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The heater is lit up like it’s on. The thermostat is lighting but the heater is not coming on.

The heater is lit up like it’s on. The thermostat is lighting but the heater is not coming on

1 Answer

Paul Carew

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Heating & Co... Master
3,534 Answers

Clean flame sensor check pressure switch

Posted on Jan 21, 2021

2 Related Answers

rolando ingking

832 Answers

SOURCE: my heater on light comes on, but the thermostat is

Based from your comment, please check the thermostat. It this is already busted, Have it replaced.
Hope this help.

Posted on Jan 06, 2010

rudyjoe

18 Answers

SOURCE: heater goes out after 10 to 30 seconds.

that sounds about right!

Posted on Nov 08, 2011

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1 Answer

Pilot stays lit but burner won't come on. Replaced thermocouple today.

Sounds like the gas control valve thermostat is bad.
Following link has manuals and troubleshoot for each type of gas control.
http://waterheatertimer.org/troubleshoot-gas-water-heater-thermostat.html#thermostat troubleshoot gas water heater thermostat

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

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2 year old BW Hot water heater with honeywell LED Thermostat- main burner lights but won't stay lit- Why?

Check for error codes and service manual on following link:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Replace gas control valve
http://waterheatertimer.org/How-to-replace-Honeywell-gas-control-valve.html

Gene:

Water Heater Timers Save Money

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lightly tap on the area where the wires are connected. the valve will stick at times. try that.

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Model MH25NG Radiant Garage heater won't turn off. As soon as I light the pilot light, the main burner comes on. Thought maybe the thermostat was bad, but it stays lit even with the thermostat wires...

Your problem lies in the gas valve, it looks as if the solenoid is stuck in the open position.

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Service HEater light is lit

check your thermostat sensor or the sensor that is on the back

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My heater on light comes on, but the thermostat is not lit up and it will not start

Based from your comment, please check the thermostat. It this is already busted, Have it replaced.
Hope this help.

Jan 06, 2010 | Heating & Cooling

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My honeywell gas suspended garage heater will not come on when the t'stat calls for heat. It is a heat only unit and neither the fan nor the blower motor will come on. The Heater is getting power to it...

The pilot light has to be lit before gas valve will operate. That's a safety feature so the valve won't open and fill the garage with gas and possibly cause an explosion or fire. If you have a standing pilot and can't get pilot to stay lit, it's usually the thermocouple and it will need to be replaced. Once the pilot is lit, the gas valve comes on and heats the combustion chamber up to approx. 100° to 125° a thermostat controlled fan switch will close and bring the blower on.

Sep 08, 2009 | Mr. Heater Suspended Garage Heater

1 Answer

Pilot light is lit, burner will not come on

The thermocouple must be in the flame of the pilot and producing a signal to the gas valve. Also check thermostat

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

Jul 18, 2009 | Jandy Lite2 LJ125 Ceramic Gas Heater

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Have pilot light lit but unit willnot come on hayward h350 heater

check millivolt output,if it is in normal range(400-600)check for continuity on pressure switch,flame rollout and high limits.

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Pilot light wont lit up

Change The Thermostat Cause If Your Getting Gas But The Water Heater Doesn't Detect The Heat It Will Close The Valve. When Lighting You Hold The Button Down For About 30 seconds so the thermostat will detect flame and stay lit. Check To Make Sure The Thermostat Is Where It Should Be. Heres A Picture Of What It Will Look Like.

You Can Replace Them If Need Be Will Be Available At Sears Or Home Depot. Also They May Sell Them At other Local Hard Ware Stores.

Happy Fixing And Thanks For Using Fixya.com
Sincerely,
Michael Scott

Jan 19, 2009 | Vanguard International Vanguard BY Rheem...

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The heater is lit up like it’s on. The thermostat is lighting but the heater is not coming on.

1 Answer

Paul Carew

2 Related Answers

rolando ingking

rudyjoe

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The heater is lit up like it’s on. The thermostat is lighting but the heater is not coming on.

1 Answer

Paul Carew

2 Related Answers

rolando ingking

rudyjoe

Add Your Answer

Attachments: Added items

Related Questions:

Pilot stays lit but burner won't come on. Replaced thermocouple today.

2 year old BW Hot water heater with honeywell LED Thermostat- main burner lights but won't stay lit- Why?

My dv35 wall furnace pilot light on main burner will not light

Model MH25NG Radiant Garage heater won't turn off. As soon as I light the pilot light, the main burner comes on. Thought maybe the thermostat was bad, but it stays lit even with the thermostat wires...

Service HEater light is lit

My heater on light comes on, but the thermostat is not lit up and it will not start

My honeywell gas suspended garage heater will not come on when the t'stat calls for heat. It is a heat only unit and neither the fan nor the blower motor will come on. The Heater is getting power to it...

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Have pilot light lit but unit willnot come on hayward h350 heater

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Pilot stays lit but burner won't come on. Replaced thermocouple today.

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