Daikin RXYQ-TA Series, Руководство по обслуживанию, Страница: 260 / 337

Troubleshooting by Error Code SiUS341615E
247 Service Diagnosis
3.47 Inverter Compressor Overcurrent
Error Code
L8
Applicable
Models
All outdoor unit models
Method of Error
Detection
Detect current flowing through the power transistor.
Error Decision
Conditions
When the secondary-side inverter current exceeds:
∗
1
Supposed
Causes
„
Compressor overloaded
„
Wiring disconnection in compressor coil
„
Disconnection of compressor wiring
„
Defective inverter PCB
Troubleshooting
Power OFF
Open the stop valve.
YES
NO
Is the stop valve open?
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
12/14 ton classes are
equipped with 2 compressors.
Check for the compressor 1 or
2 applicable to the error code
L8 while in monitor mode of
the outdoor unit PCB.
Check in Monitor Mode
Check for the leads of the
compressor.
For Compressor 1
Leads on the M1C side
For Compressor 2
Leads on the M2C side
Are the
leads of the relevant
compressor
normal?
Replace the leads of the
relevant compressor.
NO
A