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Water Heater Will Not Stay Lit
Posted 23 October 2012 - 07:30 PM
I have a 1997 Discovery with an Atwood water heater.
When I hit the light switch it fires up for five sec. and shuts off. The igniter keeps clicking when it fires up for those five sec. but then everything shuts down. Any Help.
Posted 23 October 2012 - 07:38 PM
If not, light the stove to verify good propane flow and try again.
If you did have a flame, your thermocouple may be mis-aligned or dirty, have mud dubbers nest on it, etc. Start by cleaning the burner tube and checking thermocouple alignment.
Dianne and Brett Wolfe
1997 Safari Sahara 3540
Moderator, FMCA.com Forums
Chairman, FMCA Technical Advisory Committee
Member, FMCA Long-Range and Development Committee 2007-2009
Moderator, http://www.dieselrvclub.org/(FMCA chapter)
Posted 23 October 2012 - 07:57 PM
I took it all apart and cleaned everything.
I also cleaned all the ground wires and still no luck.
We used it last week and all was well.
P.S. Yes I do have a flame.
Posted 23 October 2012 - 08:24 PM
Posted 23 October 2012 - 08:30 PM
Posted 23 October 2012 - 11:40 PM
The only ground return for that thermocouple is through the mounting brackets. If you haven't done it, remove all the brackets and give any piece that contacts another piece of metal to make sure there is SOLID contact. A star lockwasher on those bracket screws won't hurt either.
Any guesses how I know?
Wanna buy a new and unused control board?
Posted 24 October 2012 - 10:19 AM
They are often hidden behind the gas valve. grounded by a stud in the valve. It is close to the tank drain and if you have a Hotshot install, it can be difficult to see and hard to remove, the 11/32 in. nut holding the ground.
I have used a small wire brush to clean the stud and terminals to get a good ground. The heater will light then go out. Cycling to switch a number of times will get the burner to work, but it will not relight when the water heater calls for heat.
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