L1 Outdoor Unit Pcb Abnormality - Daikin R71FUV1 Service Manual

Troubleshooting by Remote Controller
L1
3.56
Abnormality
Remote Controller Display
L1
Applicable Models
RZQ-K/H, RZQ(S)-C, RZR-KU/HU
Method of Error Detection
Detect error by current value during waveform output
before compressor startup.
Detect error by current sensor value during
synchronized operation at the time of startup.
Detect error using an MP-PAM series capacitor
overvoltage sensor.
Error Decision Conditions
When overcurrent is detected at the time of waveform
output before operating the compressor
When the current sensor error during synchronized
operation
When overvoltage occurs in MP-PAM
In case of IGBT error
In case of defective jumper setting
Supposed Causes
Defective outdoor unit PCB
• Defective IPM
• Defective Current sensor
• Defective MP-PAM
• Defective IGBT or drive circuit
Outdoor Unit PCB
Si20-701_B
261