
12
38GXM030 Diagnostic Codes
Equipment Fault
Number of Flashes On Outdoor Unit Board LED’s
LED--
D101
(Red)
LED--
D102
(Yellow)
LED--
D103
(Green)
LED--
D104
(Red)
LED--
D105
(Yellow)
LED--
D106
(Green)
LED--
D107
(Red)
LED--
D108
(Yellow)
LED--
D109
(Green)
LED1
(Red)
LED2
(Green)
Compressor Operating Normally 1
High Compressor Discharge Pressure
Protection
2
High leaving Outdoor Coil Air T emperature
Protection
3
Communication Error 4
IPM Module Protection 5
Compressor Overcurrent Protection 6
High Outdoor Coil Temperature Protection 7
Indoor Coil High Temperature Protection 8
Indoor Coil Freeze Protection 9
Failed Sensor 10
Compressor Overload Protection 11
Low Compressor Discharge Pressure
Protection
12
Compressor Motor Phase Imbalance
Protection (Compressor Stops)
13
EEProm Error 14
Power Factor Correction Board Capacitor
Charge Failure
15
Compressor Ramping Down Due to High
Leaving Outdoor Coil Air T emperature
1
Compressor Ramping Down Due to High
Outdoor Coil Temperature
2
Compressor Ramping Down Due to High
Current
3
Compressor Ramping Down Due to
Compressor Motor Phase Imbalance
4
Compressor Ramping Down Due to Unit A
High ID Co il Temperature
5
Compressor Ramping Down Due to Unit B
High ID Co il Temperature
6
Compressor Ramping Down Due to Unit C
High ID Co il Temperature
7
Compressor Ramping Down Due to Unit D
High ID Co il Temperature
8
Defrost Mode 9
Max Comp. Speed Reached Du e to High
Leaving OD Coil Air Temperature
1
Max Comp. Speed Reached Du e to High
OD Coil Temperature
2
Max Comp. Speed Reached Du e to High
Current
3
Max Comp. Speed Reached Du e to
Compressor Motor Phase Imbalance
4
Max Comp. Speed Reached Du e To Unit A
High Indoor Coil Temperature
5
Max Comp. Speed Reached Du e To Unit B
High Indoor Coil Temperature
6
Max Comp. Speed Reached Du e To Unit C
High Indoor Coil Temperature
7
Max Comp. Speed Reached Du e To Unit D
High Indoor Coil Temperature
8
Oil Return Mode 9
Outdoor Air Temperature Thermistor 1
Outdoor Coil Temperature Thermistor 2
Leaving Outdoor Coil Air temperature
Thermistor
3
Driver Board Communications Error 4
Communication Error With Unit A 1
Unit A Mid Indoor Coil Temperature
Thermistor
2
Unit A Leaving Indoor Coil T emperature
Thermistor
3
Unit A Entering Indoor Coil T emperature
Thermistor
4
Unit A Indoor Air Temperature Th ermistor 5
Unit A Heating/Cooling Mode Conflict With
Other Indoor Units
6
Unit A Indoor C o il Freeze Protection 7
Unit A Indoor Coil High Temperature
Protection
8
Communication Error With Unit B 1
Unit B Mid Indoor Coil Temperature
Thermistor
2
Unit B Leaving Indoor Coil Temperature
Thermistor
3
Unit B Entering Indoor Coil Temperature
Thermistor
4
38/40GXM
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