Troubleshooting by Remote Controller Si20-701_B
287
3.64
L5
Inverter Compressor
Abnormality
Remote Controller Display
L5
Applicable Models
CMSQ
Method of Error Detection
The error is detected from current flowing in the power
transistor.
Error Decision Conditions
When an excessive current flows in the power transistor.
(Instantaneous overcurrent also causes activation.)
Supposed Causes
îš„ Defective compressor coil (disconnected, defective
insulation)
îš„ Compressor startup error (mechanical lock)
îš„ Defective inverter PCB
Troubleshooting
Compressor inspection
A
Check the compressor
cable for disconnection
and flaws.
Is the stop
valve open?
NO
The
compressor cable
has a defect.
Onsite causes.
Open the stop
valve.
Replace the
cable, and then
securely
connect the
connectors.
YES
NO
YES
Power
OFF
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
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