Troubleshooting for Outdoor Unit SiUS121827E
218 Part 6 Service Diagnosis
Troubleshooting
Check No.01 Refer to P.232
Check No.12 Refer to P.236
Check No.17 Refer to P.240
Check No.18 Refer to P.241
Check No.19 Refer to P.241
(R20418)
Caution
Replace the outdoor fan
motor.
Reconnect the connector or
fan motor lead wires.
Replace the stop valve.
Replace the outdoor heat
exchanger thermistor.
Replace the outdoor unit
PCB (main PCB).
Replace the electronic
expansion valve or the coil.
Replace the outdoor unit
PCB (main PCB).
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Check the installation space.
NG
OK
OK
NG
NG
OK
OK
OK
NG
NG
Check No. 19
Check the outdoor fan.
Check No. 18
Check the discharge
pressure.
Check No. 12
Check the electronic
expansion valve.
Check No. 01
Check the outdoor heat
exchanger thermistor.
Check No. 17
Check the installation
condition.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.