Troubleshooting by Remote Controller Si20-701_B
265
3.58
L1
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
IGBT error
Defective E
2
PROM
Supposed Causes
External factor (Noise, etc.)
Defective outdoor unit fan motor
Broken fuse
Disconnection of compressor
Defective outdoor unit PCB
• Defective IPM
• Defective Current sensor
•Defective MP-PAM
• Defective IGBT or drive circuit
• Defective inverter E
2
PROM
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