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- Check the following at cooling mode
Check the voltage between “POWER ”
and
“RL1
”
of Main P.C.B
3
1
Check the compressor wiring
Check the Relay(RL1)
Check the wiring of outdoor unit
Check the compressor
(Check the winding resistance)
Check the compressor capacitor
Check the connecting
wire between Main
P.C.B and the
compressor
Change Relay(RL1)
Change the
compressor.
Check the Main P.C.B
the circuit for relay
driving.
Rating voltage
less than 90%
NG
Open or Short
Rating voltage
less than 90%
Rating voltage more than 90%
Rating voltage more than 90%
OK
Only Compressor Do not Run