Daikin RZQ Series FCQ20EVA Service Manual page 122

Troubleshooting by Remote Controller
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.
Check the installation conditions.
Is the stop valve open?
Is the UVWN wiring
higher than 2.6 MPa at
see whether compressor
is short-circuited or
high pressure vary even
instantaneously when restarting
113
NO
YES
NO
normal?
YES
Is high pressure
YES
starting?
NO
Check and
YES
ground.
NO
Does low or
YES
compressor?
NO
SiME281501E
Open the stop valve.
Connect correctly.
Remedy the cause.
Replace the compressor.
Replace the outdoor unit PCB.
Replace the compressor.
Service Diagnosis