SiBE12-908
Troubleshooting
Service Diagnosis
144
Troubleshooting
Check No.14
Refer to P.173
Check No.16
Refer to P.175
Check No.29
Refer to P.179
(R9445)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
Check No. 16
Discharge pressure check
Check the power supply
Judge
Replace stop valve.
Check No. 29
Short circuit check
NO
NO
NO
YES
Is it OK?
YES
YES
Check the voltage of electrolytic
capacitor
DC270±30V?
YES
Is the harness of
electric component or
compressor connected
properly?
Turn off the power supply, and
disconnect U, V, and W
harnesses
Check No.14
Check the inverter by the
inverter checker*
Is LED turned off?
NO
Replace
·Outdoor unit PCB
·Outdoor fan
·Humidification fan
·Four way valve coil
Replace the outdoor unit
PCB.
Connect properly.
*Inverter checker
Part No.: 1225477
Rectify the power supply or
replace the outdoor unit
PCB.
Replace the compressor.