Filter
Top Products
[ IX Troubleshooting ]
- 254 -
HWE08040 GB
(2) Inverter output related troubles
Items to be checked Phenomena Remedy
[1]
Check the
INV board er-
ror detection
circuit.
(1) Disconnect the invert-
er output wire from
the terminals of the
INV board (SC-U,
SC-V, SC-W).
1) Overcurrent error
Error code: 4250
Detail code: No. 101, 104, 105,
106, and 107
Replace the INV board.
(2) Put the outdoor unit
into operation.
2) Logic error
Error code: 4220
Detail code: No. 111
Replace the INV board.
3) ACCT sensor circuit failure
Error code: 5301
Detail code: No.117
Replace the INV board.
4) IPM open
Error code: 5301
Detail code: No.119
Normal
[2]
Check for
compressor
ground fault
or coil error.
Disconnect the compressor
wiring, and check the com-
pressor Meg, and coil resis-
tance.
1) Compressor Meg failure
Error if less than 1 Mohm.
Check that there is no liquid re-
frigerant in the compressor.
If there is none, replace the com-
pressor.
2) Compressor coil resistance failure
Coil resistance value of 1 ohm
(20°C [68°F]): - P96models
Coil resistance value of 0.6 ohm
(20°C [68°F]): P120 model
Replace the compressor.
[YHMU-A]