Outdoor Unit Pcb Abnormality - Daikin SkyAir GQI-Eco Series Service Manual

SiBE281013

4.21 Outdoor Unit PCB Abnormality

L1
Remote
Controller
Display
Applicable RZQG
Models
Method of Error
Detection
Error Decision
Conditions
Supposed
Causes
Service Diagnosis
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.
When over-current is detected at the time of waveform output during operating the
compressor
When the current sensor error during synchronized operation
When overvoltage occurs in MP-PAM
In case of IGBT error
2
In case of faulty in E PROM
External factor (Noise, etc.)
Defective outdoor unit fan motor
Broken fuse
Disconnection of compressor
Defective outdoor unit PCB (A1P)
•
IPM failure
•
Current sensor failure
•
MP-PAM failure
•
Defective IGBT or drive circuit
2
•
Defective inverter E PROM
Troubleshooting by Remote Controller
135