Pcb (For Inverter Compressor) Abnormality - Daikin SkyAir RZR-TA Series Service Manual

SiUS281811EA

4.39 PCB (for Inverter Compressor) Abnormality

L1
Error Code
Applicable All outdoor units
Models
Method of Error  Error is detected based on the current value during waveform output before starting
Detection
 Error is detected based on the value from current sensor during synchronous operation when
Error Decision  Overcurrent (OCP) flows during waveform output.
Conditions  Error of current sensor during synchronous operation.
 IPM failure.
Supposed
 IPM failure
Causes  Current sensor failure
 Drive circuit failure
Troubleshooting
Part 6 Service Diagnosis
compressor.
starting the unit.
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Turn off the power. Then,
turn on the power again.
Does the power
supply normally come
back on?
NO
YES
Troubleshooting by Error Codes
It is supposed that the error results
from external causes other than
failures (e.g. exogenous noises or
thunder).
Replace the outdoor main PCB
(A1P).
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