Daikin RZQ Series FCQ20EVA Service Manual page 138

Troubleshooting by Remote Controller
Continuity check in the
power transistor (IGBT). Is
voltage generated
approximately at the same
increasing speed for each phase
after turning ON again?
Check the power supply voltage.
voltage drop generated?
Note:
1. Approximate value
Model
RZQ20/24LVA
RZQ36/45LVA
RZQ45/48MYL
CHECK 4 Refer to P.156.
129
A
CHECK 4
NO
the continuity
normal?
YES
Is the
inverter output
NO
(∗1) (U-V, V-W,
W-U)
YES
Is instantaneous
YES
NO
Instantaneous overcurrent detection value
∗ When operating compressor with
compressor output line
disconnected, the compressor stops
due to error after elapsed time of 5
seconds. Therefore, check the
voltage increase for 5 seconds.
37.0A
51.6A
32.3A
SiME281501E
Replace the outdoor unit PCB.
Replace the outdoor unit PCB.
Correct the power supply.
Compressor inspection.
Inspect according to the
diagnosis procedure for
abnormal noise, vibration,
operating status, etc. of the
compressor.
Service Diagnosis