L5 Inverter Compressor Abnormality - Daikin R71FUV1 Service Manual

Troubleshooting by Remote Controller
L5
3.64
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
Defective compressor coil (disconnected, defective
insulation)
Compressor startup error (mechanical lock)
Defective inverter PCB
Troubleshooting
Compressor inspection
Caution
Check the compressor
cable for disconnection
Power
and flaws.
OFF
Inverter Compressor
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is the stop
valve open?
YES
The
compressor cable
has a defect.
NO
A
NO
Onsite causes.
Open the stop
valve.
YES
Replace the
cable, and then
securely
connect the
connectors.
Si20-701_B
287