CGM boiler will not light


Old 05-15-02, 08:22 AM
Visiting Guest
Posts: n/a
boiler will not light

I own a Weil-McLain hot water CGM boiler, model CGM-5-PI with an intermittent ignition device.

When I turn up the room thermostat, the solenoid on the boiler clicks and the electric water valve controlled by the room thermostat opens. No gas flows, so the boiler does not light up.

I know there is gas to the gas valve on the boiler because the residential water heater works and it is on the same gas line, 3 feet away.

The boiler thermostat has been set to 180 degrees for years. I jumped the thermostat's 2 yellow wire connectors and the boiler still didn't fire, making me believe the boiler thermostat works.

What could be preventing any gas from flowing into the boiler?

Last edited by gscottm; 05-16-02 at 11:57 AM.
Sponsored Links
Old 05-15-02, 06:16 PM
Visiting Guest
Posts: n/a
Could be the pilot valve. It plugs into the side of your gas valve. It is about inch and a half square box that has 3 or 4 prongs on it and has a sensor that runs down to your pilot assembly. It allows the pilot to light and after a delay, opens up the gas valve which brings on your burners.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

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