Mitsubishi Electric PU(H)Y-P250YGM-A, Service Handbook

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[
IX
Troubleshooting ]
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
1102 1202 -
Abnormal discharge air temperature,
Abnormal discharge temperature sensor
O
1301 - - Abnormal low pressure O
1302 1402 - Abnormal high pressure O
1500 1600 -
Excessive or insufficient refrigerant
(Overflow of the accumulator)
O
- 1605 - Preliminary suction pressure abnormality O
2503 - -
Drain pump failure
Float switch trip
O
4103 - - Reverse phase/open phase O
4108 4158 - Overcurrent protection (51C2) (No.2 Comp) O
4109 - - Abnormal fan O
4115 - -
Power supply sync signal abnormality
Frequency abnormality
O
4220
4225
(Note)
4320
4325
(Note)
[108] Bus voltage drop (S/W detection) O
[109] Bus voltage rise (S/W detection) O
[110] Bus voltage abnormality (H/W detection) O
[111] Logic error O
4230
4235
(Note)
4330
4325
(Note)
- Heatsink overheat protection (THHS abnormality) O
4240
4245
(Note)
4340
4345
(Note)
- Overload protection O
4250
4255
(Note)
4350
4355
(Note)
[101] IPM error O
[102] ACCT overcurrent breaker trip (H/W detection) O
[103] DCCT overcurrent breaker trip (H/W detection) O
[104] IPM short/grounding abnormality O
[105] Overcurrent error due to short-circuited motor O
[106]
Instantaneous overcurrent breaker trip
(S/W detection)
O
[107] Effective overcurrent breaker trip (S/W detection) O
4260
4265
(Note)
436X
(No er-
ror his-
tory)
- Cooling fan abnormality O
Outdoor unit
Indoor unit
Remote controller