Williams gas wall heater - only fires when screws on valve jumped

Old 01-19-24, 08:51 AM
Thread Starter
Join Date: Feb 2014
Posts: 35
Upvotes: 0
Received 0 Upvotes on 0 Posts
Williams gas wall heater - only fires when screws on valve jumped

The burner on my gas wall heater will only fire if I cross two screwdrivers between screws 1 and 3 on the valve. If I touch a wire to jump between the screws, the burner won't start. It only seems to work when I push the screw drivers in against the screws and cross them. I'm thinking I need to replace the valve because there is a loose connection at the terminals inside the valve? I have tested and it is not other components.
Old 01-19-24, 09:17 AM
Join Date: Oct 2015
Location: Ct.,USA
Posts: 3,375
Received 320 Upvotes on 282 Posts
Do you have an electrical diagram of the wall heater? Screw 1 or 3 must be valve power input. Do both screws have a wire attached?
Old 01-19-24, 09:35 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 28,312
Received 2,309 Upvotes on 2,054 Posts
Can you provide the model number of your stove?

It also wouldn't hurt to tell us what type system it is. Does it have a standing pilot light? Is there a spark ignitor? Do you have a external thermostat?

I don't think you have a bad gas valve. When you jumper it and it starts you are showing that the gas valve works. You are bypassing the controls forcing it to turn on so I think the problem is something else, possible a poor connection especially if it's a millivolt system. Or it could a connection going to a thermostat or on/off switch or the switch is bad.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: