Outdoor Unit Pcb Abnormality - Daikin RZQG71L9V1 Service Manual

ESIE15-13C

4.23 Outdoor Unit PCB Abnormality

L1
Remote
Controller
Display
RZQG
Applicable
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 MP-PAM series capacitor overvoltage sensor.
 When over-current is detected at the time of waveform output during operating the
Error Decision
Conditions
 When the current sensor error during synchronized operation
 When overvoltage occurs in MP-PAM
 In case of IGBT error
 In case of faulty in E
 External factor (Noise, etc.)
Supposed
 Defective outdoor unit fan motor
Causes
 Broken fuse
 Disconnection of compressor
 Defective outdoor unit PCB (A1P)
Service Diagnosis
compressor
2
PROM
· IPM failure
· Current sensor failure
· MP-PAM failure
· Defective IGBT or drive circuit
2
· Defective inverter E PROM
Troubleshooting by Remote Controller
155