Troubleshooting by Indication on the Remote Controller
69
Troubleshooting
NO
Electronic
expansion valve is
connected to indoor
unit PCB.
NO
NO
YES
YES
Relay
cables short
circuit or
disconnected.
Shut the power
supply OFF after
connection and
then restart.
Replace the
electronic
expansion valve
coil.
Replace the
relay cables.
When restarting
the operation
after shutting the
power supply
OFF does not
work, replace the
indoor unit PCB.
NO
Replace the
electronic
expansion valve
main body.
YES
YES
Check (
∗
1) of
electronic expansion
valve coil indicates
normal.
When power
is supplied.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
