TECHNICAL & SERVICE MANUAL
Contents
1. BACK MONITOR SET DAY aa CHECK TEST Cv Gy PAR 21MAA amp CLOCK V OPERATION CLEAR L1 1 L Start Stop button Fan Speed button Filter button return sign button Test Run button Service button Clear button Airflow Up Down button Louver button Operation button ND To preceding operation number Ventilation button A Operation button A To next operation number Display Sensor indication For purposes of this explanation all parts of the display are shown as lit During actual operation only the relevant items will be lit Time Timer Display Shows the current time unless the simple or Auto Off timer is set If the simple or Auto Off timer is set shows the time remaining Identifies the current operation Shows the operating mode etc Multilanguage display is sup ported TIME SUN MON TUE THU FRI SAT TIMER ON AFTER gt AFTER ERROR CODE Centrally Controlled indicator ES Indicates that operation of the re mote controller has been prohib ONLY1Hr w ited by a master controller de m Air Direction indica Ventilation indicator or Timer Is Off indicator Appears when the unit is running in The indicator N shows the direc Ventilation mode Indicates that the timer is off2. On wired remote controller D Check code displayed in the LCD 21 f the unit cannot be operated properly after the test run has been performed refer to the following table to remove the cause Symptom Cause Wired remote controller LED 1 2 PCB in outdoor unit For about 2 After LED 1 2 are lighted LED 2 is For about 2 minutes after power on op PLEASE WAIT minutes after turned off then only LED 1 is eration of the remote controller is not possible power on lighted Correct operation due to system start up Correct operation Connector for the outdoor unit s protection E Only LED 1 is lighted gt device is not connected PLEASE WAIT Error code After about 2 LED 1 2 blink Reverse or open phase wiring for the outdoor minutes has unit s power terminal block L1 L2 L3 Display messages do not Only LED 1 is lighted gt Incorrect wiring between indoor and outdoor appear even when operation LED blinketwise units incorrect polarity of 51 S2 53 switch is turned ON operation LED 2 blinks once Remote controller wire short lamp does not light up On the wireless remote controller with condition above following phenomena take place No signals from the remote controller are accepted Operation lamp is blinking The buzzer makes a short piping sound Note Operation is not possible for about 30 seconds after cancellation of function selection Correct
3. APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz gt N e d eee lee 8 to lof ee elle N lt 50 60Hz gt SEZ KD35VAQ i Ed External static pressure 50Pa ENEEEEEEE 0 0002 ubar 4 HB o eo z Q Bi Ad gt e C eo MAZZA lo oof eo oe TERESHOLD OF HEARING FOR CONTINUOUS NOISE L 7 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz MAT OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB RS SSS DRE PE im NOTE The sound level is measured in an anechoic room where echoes are few when compressor stops The sound may be bigger than displayed level under actual installation condition by surrounding echoes The sound level can be higher by about 2 dB than the displayed level during cooling and heating operation iu 50 60Hz High 36 Middle SEZ KD50VAQ External static pressure 5Pa 0 0002 ubar y od APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB z Q N el loo oe poc 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 50 60Hz SEZ KD50VAQ External static pressure 35Pa m i zd z Q TERESHOLD OF HEARING FOR MEE m
4. Short cycle of air path Over load high temperature operation beyond the tolerance range Defective indoor fan motor Fan motor is defective Indoor controller board is defective Heating mode D Check clogs of the filter 2 Remove shields Refer to 6 7 DC Fan motor FAN MOTOR INDOOR CONTROLLER BOARD Check outdoor fan motor Check operating condition of refrigerant circuit Defective outdoor fan control 6 Overcharge of refrigerant Defective refrigerant circuit clogs Bypass circuit of outdoor unit is defective Slight temperature difference between indoor room temperature and pipe liquid or condenser evaporator temperature thermistor e Shortage of refrigerant 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 A Control Service Tool PAC SK52ST connection Converse wiring of indoor outdoor unit connecting wire on plural units connection Defective detection of ind
5. tion of the outcoming airflow Louver display Indicates the action of the swing louver Does not appear if the louver is stationary Hour Only indicator Displayed if the airflow is set to Low and downward during COOL Temperature Setting or DRY mode Operation varies Power On indicator Shows the target temperature according to model Indicates that the power is on The indicator goes off after one hour at which time the airflow di rection also changes Caution Only the Power on indicator lights when the unit is stopped and power supplied to the unit f you press a button for a feature that is not installed in the indoor unit the remote controller will display the Not Available message If you are using the remote controller to operate multiple indoor units this message will appear only if the feature is not present at the parent unit When power is turned ON for the first time it is normal that PLEASE WAIT is displayed on the room temperature indication For max 2minutes Please wait until this PLEASE WAIT indication disappears then start the operation SPECIFICATIONS Power source __ 230 23ov soH Power input Current Temperature set range Remote controller C F 19 to 30 67 to 86 17 to 28 63 to 83 Airflow direction Fan Sirocco fan 2 5 15 35 50 DC blushless motor 0 096 Direct driven Airflow rate Lo
6. 10 SEZ KD60VAQ External static pressure 15Pa 220 240V 50 60Hz External static pressure Pa 50 20 10 x N N 9 10 11 12 13 14 15 16 17 18 19 Airflow rate m min SEZ KD60VAQ External static pressure 50Pa 220 240V 50 60Hz External static pressure Pa 80 Rated point UN 40 An d rak HNE 9 10 11 12 13 14 15 16 17 18 19 Airflow rate m min 6 20 SEZ KD71VAQ External static pressure 5Pa 220 240V 50 60Hz External static pressure Pa Airflow rate m min SEZ KD71VAQ External static pressure 35Pa 220 240V 50 60Hz External static pressure Pa 3 14 18 19 20 2 Airflow rate m min SEZ KD71VAQ External static pressure 15Pa 220 240V 50 60Hz External static pressure Pa 50 40 6 11 12 13 14 15 16 17 18 19 20 21 Airflow rate m min SEZ KD71VAQ External static pressure 50Pa 220 240V 50 60Hz External static pressure Pa 16 80 50 20 P 1 12 13 14 15 16 17 18 19 20 2 Airflow rate m min A C2 10 1 1 3 OUTLINES AND DIMENSIONS Unit mm 20 157 5 15 D n n mE P Me xx Re RR 0999 5 es alt 8 E RRI lt x 8 o lt lt Air Air 2 Met outlet inlet D 00 04 3 e e O LLI EU IN N 2XE 2 9
7. 450 x 450 mm each as shown in Fig 2 Access door 2 is not required if enough space is available below the unit for a maintenance worker to work in 2 When a space of less than 300 mm is available below the unit between the unit and the ceiling At least 20 mm of space should be left below the unit as shown in Fig 3 Create access door 1 diagonally below the electric box and access door 3 below the unit as shown in Fig 4 Create access door 4 below the electric box and the unit as shown in Fig 5 Electric Ceiling beam lt air Intakeair 3 Access door Ceiling Fig 3 50 700 Min 300 mm 415 T 450 Access door EX i 450x450 i Electric box VAIN 100 200 Bottom of indoor unit Access door 3 B TH Maintenance access space Viewed from the direction of Fig 4 the arrow B Access door 2 450 x 450 LIII Bottom of indoor unit 50 150 450 Maintenance access space Viewed from the direction of Fig 2 the arrow A 50 700 Min 300 mm Electric box Bottom of indoor unit Access door 4 TIT Viewed from the direction of Fig 5 the arrow B Maintenance access space SEZ KDa5 G0 900 150 250 1000 1500 18 4 WIRING DIAGRAM
8. INSIDE SECTION OF CONTROL BOX 1 1 _ ias ar CN2L 00000 0000 L1 ONLY ON OFF d Lm SEZ KD71VAQ L1 o x KER I E l CN4F TB4 UN E TO 7 S3 _ OUTDOOR o UNT l Wi 4 4 CM eas FS TH5 TH1 A DRAINPUMP 7 FAN MOTOR SYMBOL EXPLANATION SYMBOL NAME SYMBOL NAME INDOOR CONTROLLER BOARD TH1 INTAKE AIR TEMP THERMISTOR FUSE FUSE AC250V 6 3A TH2 PIPE TEMP THERMISTOR LIQUID ZNRO01 02 VARISTOR TH5 COND EVA TEMP THERMISTOR DSA ARRESTER L1 AC REACTOR POWER FACTOR IMPROVEMENT X1 AUX RELAY FS FLOAT SWITCH CN2L CONNECTOR LOSSNAY TERMINAL BLOCK 4 CN32 CONNECTOR REMOTE SWITCH INDOOR OUTDOOR CONNECTING LINE CN41 CONNECTOR HA TERMINAL A TERMINAL BLOCK TB15 CN51 CONNECTOR CENTRALLY CONTROL REMOTE CONTROLLER TRANSMISSION LINE LED1 POWER SUPPLY I B R B REMOTE CONTROLLER BOARD LED2 POWER SUPPLY I B TERMINAL BLOCK TB6 LED3 TRANSMISSION INDOOR OUTDOOR REMOTE CONTROLLER TRANSMISSION LINE SW1 SWITCH FOR MODEL SELECTION SW2 SWITCH FOR CAPACITY CODE SWE CONNECTOR EMERGENCY OPERATION NOTE 1 Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing 2 Indoor and outdoor connecting wires are made with polarities make wiring matching terminal num
9. and 6 minutes after the liquid or condenser evaporator pipe 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 2 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 3 deg lt TH5 TH1 Cooling or drying mode Clogged filter reduced airflow Short cycle of air path Low load low temperature operation beyond the tolerance range Defective indoor fan motor Fan motor is defective Indoor controller board is defective Cooling or drying mode Check clogging of the filter Remove shields Refer to 6 7 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 Heating mode D Clogged filter reduced airflow
10. i TERESHOLD OF HEARING FOR NE NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB ORAT z N BAIANA NA NAN WARN poem Jd 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 50 60Hz SEZ KD71VAQ pr External static pressure 50Pa 0 0002 ubar mM LM 77 E P PER TERESHOLD OF HEARING FOR ours Aue OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB Jis z Q WANN ME 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz Aux duct INDOOR FAN PERFORMANCE AND CORRECTED AIR FLOW SEZ KD25VAQ SEZ KD25VAQ External static pressure 5Pa 220 240V 50 60Hz External static pressure 15Pa 220 240V 50 60Hz 50 6 N External static pressure External static pressure Pa 10 0 Airflow rate m min Airflow rate m min SEZ KD25VAQ SEZ KD25VAQ External static pressure 35Pa 220 240V 50 60Hz External static pressure 50Pa 220 240V 50 60Hz 80 70 60 T T I 50 g 40 9 I I 30 X X 20 10 0 4 5 6 7 8 9 10 Airflow rate m min Airflow rate m min 12 SEZ KD35VAQ SEZ KD35VAQ External static pressure 5Pa 220 240V 50 60Hz External static pressure 15Pa 220 240V 50 60Hz 40 wo 20 External static pressure Pa External static pressure Pa 10 0 Airflow rate m min Airflow rate m min SEZ KD35VAQ SEZ KD35VAQ E
11. i N E ee fe ne ten 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz lt 50 60Hz gt SEZ KD60VAQ i pe External static pressure 35Pa ES 0 0002 ubar SS SS 3 P TERESHOLD OF HEARING FOR CONTINUOUS OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB p LM z N EHI dd ESSE ENSE p L 7 eu 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 50 60Hz NOTCH SPL dB LINE 38 SEZ KD60VAQ External static pressure 15Pa High ow Low 30 0 0002 ubar WM 2 Q N e z z Q Q 5 RB HS TERESHOLD OF HEARING FOR CONTINUOUS NOISE pz 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz z Q N de eee eee A oof of of loaf MAMMA el ted lad Mal elfen lt 50 60Hz gt SEZ KD60VAQ i External static pressure 50Pa 0 0002 ubar Z Z 8 o A o m eo HE ES DN 2 eo ENS TERESHOLD OF HEARING FOR CONTINUOUS NOISE L 7 eu 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB e ule z NP oe ne N NOTE The sound level is measured in an anechoic room where echoes are few when compressor stops The sound may be bigger than displayed l
12. is detected during suspensive cause drain float switch to be the moving part of float switch down abnormality detected under water Switch Replace float switch if it is short with the P5 Constantly detected during drain pump On moving part of float switch down operation Defective indoor controller Replace indoor controller board if it is short board circuited between of the drain float switch connector CN4F 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 Ooo O Freezing overheating protection is working 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 15C for three minutes after the com pressor started Abnormal if it stays under 15 C for three minutes again within 16 minutes after six minute resume prevention mode 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 after the com pressor started Abnormal if the temper ature of over 70 C 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
13. operation For description of each LED LED1 2 3 provided on the indoor controller refer to the following table LED1 power for microcomputer Indicates whether control power is supplied Make sure that this LED is always lit LED2 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 0 LED3 communication between indoor and Indicates state of communication between the indoor and outdoor units outdoor units Make sure that this LED is always blinking Wireless remote controller 1 Turn on the power to the unit at least 12 hours before the test run 2 Press the TEST RUN button 9 twice continuously Start this operation from the status of remote controller display turned off and current operation mode are displayed 3 Press the MODE button to activate COOL mode then check whether cool air is blown out from the unit 4 Press the MODE button to activate HEAT mode then check whether warm air is blown out from the unit b Press the FAN button and check whether fan speed changes 6 Press the button and check whether the auto vane operates erly 7 Press the ON OFF button to stop the test run Note Point the remote controller towards the indoor unit receiver while fol lowing steps 2 to 7 e It is not possible to run
14. or indoor controller board for three minutes refrigerant address 0 a When RC is displayed 4 Error code E4 Noise has entered into the Hemote controllers have no problem eci Turn the power off and on again to check 2 Indoor controller board cannot receive transmission wire of remote i 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 remote controller c When RC is displayed d When ERC 00 06 is displayed c d 5 Noise may be causing abnormality If the unit is not normal after replacing indoor controller board in group control indoor controller board of address 0 may be abnormal Remote controller transmission error E3 signal receiving error E5 D Two remote controller are set 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 trollers 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 settin
15. the ON OFF button to stop the self check 9 CHECK button Refrigerant address 9 680 TEMP button IC Indoor unit OC Outdoor unit Check code For description of each check code refer to the following table D Check code Symptom Pipe TH2 sensor error P9 _ jPipe TH5 senoremo P4 P5 i i i Fb i E9 i UP P5 Drainpumperror 0 Pe Freezig Overheatingprotecionoperation Communication error between indoor and outdoor units P8 Pipe temperature error ooo E0 ES ES Fb control system error memory error ete S Eo indoor outdoor unit communication error Transmitting error Outdoor unit Compressor overcurrent interruption U2 For details check the LED display U1 Ud Abnormal high pressure 63H worked Overheating protection operation of the outdoor controller board Abnormal temperature of heat sink As for outdoor unit refer to U5 Outdoor unit fan safeguard stop MANUA DEE Compressor overcurrent interruption Abnormal of power module U7 Abnormality of super heat due to low discharge temperature U9 UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Current sensor error Others Other errors Refer to the technical manual for the outdoor unit EO E3 E5 Remote controller transmission error
16. the procedure in section 1 1 Pull out the thermistor holder B and thermis tor C on the control box SEZ KD VA model only Fig 3 33 Ooo O 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 2 Removing the drainpan 1 Pull out the drain pan in the direction of the arrow 1 Note e Drain the water out of the drain pan before removing it To avoid dew condensation use insulated screws in the places marked with circles in Fig 6 Insulation material Fig 6 34 Ooo O 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 exchanger cover F to remove it Fig 7 3 Removing the thermistor 1 Remove the thermistor G from the thermistor holder H on the copper tube Thermistor size Liquid pipe 8mm Condenser evaporator 6mm Fig 8 35 Ooo O 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 2 Remove the f
17. the in FAN DRY or AUTO mode 22 Output pattern A Errors detected by indoor unit Wired remote Wireless remote controller controller Beeper sounds OPERATION symptom Remark INDICATOR lamp flashes Check code Number of times Fite sensor er E gt PAP8 Pie 0 2 pipe sensor erro DEM TEE Indooroutdoor unit communication enor pa LL Ps 8 Ps ReemnyOvehesingssegusdoperalon 7 Gommwncsionemorbeweenindoorandoudoorunts O 8 P PPetmpm weemr 9 E amp Remdecowolersgmieciigemr O O SSS indoor uni control system error memory error etc NEN Refrigerant circuit abnormal MEME Nosumd corresponding dd Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wireless remote controller Beeper sounds OPERATION INDICATOR Symptom Remark lamp flashes Number of times Indoor outdoor unit communication error Transmitting error Outdoor unit 03 GemwesowwemwenweWpln J eis of outdoor unit hermistors Forres overcurrent erupto When compresor oke ron gh discharging temperatureSC worked iufient regen PB Abnormal high pressure 63H worked Overheating safeguard operation Abnormal temperature of heat sink For details check the LED Foto arti protecion stop spay othe outdoor conto 9 ee Compressor overcurrent interruption Abnormal of power modul
18. Air fil ir filter Suspension bolt hole E ET ion line Retrigerant Bie 700 4 14X30 Slot emote controller transmission line 77 flare connection liquid 10 i Control box Knockout hole 227 IO il Indoor outdoor connecting line Ie F a lt o CN 0 p 2 2 42 9 Terminal block Indoor outdoor connecting line o Refrigerant piping Terminal block Remote controller transmission line flare connection gas BERRE Drain 0 232 draining eo s 860 7 700 20 6 35 ee NE emm Note1 Use M10 screw for the suspension field supply 2 Keep the service space for the maintenance at the bottom 3 This chart indicates for SEZ KD50VAQ model which has 3 fans SEZ KD25 35VAQ models have 2 fans SEZ KD60 71VAQ models have 4 fans 4 In case an inlet duct is used remove the air filter supply with the unit then install the filter field supply at suction side 17 Secure enough access space to allow for the maintenance inspection and replacement of the motor fan drain pump heat exchanger and electric box in one of the following ways Select an installation site for the indoor unit so that its maintenance access space will not be obstructed by beams or other objects 1 When a space of 300 mm or more is available below the unit between the unit and the ceiling Fig 1 Create access door 1 and 2
19. Elie 0 63 12 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB z Q N EZ Bw NE dis 50 60Hz FM E SEZ KD50VAQ External static pressure 15Pa 0 0002 ubar APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB gt N VAT ATA Ton pe 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz lt 50 60Hz gt SEZ KD50VAQ External static pressure 50Pa 0 0002 ubar eo Fey TERESHOLD OF HEARING FOR ee elie 63 12 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 2 Q ER NOTE The sound level is measured in an anechoic room where echoes are few when compressor stops The sound may be bigger than displayed level under actual installation condition by surrounding echoes The sound level can be higher by about 2 dB than the displayed level during cooling and heating operation 50 60Hz NOTCH SPL dB LINE 37 SEZ KD60VAQ External static pressure 5Pa High 16 Co Low 29 P TL TE im 2 Q N e OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB dd im Z Q A o TT aM lad el Model ele TERESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB z
20. MITSUBISHI Changes for the Better a ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS 201 2 R410A TECHNICAL amp SERVICE MANUAL Ceiling Concealed Model name Indoor unit SEZ KD25VAQ SEZ KD35VAQ SEZ KD50VAQ SEZ KD60VAQ SEZ KD71VAQ SLIM CONTENTS 4 DART NAMES AND FUNCTIONS SU OUO OU Ead Id nee 2 3 dide a tu IT rrr crete rrr cre 4 2 OUTLINES AND DIMENSIONS ite 17 WIRING DIAGRAM epus rere Tce rrr ere err err ere MINUM ee rrr 19 5 REFRIGERANT SYSTEM DIAGR A 20 6 TROUBLESHOOTING a 24 T DISASSEMBLY PROCEDUREFE SSeeeeeeeeeeeeee 33 PART NAMES AND FUNCTIONS Indoor Unit Air outlet Air outlet duct flange Air inlet Wired remote controller option Once the controls are set the same operation mode can be repeated by simply pressing the ON OFF button e Operation buttons Set Temperature buttons Down Up Timer Menu button Monitor Set button Mode button Return button Set Time buttons CAJ Ahead Timer On Off button Set Day button Opening the door M MITSUBISHI ELECTRIC D ON OFF OMENU OON OFF Pal TS FILTER Wu um um Ca
21. VEL dB 0 dB gt 2 N eo VETO lt 50 60Hz gt SEZ KD25VAQ SPL dB Hig 4 j e External static pressure 35Pa AIDE E E E SS BREL p e Ji 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 0 0002 ubar O N e O o 2 Oo B e 5 O e OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB E KE VA Hg bee EF ES OF HEARING FOR Eus eee E UE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB j 2 Oo N lt 50 60Hz gt High 30 Middle SEZ KD25VAQ External static pressure 15Pa 0 0002 ubar 5 N z z z B 5 gt of AN dn OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB TERESHOLD OF HEARING FOR CONTINUOUS 1 zs 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz gt d N eo PRA 50 60Hz SEZ KD25VAQ External static pressure 50Pa E lt Lm VN TERESHOLD OF HEARING FOR CONTINUOUS NOISE LC E 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 0 0002 ubar p Mh N e 5 5 e o 5 Bh e FP TS JA z ENME 3 E i 3 ic i d Lol z 2 AH LL NOTE The sound level is measured in anechoic
22. 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 5 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 switch is disconnected Turn the power on again and check after P4 and 4 of connector is not inserting connector again 5701 short circuited Defective indoor controller Operate with connector CN4F short circuited Constantly detected during operation board Replace indoor controller board if abnormali ty reappears Drain overflow protection operation Malfunction of drain pump D Check if drain up machine works D Suspensive abnormality if drain float 2 Defective drain 2 Check drain function switch is detected to be underwater for 1 Clogged drain pump minute and 30 seconds continuously Clogged drain pipe with drain pump on Defective drain float switch Remove drain float switch connector CN4F Turn off compressor and indoor fan Catch of drain float switch or and check if it is short Switch On with the Drain pump is abnormal if the condition malfunction of moving parts moving part of float switch UP or OPEN with above
23. bers S1 S2 S3 3 Symbols used in wiring diagram above are Q CONNECTOR TERMINAL HEAVY DOTTED LINE FIELD WIRING THIN DOTTED LINE OPTIONAL PARTS 19 Li REFRIGERANT SYSTEM DIAGRAM Strainer 50 Refrigerant GAS pipe connection Flare Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection Condenser evaporator temperature thermistor TH5 p e Flare Pipe temperature Room temperature thermistor liquid thermistor TH1 TH2 m Distributor d 20 6 TROUBLESHOOTING 6 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 2 When removing the indoor controller board hold the edge of the board with care NOT to apply stress on the components When connecting or disconnecting the connectors hold the housing of the connector DO NOT pull the lead wires x Q Lead wires Housing point 6 2 SELF CHECK FUNCTION Wired remote controller 60 1 Turn on the power 2 Press the CHECK button twice 3 Set refrigerant address with TEMP button if system control is used 4 Press
24. defect Open 40C or less board amp When no problems are found in above replace the indoor unit control board Remote controller transmission Contact failure at transmission D Check disconnection or looseness of indoor error EO signal receiving error E4 wire of remote controller unit or transmission wire of remote controller Abnormal if main or sub remote con All remote controllers are set Set one of the remote controllers main if troller can not receive normally any as sub remote controller In there is no problem with the action above transmission from indoor unit of refriger this case is displayed on Check wiring of remote controller ant address 0 for three minutes remote controller and E4 is eee oan Ve aaa Error code EO displayed at LED LED1 LED2 m The number of connecting indoor units 2 Abnormal if sub remote controller could on the outdoor controller circuit maxi cunis 9 not receive for any signal for two min board e The number of connecting remote con utes Error code EO Mis wiring of remote controller troller max 2units 2 Defective transmitting receiving 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 O EO remote controller board or from other circuit of indoor controller board Diagnose remote controllers
25. del 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 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 Ooo O Note Refer to the manual of outdoor unit for the details of display 6 3 SELF DIAGNOSIS ACTION TABLE such as F U and other E Room temperature Defective thermistor 0 9 Check resistance value of thermistor thermistor TH1 characteristics D The unit is in three minute resume 2 Contact failure of connector prevention mode if short open of CN20 on the indoor controller thermistor is detected Abnormal if the board Insert failure unit does not reset normally after three Breaking of wire or contact minutes The unit returns to normal failure of thermistor wiring operation if it has normally reset Defective indoor controller Constantly detected during cooling board drying and heating operation Short 90 C or more P1 Open 40 or less Pipe temperature D Defective thermistor thermistor Liquid TH2 characteristics D The unit is in three minute resume 2 Contact failure of connector prevention mode if short open of CN44 on the indoor controller thermistor is detected Abnor
26. e board Abnormality of super heat due to low discharge temperature 11 Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Current sensor error Other errors Refer to the technical manual for the outdoor unit 1 If the 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 the beeper sounds three times continuously 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 wireless remote controller The continuous buzzer sounds from receiving section of indoor unit Blink of operation lamp On wired remote controller Check code displayed on the LCD the unit cannot be operated properly after the test run has been performed refer to the following table to remove the cause Symptom C Wired remote controller LED 1 2 PCB in outdoor unit qM After LED 1 2 are lighted LED 2 is turned 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 Connector for the outdoor unit s protection device is not connected Reverse or open phase wiri
27. e 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 if LED2 is lit connection failure of remote controller terminal block etc has returned to normal 29 Ooo O 6 5 TEST POINT DIAGRAM 6 5 1 Indoor controller board Fuse 6 3A 250V B 3 E UN i err hee jir ita nos k O Z NO e QO EU E WB i Eo 1 armar 181 x py ed ee E Ta 89 1 1 a E s uis Lat j m E sna r L t D 1 1 m r inii AL E 2 ae i H ri i ae TTE T NW i o ee 1 a p k Ev m dE e Tes a i E 5 m I 3 b eL ci Te a a E T SWE 4 CN2L CN41 Ld Sw2 zm m SW1 JMH 9 WANN ENS LED3 Fa CN90 30 CNO1 SWE SW1 SW2 CN32 CN22 CN51 CN41 CN44 CN4F CN20 CN3C CNMF Voc Vsp Power supply voltage 220 240VAC Emergency operation Model selection Capacity setting Remote start stop adapter For MA remote controller cable con nection 10 13 VDC Between 1 and 3 Centralized control JAMA standard HA terminal A T
28. evel under actual installation condition by surrounding echoes The sound level can be higher by about 2 dB than the displayed level during cooling and heating operation 10 __ O 50 60Hz High 39 Middle SEZ KD71VAQ External static pressure 5Pa 0 0002 ubar od 7 7 riu AM LL M i WW M X M LL LD TERESHOLD OF HEARING FOR CONTINUOUS NOISE EF p e 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz a OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB z N NA NAN lt 50 60Hz gt SEZ KD71VAQ External static pressure 35Pa 0 0002 ubar T 2 Q SN N E wh Mod dle wk FALL LAL APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS E OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB ui 2 Q N WIN WERE L 7 Elie 0 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz NOTE The sound level is measured in an anechoic room where echoes are few when compressor stops The sound may be bigger than displayed level under actual installation condi tion by surrounding echoes The sound level can be higher by about 2 dB than the displayed level during cooling and heating operation 11 50 60Hz e 49 SEZ KD71VAQ External static pressure 15Pa 0 0002 ubar z Q N e Z Z Z Q Q e o
29. frigerant Liquid R410A mm i piping diameter Gas R410A Drain piping diameter ams 5 5 5 3 3 5 i Power source Power input Current Temperature set range Remote controller Airflow direction Fan Type x Quantit External static press Motor type Motor output SEZ KD50VAQ 230V 50Hz 0 07 0 63 19 to 30 67 to 86 _ TEMMEMEMNMEMMENI Sirocco fan x 3 5 15 35 50 DC blushless motor 0 096 Driving mechanism Direct driven Airflow rate Low Mid High 10 0 12 5 15 0 External finish Galvanized External dimension 200 x 900 x 700 HxWxD 7 718 35 716 x 27 916 Net weight Wiring 22 x CCF Gm TEE 3 n 1 6 1 8 06 35 01 4 Flare 06 35 01 4 Flare 912 7 01 2 Flare 915 88 05 8 Flare O D 32 1 9 32 O D 32 1 9 32 Noise level Low Mid High dB lt A gt 30 34 37 30 34 38 measured in anechoic room Insulation material Polystyrene foam Polyethylene foam Urethane foam Air filter PP Honeycomb fabric washable Refrigerant control device SS O Protection devices Fuse 250V 6 3A Heat exchanger Cross fin Aluminum fin and copper tube Varistor ERZV10D471 Terminal block To outdoor unit 3P To wired remote controller 2P Power outlet Standard Document Installation Manual Instruction Book attachment Accessory Drain hose flexible joint Remote Controller Drain hose flexible joint Remote Controller Drain lift up mechanis
30. g different data to be abnormal 30 address continuous times Error code E3 Defective transmitting receiving 0 6 Diagnose remote controller T circuit of remote controller a When RC OK is displayed remote con D Abnormal if indoor controller board could trollers h bl Defective transmitting receiving rovers have no problem not find blank of transmission path rent OF Turn the power off and on again to check E3 Error code E5 circuit of indoor controller When b powe b gair or Indoor controller board receives trans board M o RT a E5 mitted data at the same time compares Noise has entered into trans b When RC NG is displayed replace remote controller troller c When E3 or ERC 00 66 is displayed noise may be causing abnormality the data and when detecting it judges mission wire of remote con different data to be abnormal 30 continuous times Error code E5 27 Indoor outdoor unit communication error Transmitting error Abnormal if 1 receiving is detected 30 times continuously though indoor controller board has transmitted 0 Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board Remote controller control board Abnormal if data cannot be read normal ly from the nonvolatile memory of the E1 remote controller control board Error code E1 or E2 9 Abnormal if
31. hermistor liquid condenser evaporator temperature Float thermistor Thermistor Inlet temperature Indoor outdoor transmission 0 24VDC Fan motor output 1 4 310 340 VDC 5 4 15 VDC 6 4 0 6 5 VDC 7 4 Stop 0 or 15 VDC Run 7 5 VDC 0 15 pulse Drain up mechanism output 200VAC LOSSNAY Wireless remote controller Voltage on the side of PC672 and C955 Same with the voltage between 7 and 4 of CNMF Voltage between the C955 pins 15 VDC Same with the voltage between 5 and 4 of CNMF Voltage between the C626 pins OVDC with the fan stopped 1 6 5VDC with the fan in operation Same with the voltage between 6 and 4 of CNMF Ooo O 6 6 TROUBLE CRITERION OF MAIN PARTS Check method and criterion Room temperature Measure the resistance with a tester thermistor Part temperature 10 C 30 C TH1 Pipe temperature thermistor liquid 8kQ 20kQ 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 PG Pulse output for rotation 31 Ooo O 6 7 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 connect
32. igh measured in anechoic room Insulation material Polystyrene foam Polyethylene foam Urethane foam Air filter PP Honeycomb fabric washable Refrigerant control device Protection devices Fuse 250V 6 3A Heat exchanger Cross fin Aluminum fin and copper tube Varistor ERZV10D471 Terminal block To outdoor unit To wired remote controller 2P Power outlet Standard Installation Manual Instruction Book attachment Drain hose flexible joint Remote Controller Optional parts Drain lift up mechanism 7 Remark o O Note 1 Cooling Heating capacity indicates the maximum value at operation under the following condition Cooling Indoor 27 CD B 19 CW B 81 FD B 66 FW B Outdoor 35 CD B 95 FD B Heating Indoor 20 CD B 68 FD B Outdoor 7 CD B 6 CW B 45 FD B 43 FW B Pipe length 7 5m 24 9 16ft Height difference Om Oft 2 The external static pressure is set to 15 Pa at factory shipment SEE 2 3 5 N 33 ems 2 dB lt A gt j e NOISE CRITERION CURVES SEZ KD25VAQ External static pressure 5Pa 50 60Hz igh 29 0 0002 ubar We PLM lel z z z B 5 Ny gt ph TERESHOLD OF HEARING FOR CONTINUOUS T p ce 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz Kl lhe fe OCTAVE BAND SOUND PRESSURE LE
33. itting receiving circuit of indoor controller board Noise has entered into indoor outdoor unit connecting wire D Defective transmitting receiving circuit of indoor controller board Noise has entered into power supply 9 Noise has entered into outdoor control wire 0 Defective indoor controller board Defective remote controller Mis piping of extension pipes When connected with multiple units Mis wiring of indoor outdoor unit connecting wire When connected with multiple units Detection failure of the indoor unit inlet pipe liquid ther mistor Drain pump failure Drainage failure Clogged drain pump Clogged drain pipe Drain float switch failure Drain float switch is detected 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 Check LED display on the outdoor control cir cuit board Connect A control service tool PAC SK52ST Refer to Outdoor manual D Check disconnection or looseness of indoor outdoor unit connecting wire of indoor unit or outdoor unit Check all the units in case of twin triple 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 Other indoor controller board may have defect in case of twin triple indoo
34. ixing screws on the bottom plate J to remove it Fig 9 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 2 Remove the four fan case fixing screws to take the top half of the fan casing off Ooo O Exercise caution when removing heavy parts 6 Bearing KD50 60 71VAQ model only 1 Removing the bearing 1 Remove the two fixing screws on the bearing cover K to remove it Fig 13 2 Remove the two bearing retainer screws to remove the bearing Fig 14 7 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 two fixing screws on the cover L to remove it Fig 15 4 Removing the Heat exchanger 1 Remove the fixing screws on the heat exchanger M to remove it Fig 16 37 MITSUBISHI ELECTRIC CORPORATION http Global MitsubishiElectric com New publication effective Sep 2012 HWE1008B Specifications subject to change without notice
35. m PAC KEO7DM E Drain lift up mechanism PAC KEO7DM E Note 1 Cooling Heating capacity indicates the maximum value at operation under the following condition Cooling Indoor 27 CD B 19 CW B 81 FD B 66 FW B Outdoor 35 CD B 95 FD B Heating Indoor 20 CD B 68 FD B Outdoor 7 CD B 6 CW B 45 FD B 43 FW B Pipe length 7 5m 24 9 1 6ft Height difference Om Oft 2 The external static pressure is set to 15 Pa at factory shipment Min size of wire Amperage of wire breaker A Refrigerant Liquid R410A mm i piping diameter Gas R410A mmi in Drain piping diameter i 55 II 3 5 eo Co Optional parts Remark SEZ KD71VAQ 230V 50Hz Model Name Power source Power input Current Temperature set range Remote controller Airflow direction Fan Type x Quantit External static press Motor type Motor output Driving mechanism Direct driven Airflow rate Low Mid High 12 0 16 0 20 0 External finish Galvanized External dimension 200 x 1100 x 700 HxWxD 7 7 8 x 43 5 16 x 27 9 16 Net weight Wiring 0 10 0 10 0 84 0 84 19 to 30 67 to 86 17 to 28 63 to 83 o gt gt Sirocco fan x 4 5 15 35 50 DC blushless motor 0 096 1 6 1 8 A 15 i 09 52 03 8 Flare in 915 88 05 8 Flare i O D 32 1 9 32 30 35 40 Min size of wire Amperage of wire breaker Refrigerant Liquid R410A piping diameter Gas R410A Drain piping diameter Noise level Low Mid H
36. mal if the board Insert failure unit does not reset normally after three Breaking of wire or contact minutes The unit returns to normal failure of thermistor wiring operation if it has normally reset Defective refrigerant circuit is Constantly detected during cooling causing thermistor temperature P2 drying and heating except defrosting of 90 C or more or 40 C or operation less Short 90 C or more Defective indoor controller board Open 40C or less Contact failure of drain float switch CN4F D Contact failure of connector D Check contact failure of float switch connec D Extract when the connector of drain float Insert failure tor 30 4 3kO 3 0 If you put force on draw bend the lead wire with measuring resistance value of thermistor breaking of wire or contact failure can be detected 2 Check contact failure of connector CN20 on the indoor controller board Refer to 6 5 Turn the power on again and check restart after inserting connector again Check room temperature display on remote controller Replace indoor controller board if there is abnormal difference with actual room temperature Turn the power off and on again to operate after check 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 6 5 Turn the power on again and check restart
37. ng for the outdoor unit s power terminal block L1 L2 L3 PLEASE WAIT Error code Only LED 1 is lighted gt LED 1 2 blink After about 2 min utes has expired Display messages do not appear ai 9 following power on Incorrect wiring between indoor and outdoor units even when operation switch is Only LED 1 is lighted gt LED 1 2 blinks incorrect polarity of 1 S2 3 ML ONES Ehe Remote controller wire short not light up On the wireless remote controller with conditions above following phenomena takes place No signals from the remote controller are accepted e OPE lamp is blinking 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 0 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 mo
38. oor room temperature and pipe lt condenser evaporator gt temperature thermistor 0 Stop valve is not opened completely Check converse connection of extension pipe or converse wiring of indoor outdoor unit connecting wire 26 Ooo O Abnormality of pipe temperature ther Defective thermistor 0 9 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 Check contact failure of connector CN44 tection mode if short open of thermistor CN44 on the indoor controller on the indoor controller board is detected Abnormal if the unit does board Insert failure Refer to 6 5 not get back to normal within three min Breaking of wire or contact Turn the power on and check restart after inserting connector again Operate in test run mode and check pipe condenser evaporator temperature utes The unit returns to normal opera failure of thermistor wiring tion if it has normally reset Temperature of thermistor is 8 Constantly detected during cooling dry 90 C or more or 40 or less If pipe condenser evaporator tempera ing and heating operation except caused by defective refrigerant ture is extremely low in cooling mode or defrosting circuit high in heating mode refrigerant circuit Short 90C or more Defective indoor controller may have
39. or CNMF for the motor with the power supply on It causes trouble of the indoor controller circuit board and fan motor 3 Self check Symptom The indoor fan cannot turn around Check the fuse FUSE on indoor controller board Check the drain pump DP Replace indoor controller board 1 Did the fuse blow gt Yes gt the resistance between gt Yes gt fan motor MF Uo terminals normal V No Wiring contact check No Contact of fan motor connector CNMF Vl Replace drain pump Is there no contact failure gt No gt 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 Vece DC15V V Is the voltage normal gt Yes gt Replace the fan motor Yes OK Check the operation of fan the operation of fan gt Replace indoor controller board Y NG J Replace indoor controller board OK Check the operation gt V Replace the fan motor 32 DISASSEMBLY PROCEDURE Exercise caution when removing heavy parts 1 Control box 1 Removing the control box cover 1 Remove the two fixing screws on the cover A to remove it 2 A Fig 1 Fig 2 2 Thermistor Intake air 1 Remove the control box cover according to
40. r unit system Turn the power off and on again to check If abnormality generates again replace indoor controller board D Replace indoor controller board Replace remote controller Check the extension pipes for mis piping Check the Indoor outdoor unit connecting wire for mis wiring Check room temperature display on remote controller and indoor pipe liquid tempera ture Refer to the countermeasure on P2 Check if drain up machine works Check drain function Check drain float switch Refer to the coun termeasure on P4 and P5 Ooo O 6 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 15 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 When AC 220 240V is not detected Check the power wiring to outdoor unit and the breaker When AC 220 240 is detected Check below Defective outdoor controller circuit board Check the voltage between outdoor terminal block S1 and S2 e When 220 240 is not detected Check the fuse on outdoor controller circuit board Check the wiring connection When AC 220 240 is detected Check below Power supply of 220 240V is not s
41. room where echoes few when compressor stops The sound may be bigger than displayed level under actual installation condition by surrounding echoes The sound level can be higher by about 2 dB than the displayed level during cooling and heating operation 50 60Hz NOTCH SPL dB LINE 33 SEZ KD35VAQ External static pressure 5Pa High NO Low 23 0 0002 ubar z z z s E e A Z Q A o POA AAA WA LEARN VAPEUR OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE i E 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB a O g o LAA ll nef ee dA oe fe eae nd N lt 50 60Hz gt SEZ KD35VAQ i pe External static pressure 35Pa 80 Q LE 70 1 e z Q A ae a APPROXIMATE TERESHOLD OF HEARING FOR oo 3 12 6 gt jh C eo gt i N e OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB A VAC AAAI Lh oer ne fel oe elo ee oe 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz poe ee lt 50 60Hz gt LINE High 33 SEZ KD35VAQ External static pressure 15Pa wode 28 Low 23 0 0002 ubar AAA A UAA AA ele Z Z Z z gt 5 e o P
42. the clock function of remote controller cannot be operated normally Error code E2 Water leakage This detection is performed during the operation stop heating fan or error stop mode etc other than cooling and dry When a and b are found water leakage occurs a Pipe lt liquid gt temperature inlet tem perature lt 10 C for 30 minutes b When drain float switch is detected to be soaked in the water for 15 minutes or more When drain float switch is detected to be NOT soaked in the water each counting of a and b is cleared When this error is detected the error will not be reset until the main power is PA reset 2500 Indoor outdoor unit communication error Signal receiving error Abnormal if indoor controller board cannot receive any signal normally for six minutes after turning the power on Abnormal if indoor controller board cannot receive any signal normally for three minutes E6 Consider the unit as abnormal under the following condition When two or more indoor units are connected to an outdoor unit indoor controller board cannot receive a signal for three minutes from outdoor controller circuit board a signal which allows outdoor controller circuit board to transmit signals D Contact failure short circuit or mis wiring converse wiring of indoor outdoor unit connecting wire Defective transmitting receiving circuit of indoor controller board 9 Defective transm
43. upplied to indoor Check the voltage between indoor terminal unit block S1 and S2 e When AC 220 240 is not detected Check indoor outdoor unit connecting wire for mis wiring e When AC 220 240 is detected 2 below Defective indoor controller board 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 LEDI 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 using SW1 3 6 on outdoor Short cut of remote controller wires controller circuit board Defective remote controller 300 Remov
44. w Mid High m min 5 5 7 0 9 0 External finish Galvanized External dimension 200 x 700 x 700 HxWxD 7 718 x 27 9 16 x 27 9 16 Net weight 1 6 1 8 Wiring 06 35 01 4 Flare 06 35 01 4 Flare 09 52 03 8 Flare 09 52 03 8 Flare O D 32 1 9 32 O D 32 1 9 32 Noise level Low Mid High l dB lt A gt 23 26 30 23 28 33 measured in anechoic room Insulation material Polystyrene foam Polyethylene foam Urethane foam Air filter PP Honeycomb fabric washable Refrigerant control device fs CMM MEE Protection devices Fuse 250V 6 3A Heat exchanger Cross fin Aluminum fin and copper tube Varistor ERZV10D471 Terminal block To outdoor unit To wired remote controller 2P Standard Installation Manual Instruction Book attachment Drain hose flexible joint Remote Controller Drain hose flexible joint Remote Controller Optional pats Drain lift up mechanism 7 Drain lift up mechanism 7 Remark __ O Note 1 Cooling Heating capacity indicates the maximum value at operation under the following condition Cooling Indoor 27 CD B 19 CW B 81 FD B 66 FW B Outdoor 35 CD B 95 FD B Heating Indoor 20 CD B 68 FD B Outdoor 7 CD B 6 CW B 45 FD B 43 FW B Pipe length 7 5m 24 9 16ft Height difference Om Oft 2 The external static pressure is set to 15 Pa at factory shipment o iil Min size of wire Amperage of wire breaker A Re
45. xternal static pressure 35Pa 220 240V 50 60Hz External static pressure 50Pa 220 240V 50 60Hz 80 80 70 70 60 60 l G A gt Rated point m ad External static pressure Pa External static pressure A 30 30 20 20 10 19 0 M 0 9 Airflow rate m min Airflow rate m min 13 SEZ KD50VAQ SEZ KD50VAQ External static pressure 5Pa 220 240V 50 60Hz External static pressure 15Pa 220 240V 50 60Hz External static pressure Pa External static pressure Pa 8 9 10 11 12 13 14 15 16 8 9 10 11 12 13 14 15 16 Airflow rate m min Airflow rate m min SEZ KD50VAQ SEZ KD50VAQ External static pressure 35Pa 220 240V 50 60Hz External static pressure 50Pa 220 240V 50 60Hz 80 70 pt LAS al 40 30 o E hs SSO BN 8 9 10 11 12 13 15 16 8 9 10 11 12 13 14 15 16 Airflow rate m min Airflow rate m min External static pressure Pa External static pressure Pa 14 SEZ KD60VAQ External static pressure 5Pa 220 240V 50 60Hz External static pressure Pa 9 10 11 12 13 14 15 16 17 18 19 Airflow rate m min SEZ KD60VAQ External static pressure 35Pa 220 240V 50 60Hz 80 IPTE Middle Rated omi 6 External static pressure Pa LLL IL DRILL DK N 10 11 12 16 17 18 1 Airflow rate m min
Download Pdf Manuals
Related Search