Mitsubishi Electric PUHY-P120YHMU-A, Service Manual

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[
IX
Troubleshooting ]
- 149 - HWE0804A GB
IX
Troubleshooting
[1] Error Code Lists
Error
Code
Prelimi-
nary
error
code
Error
(prelim-
inary)
detail
code
Error code definition
Searched unit
Notes
0403
4300
4305
01
05
(Note)
Serial communication error O
0900 - - Test run O
1102 1202 - Discharge temperature fault O
1301 - - Low pressure fault O
1302 1402 - High pressure fault O
1500 1600 - Refrigerant overcharge O
- 1605 - Preliminary suction pressure fault O
2500 - - Drain sensor submergence O
2502 - - Drain pump fault O
2503 - - Drain sensor (Thd) fault O O
2600 - - Water leakage O
2601 - - Water supply cutoff O
4102 4152 - Open phase O
4106 - - Transmission power supply fault O
4115 - - Power supply signal sync error O
4116 - - RPM error/Motor error O O
4220
4225
(Note)
4320
4325
(Note)
[108] Abnormal bus voltage drop O
[109] Abnormal bus voltage rise O
[111] Logic error O
[131] Low bus voltage at startup O
4230 4330 - Heatsink overheat protection O
4240 4340 - Overload protection O
4250
4255
(Note)
4350
4355
(Note)
[101] IPM error O
[104] Short-circuited IPM/Ground fault O
[105] Overcurrent error due to short-circuited motor O
[106] Instantaneous overcurrent O
[107] Overcurrent O
4260 - - Heatsink overheat protection at startup O
5101 1202 -
Temperature sensor
fault
Return air temperature
(TH21)
O
OA processing unit inlet
temperature (TH4)
O
Outdoor unit
Indoor unit
LOSSNAY
Remote controller