Inverter Compressor Instantaneous Overcurrent - Daikin Aurora Series Service Manual

Troubleshooting by Error Code

2.48 Inverter Compressor Instantaneous Overcurrent

L5
Error Code
Applicable
All outdoor unit models
Models
Method of Error
Detect current flowing through the power transistor.
Detection
Error Decision When instantaneously overcurrent flows through the power transistor.
Conditions
Supposed
Causes
Troubleshooting
Compressor inspection
239
Defective compressor coil (such as wiring disconnection or insulation failure)
Compressor startup failure (mechanical lock)
Defective inverter PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the stop valve open?
Check the compressor cable
for disconnection and flaws.
Are the
Power OFF leads of the relevant
compressor
normal?
Are
wiring and wire
connections to the relevant
compressor
normal?
The
insulation
resistance of the relevant
compressor is 100 kΩ
or less.
The coil
of the relevant
compressor has caused
wiring disconnection
in it.
A
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
Go to the next page.
SiUS341802E
Open the stop valve.
Replace the leads of the
relevant compressor.
Rectify the wiring and
wire connections.
Replace the
compressor.
Replace the
compressor.
Service Diagnosis