TROUBLE SHOOTING - GENERAL
Do NOT attempt to start Heater more than three (3) times.
If the Heater does not start, the Control Box Lamp is flashing, and/or a diagnostic fault code is noticed on the Diagnostic
Display, attempt two more starts prior to initiation of Heater maintenance.
If the Control Box Lamp begins to flash, the Heater is signaling that an abnormal condition is present
If a fault is encountered during Start Up and Ignition is not achieved in the allowable 3 1/2 minutes, the Heater will
automatically shut down, flash the Control Box Lamp, and display the component fault.
If black smoke is noticed during any mode of Heater Operation, shut down the
Heater, and check for airflow obstructions. It is possible that frost has built up in
the combustion air intake or that debris has entered into the combustion system.
Attached are a series of troubleshooting checklists to aid the user in resolving each specific fault code.
Note: attempt to start the Heater a total of three (3) times prior to the initiation of
Note: more than one action may be required to resolve a Heater Fault Code.
Note: If the Heater alternately displays a Fault Code with one of the current Run
settings (07 or 14), the Heater is attempting to compensate for an abnormal
operating condition. If the condition remains, the Heater will continue to operate
as long as possible. If safe Heater operation is no longer possible, the Heater will
shut down and display the appropriate Fault Code.