Outdoor Unit Pcb Abnormality - Daikin RZQ Series FCQ20EVA Service Manual

SiME281501E

4.27 Outdoor Unit PCB Abnormality

L1
Error Code
Applicable RZQ
Models
 Detect error by current value during waveform output before compressor startup.
Method of Error
 Detect error by current sensor value during synchronized operation at the time of startup.
Detection
 Detect error using an SP-PAM series capacitor overvoltage sensor.
 When overcurrent is detected at the time of waveform output before operating the
Error Decision
Conditions
 When the current sensor error during synchronized operation
 When overvoltage occurs in SP-PAM
 In case of IGBT error
 Defective outdoor unit PCB (A1P)
Supposed
Causes
 Defective connection of compressor connector
 Defective outdoor unit fan motor
 Broken fuse
 External factor (Noise, etc.)
Service Diagnosis
compressor
 IPM failure
 Current sensor failure
 SP-PAM failure
 Defective of IGBT or drive circuit
Troubleshooting by Remote Controller
124