Mitsubishi Electric PU(H)Y-P250YGM-A, Руководство по обслуживанию

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[
IX
Troubleshooting ]
Error Code
Error definition and error
detection method
Cause Check method and remedy
4220
4225 Logic error
(Detail code
No.111) If only the H/W error logic
circuit operates, and no
identifiable error is de-
tected. In the case of 4220
(1) External noise
(2) Compressor INV board
failure
(3) G/A board failure
(4) IPM failure
(5) DCCT failure
Refer to 9 [4]-6-(2) [1] and replace
the G/A board.
Refer to 9 [4]-6-(2) [5] and replace
DCCT.
In the case of 4225
(1) External noise
(2) FAN INV board failure Refer to 9 [4]-6-(2) [7].
4230
4235 Heatsink over-
heat protection In the case of 4230
When the heat
sink temperature
(THHS1) 95°C or
higher is detect-
ed.
In the case of 4235
When the heat
sink temperature
(THHS5) 85°C or
higher is detect-
ed.
(1) Power supply environment Measure the power supply voltage.
Ensure that the power supply volt-
age is 342V or more between each
phase.
(2) Air passage blockage Check that the heat sink cooling air
passage is not blocked.
(3) Faulty wiring Check for cooling fan wiring.
(4) THHS failure Check for THHS sensor resistor.
(5) Compressor INV board
failure and cooling fan fail-
ure
Check that a voltage of 220~240V is
applied to the compressor INV board
connector CNFAN while the inverter
is in operation.
(6) Cooling failure Check the cooling fan operation un-
der the above operating conditions.
(7) IPM failure Refer to 9 [4]-6-(2) [2]
"Check for compressor ground fault
or coil error".
Refer to 9 [4]-6-(2) [5]
"Check the inverter circuit trouble".