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[ Situation ] The compressor will not run (the same state as the thermometer turned off), the product receives remote control
signals normally. The self-diagnosis lamp (LD301) of the outdoor unit blinks once or becomes turned off.
[ Estimated failure locations ]
·
Room temperature thermistor, heat exchanger thermistor
Microcomputer peripheral circuit
[ Diagnosis flow ]
Initiating troubleshooting
3. Failure phenomenon: The compressor will not run.
Is the "timer lamp" (orange) of the indoor unit
blinking?
Yes
Yes
Yes
No
No
No
Check for failures according to the self-
diagnosis display.
Did the self-diagnosis lamp (LD301) of the outdoor
unit blink once or become turned off?
Check for failures according to the self-
diagnosis display.
Remove the connector (CN4) of the room
temperature thermistor and heat exchanger
thermistor and measure the thermistor resistance.
Did the reading roughly agree with the resistance
values indicated in the right-hand figure?
Replace the "room temperature and heat
exchanger thermistors".
Thermistor characteristics (resistance)
Ther
mistor resistance
Thermistor temperature
Replace the "indoor electrical parts".
·
118
Summary of Contents for RAC-25WSE
Page 35: ...MODEL RAC 50WSE 35 ...
Page 39: ...MODEL RAC 25WSE RAC 35WSE OUTDOOR UNIT 39 ...
Page 40: ...MODEL RAC 50WSE OUTDOOR UNIT 40 ...
Page 42: ...MODEL RAK 25 35 50PSEW RAK 25 35 50PSES 42 ...
Page 43: ...MODEL RAC 25WSE RAC 35WSE 43 ...
Page 44: ...MODEL RAC 50WSE 44 ...
Page 67: ...DESCRIPTION OF MAIN CIRCUIT OPERATION RAK 25 35 50PSEW RAK 25 35 50PSES 67 ...
Page 73: ...10 10 10 10 10 DSW1 73 ...
Page 79: ...RL1 RL1 RL2 5 5 5 5 79 ...
Page 85: ...5 5 1 10 11 12 74 74 70 70 74 75 5 1 HIC P W B 74 70 75 85 ...
Page 87: ...2A Fuse DC300 330V 7 7 1 87 ...
Page 88: ...2A DC300 330V 60 100 88 ...
Page 89: ...L N 300 330 L N 50WSE 89 ...
Page 90: ...300 330 C021 C023 500 450V 16V R249 33 ACT IP CUT 30 90 ...
Page 94: ...5 5 1 74 74 70 70 74 75 5 1 HIC P W B 40 41 42 74 70 75 94 ...
Page 96: ...2A Fuse DC300 330V 7 1 7 96 ...
Page 97: ...2A DC300 330V 30 60 97 ...
Page 107: ...92 107 ...
Page 109: ...SELF DIAGNOSIS LIGHTING MODE MODEL RAC 25 35WSE 109 ...
Page 110: ...SELF DIAGNOSIS LIGHTING MODE MODEL RAC 50WSE 110 ...