Bryant RV Furnace
7 fault codes documented
1 flash — Low Input Voltage
The diagnostic LED flashes once to indicate that the furnace is receiving insufficient voltage to operate correctly. This can affect the performance of the control module and other components.
2 flashes — Ignition Failure
The diagnostic LED flashes twice, indicating that the furnace failed to ignite the gas after multiple attempts. The system will attempt to restart after a delay.
3 flashes — Open High Limit
The diagnostic LED flashes three times, meaning the high limit switch has opened. This safety device trips to prevent the furnace from overheating.
4 flashes — Stuck Sail Switch
The diagnostic LED flashes four times, indicating that the sail switch is stuck in the closed position. This switch ensures proper airflow before ignition.
5 flashes — Module Fault
The diagnostic LED flashes five times, signaling an internal fault within the control module itself. This requires professional diagnosis.
Hard lockout — Requires manual reset
A hard lockout indicates a more serious issue, such as a module fault or open high limit, that prevents the furnace from restarting automatically. The system must be manually reset.
Soft lockout — System timed out, will retry
A soft lockout means the furnace experienced a temporary fault, such as an ignition failure, but is programmed to try restarting after a specific delay. The diagnostic LED will flash a code associated with the specific soft lockout reason.