Maytag Amana SXV9 Series Service And Troubleshooting page 88

Troubleshooting
Error Code:
23 - DISCH temperature fail
25 - Air sensor fault
27 - Coil temperature fail 1
28 - Coil temperature fail 2
29 - Liquid temperatre fail
Applicable Models:
Outdoor AC
Outdoor HP
Method of Error Detection:
23 - Detected by discharge
temperature sensor
25 - Detected by air temperature
sensor
27 - Detected by defrost sensor
28 - Detected by outdoor coil
temperature sensor
29 - Detected by liquid
temperature sensor
Error Decision Conditions:
23 - Discharge temperature
sensor is out of range
25 - Outdoor air temperature
sensor is open or shorted
27 - Outdoor defrost sensor is out
of range
28 - Outdoor coil temperature is
out of range
29 - Liquid temperature sensor is
out of range
88
Board Flashes
23, 25, 27, 28, 29
Test termistors,
Yes
is the thermistor
out of range?
No
Are
thermistors
Yes
placed
properly?
No
Error Code 23, 25, 27, 28, 29
Replace the thermistor
Replace PCB
Place thermistors correctly