Midea M2OF-18HFN1-Q - Page 50

Service manual DM16-01.01.11-01en
50 Multi DC inverter R410A. Outdoor unit
11.3.2.8 Temperature protection of compressor discharge (ODU P4)
Temperatureprotectionof
compressordischarge
Checkwhetherthe
compressordischargetemp.is
morethan115°C?
Check whether the
connection is right between
compressor discharge temp.
sensor and PCB according
to wiring diagrams?
Measure the resistance value
of compressor discharge
temp. sensor.
If the value is
not normal
isnormal referto
theAppendix 2?
No
Yes
Yes
No
Correct the wiring connection
Stopleakingandaddrefrigerant
Replace the compressor discharge temp. sensor
No
Yes
Replace high pressure valve assy
Yes
No
Replace outdoor main PCB
No
Checkwhetherthe
refrigerantisleak