Discharge Temperature Too High Protection; Dc Fan Motor Fault - GE ASH220NCDWA Service Manual

[8] Discharge temperature too high protection

Compressor discharge temperature over 115°C. Error
clears within 3 minutes if temperature lowers below
115°C. Error status lock if it occurs 3 times in 1 hour.
Possible causes:
• The sensor is bad or fixed bad
• The system is clogged
• The system lack of refrigerant
• The valve opening is wrong

[9] DC fan motor fault

DC fan motor damaged, not connected, or related
circuit broken. Error status confirms and locks if occurs
3 times within 30 minutes.
Possible causes:
• Loose motor wiring
• The motor is bad
• The PCB is bad
I-22
Flow Charts
Topic Title
Is sensor wiring firmly in place?
Is sensor resistance
Is the system is clogged?
ASH324NCDWA
Is the system low on
Is stop valve is open?
Is the PMV coil wiring ok?
Is the ambient temperature too
Are the fan motor wires
conductive?
Is the motor running?
Power off and rotate the
fan motor by hand. Does
it turn freely?
Is the terminial voltage
Replace fan motor
TROUBLESHOOTING & REFERENCES
No
Yes
No
within range?
Yes
Yes
No
Yes
refrigerant?
No
No
Yes
No
Yes
No
high?
No
Yes
No
Yes
No
Yes
No
correct?
Yes
Reconnect
Replace pressure
switch
Check the piping system
Charge refrigerant
Check the piping system
Reconnect
Replace connecting
board
Replace wire and test again
Replace
PCB
Replace fan
motor
Replace
PCB