What it Means: Flame failure: The heater can’t maintain a flame.
How to Fix: Check for proper grounding and that the device is receiving gas of the right type and pressure.Examine the flame rod to ensure it’s connected and has no carbon buildup. Disconnect the remote control, PC board, and all wiring harnesses, then reconnect.
Ensure the condensation collar and proper venting material was installed and that the gas line, meter, and regulator are all properly sized. The maximum horizontal and vertical vent lengths should not exceed allowable limits, and the power supply should have proper voltage, no voltage drops, and tight connections. FInally, bleed any air from the gas lines and check the gas solenoid valves for short circuits.
