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Mitsubishi Electric PURY-RP200 Service Handbook page 261

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[ IX Troubleshooting ]
(2) Inverter output related troubles
Items to be checked
[1]
(1)
Check the
INV board er-
ror detection
circuit.
(2)
[2]
Disconnect the compressor
Check for
wiring, and check the com-
compressor
pressor Meg, and coil resis-
ground fault
tance.
or coil error.
HWE10020
Disconnect the invert-
1)
er output wire from
the terminals of the
INV board (SC-U,
SC-V, SC-W).
Put the outdoor unit
2)
into operation.
3)
4)
1)
2)
Phenomena
Overcurrent error
(4250 Detail code No. 101, 104,
105, 106, and 107)
Logic error
(4220 Detail code No. 111)
ACCT sensor circuit failure
(5301 Detail code No.117)
IPM open
(5301 Detail code No.119)
Compressor Meg failure
Error if less than 1 Mohm.
Compressor coil resistance failure
Coil resistance value of 1 ohm
(20°C [68°F]): RP200, RP250
models
Coil resistance value of 0.6 ohm
(20°C [68°F]): RP300 model
- 252 -
Remedy
Replace the INV board.
Replace the INV board.
Replace the INV board.
Normal
Check that there is no liquid re-
frigerant in the compressor.
If there is none, replace the com-
pressor.
Replace the compressor.
GB
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