ESIE15-13B Troubleshooting by Remote Controller
Service Diagnosis 155
4.23 Outdoor Unit PCB Abnormality
Remote
Controller
Display
L1
Applicable
Models
RZQG
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 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
In case of faulty in E
2
PROM
Supposed
Causes
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
· Defective inverter E
2
PROM
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