Originally Posted by cchesley
Okay, I've got a bit tougher challenge. My heater (Hurricane by ITR) runs great for 2-3 hours when cold. Once up to temp it starts to cut out (Flame out indicator) every 10-20 minutes. Usually restarts within one or two tries or after reset.
Flame Out is usually an indicator of air in the line. However, Why no flame out for first 3 hours????
Once again knowledge I have is not of your make, I'm assuming generically most functions are the same.
Could be a lot of things. Most of which I don't have the answer to.
One: Do you hear the clicking of the fuel pump
, or has the pump stopped? On my friends boat with a 20 year old heater we had two things go wrong related to the pump turning off. One was the relay that supplied power to the pump needed to be replaced, every once in awhile it would stop supplying power to the pump.
The other problem with a stopped pump we had was the overtemp switch. There is a switch screwed to the outside of the heater. It is in the power line to the pump. If the heater gets too hot the switch breaks power to the pump leaving the logic circuits to do a controlled shutdown. In our case the switch had corrosion
in it and needed to be replaced. If your heater is actually getting too hot, then could be a lot of things, guesses could be obstructed inlet/outlets, fan running too slow, improper fuel rate....
Two: If the fuel pump is running, is the vent clogged on the fuel tank
? Maybe it takes awhile to put enough vacuum on the tank to shut it down. Try opening the fill when the heater stops.