Thermal Switch

Over 698,000 strictly plumbing related posts

Plumbing education, information, advice, help and suggestions are provided by some of the most experienced plumbers who wish to "give back" to society. Since 1996 we have been the best online (strictly) PLUMBING advice site. If you have questions about plumbing, toilets, sinks, faucets, drains, sewers, water filters, venting, water heating, showers, pumps, and other strictly PLUMBING related issues then you've come to the right place. Please refrain from asking or discussing legal questions, or pricing, or where to purchase products, or any business issues, or for contractor referrals, or any other questions or issues not specifically related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups and we don't tract you. We absolutely do not sell your personal information. We are made possible by:

Post New

How to Show Images

Newest Subjects

Thermal Switch

Author: Russell Cook (TX)

I have a Older Model Flame Guard,US Craft master 30 gal Gas Water Heater.The Pilot Lite will stay on But as soon as I begin to rise the Temperature Contour to Warm the Pilot will extinguish and The I have to start the Process over again. NOTE: I just replaced the Thermocouple today for the Piolt,clened FIVR With Toothbrush & Vacume as Suggested( Not too dirty)also Checked Chimney tube for Obstruction, None found. Thinking it may be the Thermal Switch that needs replaced. Any Advice or insight would be Appreciated..... thank you..

Post Reply

Re: Thermal Switch
Author: hj (AZ) The thermal switch would not let the pilot stay on if it were bad.
Post Reply

Re: Thermal Switch
Author: Russell Cook (TX) Thank you... do you know what could be Tripping The Thermal Switch every time I Turn the Thermostat up to Normal heating Range? Maybe it's the Thermostat itself..maybe a Short in the wiring on the Thermal Switch... I'm at a Loss on this myself...
Post Reply

Re: Thermal Switch
Author: srloren (CA) How old is the water heater? I would be tempted tp replace it with a new efficient water heater if it is over 5 years old.
Post Reply

Please note:

Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.

Search for plumbing parts on our sponsor's site:

Plbg Advisor List Common Plumbing Terms Find A Plumber Plumbing Manufacturers Directory theplumber.com

Special thanks to our sponsor:

to FAQ's - to popular subjects - to plumbing books - to Tankless 101 - to plumbing history - to helping charities - to contact us