Si20-701_B Troubleshooting by Remote Controller
290
3.65
L5
Output Overcurrent
Detection
Remote Controller Display
L5
Applicable Models
RZQ-K/H, RZQ(S)-B/C, RZR-KU/HU
Method of Error Detection
The error is detected by converting the current flowing to
power transistor into voltage with CT1 (DC current
sensor).
Error Decision Conditions
When overcurrent has run to power transistor
(Actuated even by instantaneous overcurrent)
Supposed Causes
Defective compressor coil (disconnection, poor
insulation)
Compressor startup error (mechanical lock)
Defective inverter PCB
Instantaneous fluctuation of power supply voltage
Defective compressor (if bearing is scratched)
The stop valve is not opened
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