75
6.3.2 Class 50/60
Turn power off and then
on again.
Disconnect four way valve coil
from connector and check the
continuity.
Start heating operation.
Replace four way valve.
S80 voltage at
220-240VAC with
compressor on?
Four way
valve coil resistance at
Yes
Yes
Replace outdoor PCB.
Replace four way valve coil.
No
*Refer Figure 1 below.
No
(Fig. 1)
Voltage at S80
220-240 VAC
Compressor
ON
Time
*Four way valve coil
Not Energized
Heating: Energized
6.4 Inverter unit refrigerant check procedures
Check for refrigerant leakage.
See troubleshooting for U0
error.
Refrigerant system check.
Is the
discharge pipe
thermistor
disconnected from
the holder?
No
Reconnect the thermistor.
Replace the refrigerant.
Yes
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