Compressor Sensor System Abnormality - Daikin 2MXS-W Series Service Manual

Troubleshooting for Outdoor Unit

7.15 Compressor Sensor System Abnormality

H0
Error Code
Outdoor Unit LED
A j 1 i 2 i 3 h 4 h 5 h
Display
Method of Error
 The system checks the power supply voltage and the DC voltage before the compressor starts.
Detection  The system checks the DC current of the compressor right after the compressor starts.
Error Decision
 The power supply voltage and the DC voltage is obviously low or high.
 The DC current of the compressor does not flow when the compressor starts.
Conditions
Supposed
 Disconnection of reactor
 Disconnection of compressor harness
Causes
 Defective outdoor unit PCB
 Defective compressor
212
+
Power
DC voltage
Module
–
DC current
Compressor
SiUS122226EA
PCB
(R22001)
Part 6 Service Diagnosis