Mitsubishi Electric SE Series Technical & Service Manual Download Page 87

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DISASSEMBLY PROCEDURE

1. Removing the electrical parts

(1) Remove the 2 screws and the electrical parts cover.

(See Photo 1.)

●

Indoor controller board

●

Transformer

●

Run capacitor

●

Fuse (3.15A)

●

Terminal block

(See Photo 2.)

OPERATING PROCEDURE

PHOTOS

2. Removing the indoor coil thermistor(RT12)

(1) Remove the electrical parts cover.

(See Photo 1.)

(2) Remove the 2 screws and the service panel.

(See Photo 1.)

(3) Remove the thermistor (RT12) from the holder.

(See Photo 3.)

(4) Disconnect the connector (CN112) from the indoor

controller board and pull the lead wire of thermistor
(RT12) out.

Drain pan

Electrical parts cover

Service panel

Front panel

Set screws
(for drain pan)

Fuse

Set screws

Terminal block

Transformer

Run capacitor

Thermistor

(RT12)

Photo 2.

Photo 3.

Photo 1.

SEH-1.6AR.TH SEH-2AR.TH SEH-2.5AR.TH
SEH-1.6AR

.TH

SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH
SE-1.6AR

.TH

SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T
SE-1.6AR

.TH-T

OC281-B-3.qxp 04.2.10 2:23 PM Page 87

Summary of Contents for SE Series

Page 1: ...AR TH T SE 2 5AR SE 2 5AR TH SE 2 5AR TH T New specification table has been added on page 11 for the indoor unit of 60Hz power supply corresponding to multi type outdoor units Please void OC281 REVISED EDITION A This manual does not cover the following outdoor units When servicing them please refer to the service manual No OC282 REVISED EDITION B and this manual in a set SUH 1 6VR TH SUH 1 6VR2 TH...

Page 2: ...1 TH SE 1 6AR TH T SE 2AR TH T SE 2 5AR TH T SE 1 6AR1 TH T Air outlet duct flange Air outlet Air inlet Selecting the either back side or bottom side DSAR SURGE ABSORBER has been added to the products which have been manufactured since April 2000 Chang of WIRING DIAGRAM Page 55 56 Addition of service parts Page 91 93 OC281 B 1 qxp 04 2 10 2 21 PM Page 2 ...

Page 3: ...e of three green lamps lights to indicate mode in effect ON OFF button Pushing button starts oper ation Pushing again stops operation Green lamp remains lit during operation UP and DOWN buttons Temperature control While TEMP green lamps is lit Use UP and DOWN buttons to set desired temperature between 18 and 29 C Timed operation While green TIMER lamp is lit Use UP and DOWN buttons to set timed op...

Page 4: ... to indicate mode in effect ON OFF button Pushing button starts oper ation Pushing again stops operation Green lamp remains lit during operation UP and DOWN buttons Temperature control While TEMP green lamps is lit Use UP and DOWN buttons to set desired temperature between 18 and 29 C Timed operation While green TIMER lamp is lit Use UP and DOWN buttons to set timed operation between one and twelv...

Page 5: ...Model Winding resistance at 20 Single phase 220 240V 50Hz PK6V19 EC WHT BLK 251 4 BLK BLU 19 9 BLU YLW 26 5 YLW BRN 13 2 BRN RED 50 0 Cooling 3 9 3 9 1 7 7 0 7 3 1460 1590 95 90 6 41 6 72 2 67 2 45 Heating 4 1 4 2 6 4 6 8 1350 1460 95 90 5 81 6 22 3 04 2 88 1 65 RH 247VHAT 1200 C R 2 13 C S 3 91 RA6V40 EE WHT BLK 130 4 BLK RED 134 6 1100 270 700 850 605 290 35 43 35 50 720 770 780 820 3 1 MS 56 O ...

Page 6: ... 2VR TH SUH 2VR1 TH SUH 2VR2 TH 59 39 52 810 850 810 845 1 8 MS 32 N 1 O 1 2 1100 270 700 850 605 290 35 3 1 10 10 33 18 Cooling 5 3 5 4 2 1 10 4 9 9 2270 2330 99 97 9 72 9 27 2 33 2 32 Heating 5 7 5 8 9 4 9 1 2050 2110 99 97 8 72 8 47 2 78 2 75 NH 38VMDT 1700 C R 1 07 C S 2 26 PK6V32 EC WHT BLK 161 9 BLK BLU 50 3 BLU YLW 18 7 YLW BRN 8 0 BRN RED 39 2 RA6V50 OF WHT BLK 116 4 BLK RED 111 1020 52 58...

Page 7: ...igerant filling capacity R 22 Thermistor Weight Special remarks Model Output Winding resistance at 20 Model Winding resistance at 20 Model Winding resistance at 20 SU 1 6NR TH Single phase 220V 60Hz Single phase 220 240V 50Hz Cooling 780 PK6V19 ED WHT BLK 251 4 BLK BLU 19 9 BLU YLW 26 5 YLW RED 63 2 RA6V40 EE WHT BLK 130 4 BLK RED 134 6 SU 1 6VR TH SU 1 6VR TH T SE 1 6AR TH SE 1 6AR1 TH SE 1 6AR T...

Page 8: ...vel Hi Fan speed Hi Fan speed regulator Outdoor unit Outdoor unit Refrigerant filling capacity R 22 Thermistor Weight Special remarks Model Output Winding resistance at 20 Model Winding resistance at 20 Model Winding resistance at 20 Cooling Single phase 220 240V 50Hz 4000 4100 1 5 780 7 7 1640 1740 97 94 36 39 7 11 7 00 0 59 0 60 2 44 2 36 RH 277VHAT 1300 C R 1 80 C S 3 00 PK6V19 ED WHT BLK 251 4...

Page 9: ...del Winding resistance at 20 Model Winding resistance at 20 SU 2NR TH Single phase 220V 60Hz Single phase 220 240V 50Hz Cooling 2 6 1020 PK6V32 ED WHT BLK 161 9 BLK BLU 50 3 BLU YLW 18 7 YLW RED 47 2 RA6V50 OF WHT BLK 116 4 BLK RED 111 SU 2VR TH SU 2VR TH T SU 2VR1 TH SU 2VR1 TH T SE 2AR TH SE 2AR TH SE 2AR TH T 5900 11 5 2500 99 10 66 2 36 53 890 860 1 65 MS 32 N 1 O 0 85 NH 33NCDT 1500 C R 0 92 ...

Page 10: ...e at 20 Model Winding resistance at 20 Model Winding resistance at 20 SU 2 5NR TH Single phase 220V 60Hz Single phase 220 240V 50Hz Cooling 3 2 1200 PK6V50 ED WHT BLK 101 1 BLK BLU 56 1 BLU YLW 14 7 YLW RED 34 9 RA6V60 AB WHT BLK 81 1 BLK YLW 92 2 YLW RED 102 2 SU 2 5VR TH SU 2 5VR TH T SE 2 5AR TH SE 2 5AR TH SE 2 5AR TH T 7000 13 6 2920 98 12 52 2 40 54 980 930 NH 38NBDT 1700 C R 0 83 C S 1 83 5...

Page 11: ...n motor Special remarks Electrical data Indoor model Indoor unit power supply 780 0 26 PK6V19 EC 35 740 SEH 1 6AR SEH 2AR SEH 2 5AR WHT BLK 251 4 BLK BLU 19 9 BLU YLW 26 5 YLW BRN 13 2 BRN RED 50 0 1 020 0 34 PK6V32 EC 39 890 WHT BLK 161 9 BLK BLU 50 3 BLU YLW 18 7 YLW BRN 8 0 BRN RED 39 2 1 200 0 45 PK6V50 EC 43 980 WHT BLK 101 1 BLK BLU 56 1 BLU YLW 14 7 YLW BRN 6 7 BRN RED 28 2 K h A Ω mm kg dB...

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Page 49: ...0 0 58 0 46 0 34 0 62 0 50 0 38 0 26 0 54 0 42 0 30 0 70 0 58 0 46 0 34 0 22 0 74 0 62 0 50 0 38 0 26 0 78 0 66 0 54 0 42 0 30 0 82 0 70 0 58 0 46 0 34 0 86 0 74 0 62 0 50 0 38 0 90 0 78 0 66 0 54 0 42 0 94 0 82 0 70 0 58 0 46 3037 3124 3037 3124 3270 3037 3124 3270 3037 3124 3270 3358 3124 3270 3358 3037 3124 3270 3358 3475 3037 3124 3270 3358 3475 3037 3124 3270 3358 3475 3037 3124 3270 3358 347...

Page 50: ...0V 50Hz SEH 1 6AR SUH 1 6VR CAPACITY 4 1 kW INPUT 1350 W OUTDOOR W B INDOOR 10 D B Q INPUT 5 Q INPUT 0 Q INPUT 5 Q INPUT 10 Q INPUT 15 Q INPUT 20 Q INPUT 15 21 26 3 59 3 42 3 08 1333 1435 1538 4 33 4 10 3 82 1599 1702 1804 5 07 4 85 4 50 1804 1886 1989 5 81 5 53 5 24 1948 2030 2132 6 56 6 27 5 99 2071 2132 2235 7 24 6 95 6 67 2132 2194 2296 7 98 7 67 7 41 2173 2276 2358 SEH 2AR SUH 2VR CAPACITY 5 ...

Page 51: ...SEH 1 6AR SUH 1 6VR CAPACITY 4 2 kW INPUT 1460 W OUTDOOR W B INDOOR 10 D B Q INPUT 5 Q INPUT 0 Q INPUT 5 Q INPUT 10 Q INPUT 15 Q INPUT 20 Q INPUT 15 21 26 3 65 3 48 3 13 1372 1477 1583 4 41 4 18 3 89 1646 1751 1857 5 16 4 93 4 58 1857 1941 2047 5 92 5 63 5 34 2005 2089 2194 6 67 6 38 6 09 2131 2194 2300 7 37 7 08 6 79 2194 2258 2363 8 12 7 80 7 54 2237 2342 2427 SEH 2AR SUH 2VR CAPACITY 5 8 kW INP...

Page 52: ... NOTCH NOISE CRITERION CURVES UNIT External static pressure 30Pa 1 5m MICROPHONE Ambient temperature 27 Test conditions are based on JIS Z8731 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR BAND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 SEH 2 5AR SE 2 5AR Hi L...

Page 53: ...tain a working service area from the ceiling 20 mm or more Access door Electrical parts box Suspension bolt pitch Suspension bolt pitch Drain plug R1 male Refrigerent pipe liquid 6 35 SEH 1 6 2AR TH SEH 1 6AR1 TH SE 1 6 2AR TH SE 1 6AR1 TH SE 1 6 2AR TH T SE 1 6AR1 TH T 9 52 SEH 2 5AR TH SE 2 5AR TH SE 2 5AR TH T Refrigerent pipe gas 12 7 SEH 1 6AR TH SEH 1 6AR1 TH SE 1 6AR TH SE 1 6AR1 TH SE 1 6A...

Page 54: ... 28 27 26 25 24 23 22 21 20 19 18 TIMER TEMP TIMER TEMP UP DOWN POWER COOL ON OFF MODE SELECT FAN SPEED TIMER MODE DRY HEAT HIGH LOW AUTO STOP START Exposed remote controller cable Cable can be connected only to the top of the remote controller Right side left side and buttom are not possible g Remote controller cable Conduit tube local arrangement Switch box local arrangement Set screw match with...

Page 55: ...C BOARD NR11 52C F11 4 3 2 1 BLU YLW YLW BLU SR144 LDFH BLK BLK 8 LDCOM LDC11 LDC12 LDFL LDFM LDFVL SR142 SR143 SR141 GRN YLW WHT ORN RED BRN BRN WHT 7 5 6 1 2 3 4 C11 RED BLU ORN MF 2 W SR141 SR144 RT11 TB TERMINAL BLOCK RT12 INDOOR COIL THERMISTOR HIC1 DC DC CONVERTER NR11 MF 52C F11 SYMBOL NAME NAME C11 SYMBOL FAN MOTOR CAPACITOR SOLID STATE RELAY FUSE 3 15A COMPRESSOR CONTACTOR DSAR SURGE ABSO...

Page 56: ...LDC12 LDFL LDFM LDFH SR142 SR143 SR144 GRN YLW WHT ORN RED BLK BLK WHT 4 5 6 1 2 3 7 ELECTRONIC CONTROL P C BOARD NR11 C11 52C RED ORN F11 4 3 MF HIC1 SR142 SR144 RT11 TB TERMINAL BLOCK RT12 INDOOR COIL THERMISTOR HIC1 DC DC CONVERTER NR11 MF 52C F11 SYMBOL NAME NAME C11 SYMBOL FAN MOTOR CAPACITOR SOLID STATE RELAY FUSE 3 15A COMPRESSOR CONTACTOR ROOM TEMPERATURE THERMISTOR DSAR SURGE ABSORBER VAR...

Page 57: ...charge Pressure Regulator Reversing INDOOR UNIT SEH 1 6AR TH SEH 1 6AR1 TH OUTDOOR UNIT SUH 1 6VR TH SUH 1 6VR2 TH Indoor heat exchanger Outdoor heat exchanger Distributor With strainer Flared connection Room temperature thermistor RT11 Indoor coil thermistor RT12 Defrost thermistor RT61 Flared connection Stop valve Stop valve with service port 100 Strainer Capillary tube 2VR 1 4 0X 2 4XL660 2VR2 ...

Page 58: ...nection Ball valve with service port Ball valve 100 Strainer 3 Strainer 50 Strainer 50 Strainer 2 100 Capillary tube 4 0x 2 0xL410 Refrigerant flow in cooling Compressor Accumulator Muffler Reversing valve Refrigerant flow in heating Refrigerant pipe 15 88 Option with heat insulator Refrigerant pipe Option 9 52 with heat insulator Discharge Pressure Regulator SEH 2 5AR TH SUH 2 5VR TH OC281 B 2 qx...

Page 59: ... Capillary tube 3 0x 2 0xL100 Capillary tube 3 0x 2 0xL700 Restrictor valve Refrigerant flow Compressor Refrigerant pipe 15 88 Option with heat insulator Refrigerant pipe Option 6 35 with heat insulator Accumulator Room temperature thermistor RT11 Indoor coil thermistor RT12 Discharge pressure regulator INDOOR UNIT SE 2AR TH OUTDOOR UNIT SU 2NR TH INDOOR UNIT OUTDOOR UNIT Indoor heat exchanger Out...

Page 60: ...50 Strainer 50 Capillary tube 3 0x 2 0xL570 Restrictor valve Refrigerant flow Compressor Accumulator Refrigerant pipe 15 88 Option with heat insulator Refrigerant pipe Option 6 35 with heat insulator Room temperature thermistor RT11 Indoor coil thermistor RT12 INDOOR UNIT SE 2AR TH SE 2AR TH T OUTDOOR UNIT SU 2VR TH SU 2VR1 TH SU 2VR TH T SU 2VR1 TH T INDOOR UNIT OUTDOOR UNIT Dis pressure regulato...

Page 61: ...m in Gas Liquid Length m ft A Service Ref Indoor unit SEH 1 6AR TH SEH 1 6AR1 TH SEH 2AR TH SEH 2 5AR TH SE 1 6AR TH SE 1 6AR1 TH SE 1 6AR TH T SE 1 6AR1 TH T SE 2AR TH SE 2AR TH SE 2AR TH T SE 2 5AR TH SE 2 5AR TH T SUH 1 6VR TH SUH 1 6VR2 TH SUH 2VR TH SUH 2VR1 TH SUH 2VR2 TH SUH 2 5VR TH SU 1 6NR TH SU 1 6VR TH SU 1 6VR2 TH SU 1 6VR TH T SU 1 6VR2 TH T SU 2NR TH SU 2VR TH SU 2VR1 TH SU 2VR TH T...

Page 62: ... for one or two minutes Make sure the pointer of the gauge manifold valve remains in the same position After refrigerant pipes are connected and evacuated fully open all stop ball valves on gas and liquid pipe sides Operating without fully opening lowers the performance and causes trouble Pipe length 7m maximum No gas charge is needed Pipe length exceeding 7m Charge the prescribed amount of gas Re...

Page 63: ... How to measure the indoor air wet bulb dry bulb temperature difference 1 Attach at least 2 sets of wet and dry bulb thermometers to the indoor air inlet as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed is high 2 Attach at least 2 sets of wet and dry bulb thermometers to the outdoo...

Page 64: ...E 1 6AR 1 TH T 9 3 8 5 7 7 7 0 6 3 5 6 8 6 7 9 7 4 6 5 5 9 5 2 SEH 1 6AR TH SEH 2AR TH SEH 2 5AR TH SEH 1 6AR TH SEH 2AR TH SEH 2 5AR TH 9 4 8 6 7 8 7 1 6 3 5 6 8 7 8 0 7 3 6 6 5 9 5 3 SEH 1 6AR 1 TH 9 3 8 5 7 7 7 0 6 3 5 6 22 3 20 6 18 9 17 2 15 4 13 7 20 6 19 0 17 5 15 9 14 3 12 7 12 0 10 3 10 0 9 1 8 3 7 5 6 7 6 0 22 9 21 1 19 4 17 6 15 8 14 1 12 3 10 6 11 1 9 5 SEH 1 6AR 1 TH 23 1 21 4 18 6 17...

Page 65: ...international system of units SI unit system The converted score against the traditional unit system can be gotten according to the formula below 1 MPa 10 2 kgf f f 0 7 0 6 0 5 0 4 0 3 0 2 15 18 20 25 30 32 35 50 60 70 Ambient temperature Ambient humidity Outdoor low pressure 10 9 8 7 6 5 15 18 20 25 30 32 35 50 60 70 Ambient temperature Ambient humidity Outdoor unit current A 240V 220V MPa G 7 6 ...

Page 66: ...ty Outdoor unit current A MPa 7 6 4 3 2 5 kgf F SE 2 5AR TH SU 2 5NR TH 0 8 0 7 0 6 0 5 0 4 0 3 15 18 20 25 30 32 35 50 60 70 Ambient temperature Ambient humidity Outdoor low pressure 8 7 6 5 4 3 15 18 20 25 30 32 35 50 60 70 Ambient temperature Ambient humidity Outdoor unit current A 8 7 5 6 4 3 MPa kgf F 220V SE 1 6AR TH SE 1 6AR1 TH SU 1 6NR TH SEH 2 5AR TH SUH 2 5VR TH 240V 220V 0 7 0 6 0 5 0 ...

Page 67: ... 240v SE 2AR TH SU 2VR TH SU 2VR1 TH SE 2AR TH T SU 2VR TH T SU 2VR1 TH T 0 7 0 6 0 5 0 4 0 3 0 2 15 18 20 25 30 32 35 50 60 70 Ambient temperature Ambient humidity Outdoor low pressure 11 10 9 8 7 6 15 18 20 25 30 32 35 50 60 70 Ambient temperature Ambient humidity Outdoor unit current A 220V MPa G 7 6 4 3 2 5 kgf F G 240v SE 2 5AR TH SU 2 5VR TH SE 2 5AR TH T SU 2 5VR TH T SE 1 6AR1 TH SU 1 6VR2...

Page 68: ... 0 2 5 10 15 20 25 Ambient temperature Outdoor unit current A HEAT operation Condition Indoor Dry bulb temerature 20 0 Wet bulb temerature 14 5 Outdoor Dry bulb temerature 7 15 20 Wet bulb temerature 6 12 14 5 240V 220V 10 9 8 7 6 5 0 2 5 10 15 20 25 Ambient temperature Outdoor unit current A 240V 220V SEH 1 6AR TH SUH 1 6VR TH SEH 1 6AR1 TH SUH 1 6VR2 TH SEH 1 6AR TH SUH 1 6VR TH SEH 1 6AR1 TH SU...

Page 69: ...Corrected Air flow 1 1 0 9 1 0 0 8 10 5 15 20 Correction factor Capacity Input Cooling Air flow K X Corrected Airflow 1 1 0 9 1 0 0 8 5 10 15 20 25 Correction factor Capacity Input Cooling Air flow K X Corrected Air flow 1 1 0 9 1 0 0 8 10 15 20 25 30 Correction factor Capacity Input Cooling Air flow K X 0 9 1 0 1 2 1 1 1 3 10 15 20 25 30 Correction factor Heating Air flow K X 1 0 1 1 1 2 0 8 0 9 ...

Page 70: ...e 80 60 40 20 0 15 5 10 20 25 External static pressure Pa 1Pa 0 1mmAq Fan Performance SE 2AR TH 60Hz Corrected Airflow Capacity Input 1 0 1 1 1 2 0 8 0 9 5 10 15 20 25 Correction factor Air flow K X Air flow K X Recommended range 80 100 60 40 20 0 15 5 10 20 25 External static pressure Pa 1Pa 0 1mmAq Fan Performance SE 2 5AR TH 60Hz Corrected Air flow Capacity Input 0 8 0 9 1 1 1 0 1 2 5 10 15 20 ...

Page 71: ...25 External static pressure Pa 1Pa 0 1mmAq Fan Performance SE 1 6AR TH 50Hz SE 1 6AR1 TH SE 1 6AR TH T SE 1 6AR1 TH T Corrected Air flow Capacity Input 1 0 1 2 1 3 1 1 0 8 0 9 5 10 15 20 Correction factor Air flow K X Air flow K X Recommended range 80 100 60 40 20 0 15 5 10 20 25 External static pressure Pa 1Pa 0 1mmAq Fan Performance SE 2 5AR TH 50Hz SE 2 5AR TH T Corrected Air flow Capacity Inpu...

Page 72: ... cancelled and when compressor restarts time counting starts from the beginning Time counting also stops temporarily when the indoor fan speed becomes High or the room temperature exceeds 26 C However when two of the above conditions b And c are satisfied again time accumulation is resumed How to operate 1 Press POWER ON OFF button 2 Press MODE SELECT button to set operation mode to COOL 3 Check l...

Page 73: ...F OFF ON ON ON ON ON ON 1 Setting temperature Follow the right chart with according to the initial room temperature When the room temperature is 13 or under dry operation does not work 2 ON OFF control When the room temperature is 23 C or over Compressor operates by temperature control and time control 1 Set temperature is controlled to fall 2 C above from initial set temperature 2 When the thermo...

Page 74: ...O STOP START g TEMP 1 Compressor control 1 3minute time delay To prevent overload the compressor will not start within 3minutes after stop 2 The compressor runs when the room temperature is higher than the set temperature The compressor stops when the room temperature is equal to or higher than the set temperature w 4degrees up control During heat operation lower the room temperature for 4degrees ...

Page 75: ...t speed When the indoor coil temperature is less than 37 C the fan speed is controlled by time as below Time condition Indoor fan speed less than 2 minutes Low 2 minutes or more High The upper limit of the fan speed is the set speed If the thermostat turns off this operation changes to flow soft control 3 Flow soft control After the thermostat turns off the indoor fan operates at VLo NOTE When the...

Page 76: ...ating conditions When the condition d or e is satisfied the defrosting operation stops d The defrost thermistor RT61 reads 3 1 C or more e The defrosting time exceeds 10 minutes NOTE w When the indoor coil thermistor reads above 18 C indoor fan operates at VLo for 30 seconds w When the indoor coil thermistor reads 18 C or less the indoor fan stops Defrosting time chart Defrost thermistor 3 1 or mo...

Page 77: ...1 While lamp is OFF press TIMER MODE button and lamps turn ON 2 Set the time for the AUTO START timer with the UP or DOWN button NOTE The time setting is in 1 hour units up to 12 hours 3 With the lapse of time the timer lamps turn OFF one by one showing the remain ing time 4 To cancel the AUTO START timer and keep the unit OFF press the TIMER MODE button To cancel the AUTO START timer and start op...

Page 78: ...o restart 2 COMPULSORY DEFROSTING MODE FOR SERVICE By short circuit of the connector JP607 and R853 on the deicer P C board of the outdoor unit defrosting mode can be accomplished regardless of the defrost interval restriction Defrost thermistor RT61 must be below 3 3 DEFROST TERMINATION CHANGE JPC when the JPC wire of the deicer P C board of the outdoor unit is cut the defrost interval time will ...

Page 79: ...rised unit the next trouble occurs even when the breaker turns OFF To clear the memory press the UP and DOWN buttons simultaneously for more than two seconds during the test run 4 All buttons except the POWER ON OFF button are unavailable during the self diagnostic mode 5 To release the self diagnostic mode press the POWER ON OFF button TEMP 12 11 10 9 8 7 6 5 1 2 3 4 Indicates that the unit is in...

Page 80: ...cer P C board out Trouble of the Indoor P C board Exchange the Indoor P C board 27 Indoor coil thermistor Mis connecting of the Indoor coil thermistor Reinsert the connector CN112 Trouble of the Indoor coil thermistor Room temperature thermistor Trouble of the Indoor P C board Check the resistance value of the thermistor Mis connecting of the room temperature thermistor Exchange the Indoor P C boa...

Page 81: ...the remote controller Wiring between the indoor and outdoor is coming off Check the wiring out between the indoor and outdoor Difference of wiring polarity between the indoor and outdoor Check the deicer P C board out Trouble of the deicer P C board Not rotating the fan in the indoor unit Trouble of the contactor 52C1 Trouble of the compressor MC and out door fan motor MF Exchange the contactor Ch...

Page 82: ...l thermistor Measure the resistance of room temperature thermistor Indoor controller board is defective Check the room temperature thermistor Check the indoor coil thermistor Turn off the power supply and turn it on again to operate the unit in cooling mode Is the connector CN113 on the indoor controller board connected Connection is defective Connection is defective Is the connector CN112 on the ...

Page 83: ... supply and check the relay connector for indoor fan motor visually Indoor fan motor is defective Is the relay connector for indoor fan motor connected Indoor controller board is defective Is the resistance 0 short circuit or open circuit Yes Is the varistor on the indoor controller board burnt No Is the wiring between the remote controller and the remote controller interface correct No Yes Yes Is...

Page 84: ...ce K 4 Test point of P C board 1 Indoor electronic control P C board Fan motor power supply 220 240V AC 7 5 6 4 3 2 1 8 Lo 60Hz Hi Fuse 250V AC 3 15A Power supply input 220 240V AC 12V DC 5V DC Time short point Indoor coil thermistor RT12 VLo Lo 50Hz Room temperature thermistor RT11 OC281 B 3 qxp 04 2 10 2 23 PM Page 84 ...

Page 85: ...emote controller interface P C board To Indoor electronic control P C board To REMOTE CONTROLLER JP15 0V JP16 12V DC JP17 5V DC AUTO RESTART FUNCTION 4degrees up Function OC281 B 3 qxp 04 2 10 2 23 PM Page 85 ...

Page 86: ... 2Ω 241 4 261 2Ω BLK BLU 48 3 52 3Ω 19 0 20 6Ω BLU YLW 17 8 19 4Ω 25 4 27 5Ω YLW BRN 7 6 8 3Ω 12 6 13 7Ω BRN RED 37 6 40 7Ω 47 9 51 9Ω Inner protector p SEH 1 6AR TH SEH 2AR TH SEH 2 5AR TH SEH 1 6AR1 TH SE 1 6AR TH SE 2AR TH SE 2 5AR TH SE 1 6AR1 TH SE 1 6AR TH T SE 2AR TH T SE 2 5AR TH T SE 1 6AR1 TH T SEH 2 5AR 97 0 105Ω 53 8 58 3Ω 14 0 15 3Ω 6 3 6 9Ω 27 0 29 3Ω BLK RED ORN YLW BLU WHT GRN YLW ...

Page 87: ...rvice panel See Photo 1 3 Remove the thermistor RT12 from the holder See Photo 3 4 Disconnect the connector CN112 from the indoor controller board and pull the lead wire of thermistor RT12 out Drain pan Electrical parts cover Service panel Front panel Set screws for drain pan Fuse Set screws Terminal block Transformer Run capacitor Thermistor RT12 Photo 2 Photo 3 Photo 1 SEH 1 6AR TH SEH 2AR TH SE...

Page 88: ... 12 screws See Photo 1 3 Disconnect the fan motor connector from the indoor controller board See Photo 2 4 Remove the thermistor RT11 from the fan casing See Photo 4 5 Undo the 4 claws and remove the fan claws down side Either left or right See Photo 4 6 Remove the motor bands A screw each on left and right See Photo 4 7 Disconnect the earth wire from the fan motor leg See Photo 5 8 Remove the fan...

Page 89: ... Remove the Under flange at heat exchanger side 16 screws See Photo 6 3 Remove the 4 screws of heat exchanger 2 screws each on left and right See Photo 7 4 Remove the service panel 3 screws See Photo 7 5 Put the heat exchanger down to the fan motor and pull it toward you See Photo 7 Screws Under flange Screws for heat exchanger Service panel Screws for service panel Heat exchanger Photo 6 Photo 7 ...

Page 90: ... RIGHT LEG E07 039 086 E07 039 500 E02 179 505 E07 039 300 E07 040 300 E07 041 300 E07 039 308 E07 039 000 E07 039 700 E07 039 307 E07 039 620 E07 040 620 E07 041 620 E07 051 085 E07 039 293 E07 039 809 E07 039 290 E07 039 808 Drawing No MF MF MF RT11 RT12 PK6V19 EC PK6V32 EC PK6V50 EC SEH 1 6 SEH 2 AR TH AR TH AR1 TH SEH 2 5 2PCS SET 1 2 2 1 1 1 1 1 1 1 1 2 1 2 1 2 2 1 1 1 1 1 1 1 1 2 1 2 1 2 2 1...

Page 91: ...ELECTRONIC CONTROL P C BOARD ELECTRONIC CONTROL P C BOARD FUSE COMPRESSOR CONTACTOR TERMINAL BLOCK TERMINAL BLOCK SURGE ABSORBER VARISTOR CONTROLLER COVER E07 027 089 E07 039 087 E07 027 088 E07 039 426 E07 039 454 E07 039 450 E07 040 450 E07 041 450 E02 127 382 E02 138 340 E02 199 374 E02 367 377 E02 466 383 E02 085 385 E07 039 449 F11 52C TB TB DSAR NR11 SEH 1 6 SEH 2 SEH 2 5 AR TH AR TH AR1 TH ...

Page 92: ...1 6 SE 2 5 SE 2 AR TH AR TH T AR TH AR TH T AR1 TH AR1 TH T E07 039 086 E07 039 500 E02 179 505 E07 051 300 E07 052 300 E07 053 300 E07 039 308 E07 039 000 E07 039 700 E07 039 307 E07 039 620 E07 040 620 E07 041 620 E07 051 085 E07 039 293 E07 039 809 E07 039 290 E07 039 808 PK6V19 ED PK6V32 ED PK6V50 ED 1 2 2 1 1 1 1 1 1 1 1 2 1 2 1 2 2 1 1 1 1 1 1 1 1 2 1 2 1 2 2 1 1 1 1 1 1 1 1 2 1 2 2PCS SET S...

Page 93: ...LLER COVER F11 52C TB TB DSAR NR11 250 3 15A 3 2 N L N No Parts No Parts name Specification Remarks Drawing No Unit Amount Wiring Diagram Symbol Recom mended Q ty Q ty set Price E07 027 089 E07 039 087 E07 027 088 E07 027 426 E07 051 454 E07 051 450 E07 052 450 E07 053 450 E02 127 382 E02 138 340 E02 229 375 E02 367 377 E02 466 383 E02 085 385 E07 039 449 SE 1 6 SE 2 SE 2 5 AR TH AR TH T AR1 TH AR...

Page 94: ...E 1 6AR1 TH T SE 2AR TH T SE 2 5AR TH T Models PAC 1000 FT Applied unit SEH 1 6AR TH SEH 1 6AR1 TH SE 1 6AR TH SE 1 6AR1 TH SE 1 6AR TH T SE 1 6AR1 TH T SEH 2AR TH SE 2AR TH SE 2AR TH T Models Pipe length Pipe size O D mm in Cross section A Gas 12 7 1 2 15 88 5 8 6 35 1 4 27 31 21 27 0 150 45 400 120 0 150 45 400 120 B liquid Insulation C D 3m 5m 7m 10m 15m 3m 5m 7m 10m 15m MAC 680PI MAC 681PI MAC...

Page 95: ...Related Links Model Number SE 2AR TH SE 1 6 2 5_Parts_Catalog_ OC281B SE 1 6 2 5_Service_Manual_ OC281B ...

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Mitsubishi Electric SE Series, Technical & Service Manual

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