Trane Furnace Error Codes
Complete list of Trane furnace error codes with causes and how to fix them.
1
🟢
Trane Furnace error code 1: System lockout — pressure switch stuck closed.
✓ DIY Possible
10
🟡
Trane Furnace error code 10: Polarity reversed / neutral not connected.
Technician Required
11
🔴
Trane Furnace error code 11: Igniter circuit failure.
Technician Required
12
🔴
Trane Furnace error code 12: Flame sense not detected at ignition.
Technician Required
126
🔴
Trane Furnace error code 126: Low pressure fault.
Technician Required
127
🔴
Trane Furnace error code 127: High pressure fault.
Technician Required
128
🟡
Trane Furnace error code 128: Communication fault.
Technician Required
129
🟢
Trane Furnace error code 129: Outdoor temperature sensor fault.
✓ DIY Possible
130
🟢
Trane Furnace error code 130: Suction temperature sensor fault.
✓ DIY Possible
131
🟢
Trane Furnace error code 131: Discharge temperature sensor fault.
✓ DIY Possible
132
🟢
Trane Furnace error code 132: Liquid temperature sensor fault.
✓ DIY Possible
2
🔴
Trane Furnace error code 2: Low pressure switch lockout.
Technician Required
3
🟡
Trane Furnace error code 3: Draft pressure switch stuck open.
Technician Required
4
🟡
Trane Furnace error code 4: Open high limit device.
Technician Required
5
🔴
Trane Furnace error code 5: Flame sensed with no call for heat.
Technician Required
6
🔴
Trane Furnace error code 6: Open rollout switch.
Technician Required
7
🔴
Trane Furnace error code 7: Low flame sense current.
Technician Required
8
🔴
Trane Furnace error code 8: Ignition lockout after 3 tries.
Technician Required
9
🟡
Trane Furnace error code 9: Low inducer RPM.
Technician Required
EEE
🟡
Trane Furnace error code EEE: Communication loss between thermostat and …
Technician Required