Daikin SkyAir RZR-P Series Service Manual page 165

SiUS281117
Troubleshooting
CHECK 4
158
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the installation
conditions.
Is the stop valve open?
YES
Is the
difference
between high and low
pressure before startup
not more than
0.2 MPa?
YES
Turn the main power supply
OFF, and then disconnect the
connection between the
compressor and inverter.
CHECK 4
Continuity check in
the power transistor (IGBT).
Is the continuity
normal?
YES
The
compressor is
grounded and short
circuited.
NO
Refer to P.176.
NO
NO
NO
YES
Troubleshooting by Remote Controller
Open the stop valve.
Insufficient pressure
equalization.
Check refrigerant system.
Replace the outdoor unit
PCB.
Replace the compressor.
Compressor inspection.
Inspect according to the
diagnosis procedure for
abnormal noises, vibration,
operating status, etc. of the
compressor.
Service Diagnosis