Outdoor Unit Pcb Abnormality - Daikin ZQG71~140L7V1B Service Manual

ESIE12-06

4.21 Outdoor Unit PCB Abnormality

L1
Remote
Controller
Display
Applicable
RZQG
Models
Method of Error
 Detect error by current value during waveform output before compressor startup.
Detection  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  When over-current is detected at the time of waveform output during operating the
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
Supposed
 External factor (Noise, etc.)
Causes  Defective outdoor unit fan motor
 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
163