication Defective transmitting receiving O Turn the power off and on again to check error Transmitting error circuit of indoor controller board If abnormality generates again replace Abnormal if 1 receiving is detected 30 Noise has entered into power indoor controller board times continuously though indoor controller supply board has transmitted O Noise has entered into outdoor control wire Indoor controller board D Defective indoor controller Replace indoor controller board Abnormal if data cannot be read normally board from the nonvolatile memory of the indoor controller board
49. or 1 minute and 30 seconds continuously with drain pump on Turn off compressor and indoor fan Drain pump is abnormal if the condition above is detected during suspensive abnormality 3 Constantly detected during drain pump operation On board Defective thermistor characteristics Contact failure of connector CN20 on the indoor controller board Insert failure Breaking of wire or contact failure of thermistor wiring Defective indoor controller Defective thermistor characteristics 2 Contact failure of connector CN44 on the indoor controller board Insert failure Breaking of wire or contact failure of thermistor wiring Defective refrigerant circuit is causing thermistor temperature of 90 C 194 F or more or 40 C 40 F or less Defective indoor controller board Contact failure of connector Insert failure Defective indoor controller Malfunction of drain pump Defective drain Clogged drain pump Clogged drain pipe Defective drain float switch Catch of drain float switch or malfunction of moving parts cause drain float switch to be detected under water Switch Defective indoor controller 0 69 Check resistance value of thermistor 0 C 32 F 15 0kQ 10 C BO F 9 6kQ 20 C 68 F 6 3kQ 30 C 86 F 4 3kQ 40 C 104 F 3 0kQ If you put force on draw or bend the lead wire with measuring resistance value of thermistor breaking o
50. place the indoor unit control board Remote controller transmission Contact failure at transmission Check disconnection or looseness of indoor error E0 signal receiving error E4 wire of remote controller unit or transmission wire of remote controller D Abnormal if main or sub remote con All remote controllers are set Set one of the remote controllers main troller can not receive normally any as sub remote controller In If there is no problem with the action above transmission from indoor unit of refriger this case EO is displayed on Check E of ant address for three minutes remote controller and E4 is Jota wiring lengin max 500m Error code EO displayed at LED LED T LEDA PO nose calle of more sme e The number of connecting indoor units Abnormal if sub remote controller could on the outdoor controller circuit max 1 6unite 9 not receive for any signal for two min board The number of connecting remote con utes Error code E0 Mis wiring of remote controller troller max 2units Defective transmitting receiving D Abnormal if indoor controller board can circuit of remote controller When it is not the above mentioned problem of not receive normally any data from Defective transmitting receiving D G EO remote controller board or from other circuit of indoor controller board Diagnose remote controllers or indoor controller board for three minutes refrigerant add
51. ransmitting receiving 0 6 Diagnose remote controller circuit of remote controller a When RC OK is displayed remote con D Abnormal if indoor controller board could He 2 not find blank of transmission path Defective transmitting receiving trollers have no problem Error code E5 circuit of indoor controller a Us ss on ipo to auus or Indoor controller board receives trans board 1 irole b e SUI E HODIE 5 mitted data at the same time compares Noise has entered into trans Mise ra the data and when detecting it judges mission wire of remote con b When RC NG is displayed replace different data to be abnormal 30 continuous times Error code E5 remote controller troller c When RC E3 or ERC 00 66 is displayed noise may be causing abnormality 27 Indoor outdoor unit communication D Contact failure short circuit or Check LED display on the outdoor control cir error Signal receiving error mis wiring converse wiring of cuit board Connect A control service tool D Abnormal if indoor controller board indoor outdoor unit connecting PAC SK52ST cannot receive any signal normally for wire Refer to EA EC item if LED displays EA EC six minutes after turning the power on D Check disconnection or looseness of indoor Abnormal if indoor controller board Defective transmitting receiving outdoor unit connecting wire of indoor unit or cannot receive any signal
52. ress 0 When RC is displayed E4 Error code E4 Noise has entered into the Remote controllers have no problem Indoor controller board cannot receive transmission wire of remote Turn the power off and on again to check If abnormality generates again replace any signal from remote controller for two controller indoor controller board minutes Error code E4 b When RC NG is displayed Replace remote controller c When is displayed d When ERC 00 06 is displayed c d Noise may be causing abnormality If the unit is not normal after replacing indoor controller board in group control indoor controller board of address may be abnormal Remote controller transmission error E3 signal receiving error E5 Two remote controller are set D Set a remote controller to main and the Abnormal if remote controller could not as main other to sub find blank of transmission path for six In case of 2 remote con seconds and could not transmit Error code E3 trollers l Remote controller receives transmitted Remote controller is connected Remote controller is connected with only one data at the same time compares the with two indoor units or more indoor unit data and when detecting it judges Repetition of refrigerant The address changes to a separate setting different data to be abnormal 30 address continuous times Error code E3 Defective t
53. tch connector CNAF and check if it is short Switch On with the moving part of float switch UP or OPEN with the moving part of float switch down Replace float switch if it is short with the moving part of float switch down Replace indoor controller board if it is short circuited between of the drain float switch connector CNAF and abnormality reappears It is not abnormal if there is no problem about the above mentioned O Turn the power off and on again to operate after check 25 SS Freezing overheating protection is working D Freezing protection Cooling mode The unit is in six minute resume prevention mode if pipe lt liquid or condenser evap orator gt temperature stays under 15 for three minutes after the compressor started Abnormal if it stays under 15 C 5 F for three minutes again within 16 minutes after six minute resume prevention mode 2 Overheating protection Heating mode The units is in six minute resume prevention mode if pipe Liquid or con denser evaporator temperature is detected as over 70 C 158 F after the compressor started Abnormal if the temperature of over 70 C 158 F is detected again within 10 minutes after six minute resume prevention mode Pipe temperature Cooling mode 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
54. ven when operation switch is Only LED 1 is lighted gt LED 1 2 blinks incorrect polarity of 1 2 3 el ep et BUNCE LER Remote controller wire short not light up On the IR wireless remote controller with conditions above following phenomena takes place No signals from the remote controller are accepted e OPE lamp is blinking e The buzzer makes a short ping sound Note Operation is not possible for about 30 seconds after cancellation of function selection Correct operation 23 For description of each LED LED1 2 3 provided on the indoor controller refer to the following table LED 1 power for microcomputer Indicates whether control power is supplied Make sure that this LED is always lit LED 2 power for remote controller Indicates whether power is supplied to the remote controller This LED lights only in the case of the indoor unit which is connected to the outdoor unit refrigerant address LED 3 communication between indoor and outdoor units Indicates state of communication between the indoor and outdoor units Make sure that this LED is always blinking AUTO RESTART FUNCTION Indoor controller board This model is equipped with the AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller the operation mode set temperature and the fan speed are memorized by the indoor controller board The auto restart function sets to work the moment the power
55. z s od kas NM whe ste Poet doe bee hoe pee eek w ac L Ste Y s 0 161 30 120 20 pep 1 SEADOO 0 080 10 PRE LOTEN PEE PEPE PETA ee ah 2dccba b2cLelo b M PET TERE ET EEIE EOT CTE EOE 0 040 0 0 45 530 70 20 6 PEAD A42AA5 External static pressure 70Pa 208 230V 60Hz External static pressure Pa in WG 150 0 602 100 883 30 1059 Airflow rate m8 min cfm Suchen sk op SSS a sp 5 1236 40 1412 moms SS Kiku 0 401 Sau p e ne ene cra anata eee 4 M bra ee ec jus l ERE EEA PAE iddle Eu mh TIE eats S kon fF LENE 50 0 201 0 i i i 0 15 20 25 30 5 40 45 530 706 883 1059 1236 1412 1589 Airflow rate m8 min cfm 45 1589 45 1589 PEAD A42AA5 External static pressure 100Pa 208 230V 60Hz 200 eee T ZEF 0 803 M UM A NEU

PEAD-A~AA5 Service Manual

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