SiBE041102_A
Troubleshooting
Service Diagnosis
73
Troubleshooting
Check No.15
Refer to P.91
Check No.18
Refer to P.93
Check No.20
Refer to P.94
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Electrical
components or
compressor harnesses
connected as
specified?
NO
YES
Correct the power supply.
(R14670)
NO
NO
NO
YES
YES
NO
YES
YES
Replace the outdoor unit
PCB.
Replace the compressor.
Correct the power supply
or replace the outdoor unit
PCB.
Reconnect them as
specified.
Replace the outdoor unit
PCB.
∗
Inverter checker
Part No.: 1225477
NO
YES
Replace the stop valve.
Turn off the power.
Check the power supply voltage.
Voltage as rated?
Check No. 18
Check the discharge pressure.
OK?
Check No. 20
Check the short circuit of the diode
bridge.
Normal?
Check the connection.
Turn on the power.
Check the electrolytic capacitor
voltage.
320 ± 50 VDC?
Turn off the power. Disconnect the
harnesses U, V, and W.
Check No.15
Check with the inverter checker (
∗
).
Any LED OFF?
