Output Overcurrent Detection - Daikin 4MXS-R Series Service Manual

Troubleshooting for Outdoor Unit

7.20 Output Overcurrent Detection

L5
Error Code
j
Outdoor Unit LED
A
Display
Method of Error An output overcurrent is detected by checking the current that flows in the inverter DC section.
Detection
Error Decision
Conditions
Supposed
Causes
207
h h i h
1 2 3 4
A position signal error occurs while the compressor is running.
A rotation speed error occurs while the compressor is running.
An output overcurrent signal is fed from the output overcurrent detection circuit to the
microcomputer.
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
Poor installation condition
Closed stop valve
Defective power module
Wrong internal wiring
Abnormal power supply voltage
Defective outdoor unit PCB
Supply voltage out of specification
Defective compressor
h
5
SiUS121736EA
Service Diagnosis