[Festus2]

On our wall-mounted HW switch, there is a small red light which will come on for a short period of time when you press the switch to ON. (Operating on propane). After the HW tank goes through a short ignition cycle, the red light will go out indicating that the furnace is now lit and is being heated with gas.

If the HW firing cycle is functioning properly, the red light should eventually go out after a very short period - a few seconds.

If the switch is left ON - in the propane mode - the red light will remain off. If the switch is pressed to the OFF position, the next time you want to use propane to heat the HW tank, press it to the ON position and the red light will again come on for a short time.