Midea M2OE-14HFN1-Q, Service Manual

Page: 50 / 57

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