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[ 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".
[ 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
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Summary of Contents for RAC-PH18WHLAE
Page 2: ... 2 R410A ...
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Page 59: ... RAC PH18WHLAE RAC PH24WHLAE 59 ...
Page 60: ... 02 5 6 3 3 5 6 3 3 60 ...
Page 61: ...7RS VLGH 0 1 3 02 5 3 5 3 61 ...
Page 62: ... RWWRP VLGH 0 1 3 02 5 3 5 3 62 ...
Page 63: ... 63 ...
Page 64: ...7RS VLGH RWWRP VLGH 5 3 02 5 3 5 3 64 ...
Page 65: ...AX 20L720 AX20L800 V130 65 ...
Page 84: ...0 V Q211 84 ...
Page 85: ...4 5 5 5 5 85 ...
Page 87: ... 5 5 1 1 5 5 2 3 1 3 2 R671 87 ...
Page 88: ...5 88 ...
Page 89: ... 89 ...
Page 90: ...CN9 36 35 34 33 47 46 46 44 1 90 ...
Page 91: ...R800 Microcomputer 91 ...
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Page 109: ... 1 1 1 1 1 1 1 1 109 ...
Page 110: ...Procedure for Disassembly and Reassembly 1 2 3 4 110 ...
Page 111: ...5 6 7 8 111 ...
Page 114: ... 114 ...
Page 115: ... 1 115 ...
Page 116: ...Lighting mode of the seIf diagnosis Iamp Lighting mode of the self diagnosis lamp 2 116 ...
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Page 126: ... 5 5 126 ...
Page 127: ...A 127 ...
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Page 141: ... R410A 141 ...
Page 142: ... 142 ...
Page 143: ...RAC PH18WHLAE 1 2 12 7 mm 1 2 1 2 RAC PH24WHLAE 1 4 6 35 mm 5 8 15 88 mm 5 8 1 4 and 1 2 143 ...
Page 144: ... 0 0 0 0 8 144 ...
Page 147: ... 0 7 0 7 147 ...
Page 150: ... PM NO 0764E 5 6 3 P 5 3 W 5 6 3 P 5 3 W RKQVRQ RQWUROV LWDFKL LU RQGLWLRQLQJ QF 7 3824 150 ...