Si20-701_B Troubleshooting by Remote Controller
176
3.32
E5
Compressor Motor Lock
Remote Controller Display
E5
Applicable Models
RZQ-K/H, RZQ(S)-B/C, RZR-KU/HU
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
îš„ Compressor lock
îš„ Incorrect UVWN wiring
îš„ Defective inverter PCB
îš„ Stop valve is not opened
îš„ High discharge pressure starting (For RZQ-K, RZQG,
RZR-KU/HU)
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