Troubleshooting by Indication on the Remote Controller
107
3.26
E5
Inverter Compressor Motor
Lock
Remote Controller Display
E5
Applicable Models
VRVII and II-S Series
Method of Error Detection
Inverter PCB takes the position signal from UVWN line
connected between the inverter and compressor, and
detects the position signal pattern.
Error Decision Conditions
The position signal with 3 times cycle as imposed
frequency is detected when compressor motor operates
normally, but 2 times cycle when compressor motor
locks. When the position signal in 2 times cycle is
detected.
Supposed Causes
Compressor lock
High differential pressure
Incorrect UVWN wiring
Defective inverter PCB
Stop valve is not opened
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