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

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[
IX
Troubleshooting ]
Error Code
Error definition and error
detection method
Cause Check method and remedy
4250
4255 IPM error
(Detail code
101) When an error signal of
IPM is detected In the case of 4250
(1) Inverter output related
(2) Same as 4230 error Same as 4230 error
In the case of 4255
(1) Fan motor abnormality
(2) FAN INV board failure Refer to 9 [4]-6-(2) [6].
Refer to 9 [4]-6-(2) [7].
ACCT overcur-
rent breaker
trip
(Detail code
102)
DCCT over-
current break-
er trip
(Detail code
103)
Overcurrent
breaker trip
(Detail code
106,107) When overcurrent break
(94 Apeak or 35 Arms) is
detected by the current
sensor. (1) Inverter output related 9 [4]-6-(2) Inverter output related
troubles
Refer to [1] - [5].
IPM short/
grounding fault
(Detail code
104) When IPM short damage
or grounding on the load
side is detected just be-
fore starting the inverter. In the case of 4250
(1) Grounding fault of com-
pressor
(2) Inverter output related
Refer to 9 [4]-6-(2).
In the case of 4255
(1) Grounding fault of fan mo-
tor
(2) FAN INV board failure
Refer to 9 [4]-6-(2) [6].
Refer to 9 [4]-6-(2) [7].
Overcurrent
error due to
short-circuited
motor
(Detail
code105) When a short is detected
on the compressor or the
fan motor just before the
inverter operation. In the case of 4250
(1) Short-circuited compres-
sor
(2) Output wiring
(3) Power supply
Refer to 9 [4]-6-(2) [2].
In the case of 4255
(1) Short-circuited fan motor
(2) Output wiring
(3) Power supply Refer to [4]-6-(2) [6].
4260
4265 Cooling fan
abnormality In the case of 4260
When the heat sink
temperature
(THHS1) 95°C or
more is detected for
10 or more minutes
at inverter startup
In the case of 4265
When the heat sink
temperature
(THHS5) 85°C or
more is detected for
10 or more minutes
at inverter startup
Same as 4230 error Refer to Same as 4230 error.