Turn off the power. Disconnect the
harnesses U, V, and W.
(R21067)
Caution
NO
YES
YES
NO
NO
YES
NO
YES
Check No.15
Check with the inverter analyzer.
Turn off the power and reconnect
the harnesses. Turn on the power
again and restart the system.
(Precaution before turning on the power again)
Make sure the power has been off for at least 30 seconds.
Correct the power supply or
replace the outdoor unit
PCB (main PCB).
Open the stop valve.
∗ Inverter analyzer:
RSUK0917C
Replace the compressor.
Replace the compressor.
Check the electronic
expansion valve coil.
Go to Check No. 12.
Any LED off?
Stop valve
closed?
Emergency stop
without compressor running?
System shut
down after errors repeated
several times?
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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