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The pilot light is on but the heating will not heat

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Check the thermocouple

Posted on Oct 02, 2008

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Posted on Jan 02, 2017

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I have a VC Wonderfire model 2610. The pilot flame is perfect blue on both sides... however, when I hit the switch for the main burner to come on...the pilot goes out... any ideas ???


You may have moved the safety sensor or pilot flame tip. The pilot light heats a wire. The wire is the safety sensor. The wire has to be clean and in the pilot flame near the flame tip.

Jan 10, 2015 | Heating & Cooling

1 Answer

What is a thermocouple and what does it look like


A thermocouple is a bi-metallic junction that when heated gives an small electric output. The tip of it sits where the pilot light is ( and it is a copper tube going to the gas valve) and the pilot light heats it up. It creates electricity after it heats up (which is why you have to hold the pilot light knob down when lighting) and opens the gas valve to keep pilot light lit after you let the pilot knob go back up. When it stays lit without having to hold it down, (make sure the thermostat is set low so it doesn't light the burner while you have your hand down there) then you turn the pilot knob to on. It should stay on and you can set the furnace to heat and raise the temperature where you want.

Dec 09, 2013 | Heating & Cooling

1 Answer

The pilot light on the oven is on how ever the burner will not come on when the oven is turned up.


Hello,
Their is 2 possible things that are causing the oven to not heat.

1) the pilot burner is clogged with build up and not burning corretly...the standing pitol light is small and when the oven is turned on the pilot enlarges and heats a small bulb connected to a tube on a gas valve,if the pilot burner is clogged it will burn the small pilot but will not enlarge to heat that bulb so the gas will flow to the main burner.If that is whats happening the pilot burner needs to be replaced.

2) the pilot burner is properly heating the bulb connected to the above mentioned gas valve but that gas valve is bad and not opening once the pilot has heated the bulb..so in that case that gas valve would need to be replaced


GENE

Sep 17, 2011 | Premiere Ranges GCK100 Gas Kitchen Range

1 Answer

On my patio heater the pilot light will light but goes out as soon as I release it, even after holding it down a long time. I can't get it to stay on to light the heater.


Check that the pilot light is directed at the thermocouple, a copper 'tube' that heats up when the pilot light is lit. You should be able to see a copper coloured small tube that the pilot light is directed at - if the pilot flame is not heating that tube then the main burner will not light.

If the thermocouple is being heated correctly, then it could be a fault with the thermocouple itself (can be replaced) or the gas valve.

If the pilot flame is not heating the end of the thermocouple you should be able to adjust its position so that the pilot flame is directed at it more accurately

Jan 18, 2011 | Rta International Patio Heater

1 Answer

After heating pilot goes out . my igniter is bad so i light manually and after heating main burner shuts off and so does pilot


The thermocouple that controls the gas to the pilot light must be bad. The thermocouple, when it is heated by the pilot light keeps a valve open that keeps gas flowing to the the pilot light. This thermocouple closes the valve that supplies gas to the pilot light, this is to prevent gas from continuing to escape when the pilot light goes out. This is a safety issue, I recommend that you call a professional about this problem. You might be able to repair it your self by replacing the thermocouple but I still recommend that you have it checked by a professional.

Dec 02, 2009 | Whirlpool Water Heaters

1 Answer

Oven Not Heating Up


if the pilot light is working it must be the thermal bulb is not sensing the heat, you can try and use a long nosed lighter and try to heat the bulb up and turn the gas on and the added heat might help it kick on. Give it a try.

Nov 26, 2009 | Washing Machines

1 Answer

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

2 Answers

My pilot light will light, but will not stay lit? I have a gas whirpool water heater aprox 1 1/2 years old.Thisis the first time we have encountered any problems with our appliance.


Once the flame has struck it heats up a thermocouple that in turn holds the gas valve open

It is a safety measure in case the flame blows out and the gas keeps on coming.

Sometimes the end of the thermocouple gets dirty and a scrub with a fine emery board does the trick

If not it is a new part (They are not that expensive)

Jul 07, 2009 | Whirlpool Water Heaters

1 Answer

Pilot light goes out when i turn on heat. pilot light is blue flame lights good but when try to turn on heat it clicks and goes out therefor heat doesnt come on


How long do you leave the pilot on before you turn on heat. The thermal pile will take 3-5 minutes to heat up before it will send a signal to gas valve. If thermal pile doesn't send signal then gas valve closes. You might need a new thermal pile.

Jan 18, 2009 | Rinnai Toyostove Direct Vent Heater:...

1 Answer

The heater in my central heating is not getting turn on but the fresh air and cooling is getting turn on


Check the pilot light.Older standing pilot systems use thermocouples to verify the pilot is burning before the gas valve opens.If the pilot wont stay lit replace the thermocouple.
Newer systems light the pilot.On a call for heat the igniter lights the pilot. When the heat is verified the gas valve opens . Some systems use an circuit board with flashing led lights to help troubleshooting.

Jan 11, 2009 | Heating & Cooling

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