Explore answers about Thermocouple

My home heater is a Weil-McLain 91-112006-1000. I am having

My home heater is a Weil-McLain 91-112006-1000. I am having a problem with my pilot light. It doesn't want to stay on when I release the red button. I have trying keeping the button down for one minute, and it wouldn't stay lite. I then kept the red button down for about two minutes, and the pilot still went out. So I replace the Thermocouple with a Honeywell Thermocouple, thinking that would solve the problem. But it didn't. I have been searching to see what else cold be wrong, and I came up with the gas regulator. Could that be the problem. If so, I will need to replace that with a new one. Where do I get that part?JA: I'll do all I can to help. How long have you been dealing with this?Customer: The furnace hasn't worked for about two weeks. So I have been heating the house using my gas fireplace in my dining room at the front of the house, and a space heater in my bedroom at the read of the house. And was able to keep a comfortable temperature. But only a couple of days ago I tried my hand at replacing the Thermocouple. But now I may have to replace the gas regulator. Do you agree with that could be the problemJA: Did you double-check the thermostat's settings? And what about the filters?Customer: ok on bothJA: Do you plan on doing the work yourself?Customer: yesJA: Anything else we should know to help you best?Customer: That's all I can think of for now

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Tim Ohms

HVAC Journeyman

54 satisfied customers
Xl225-3.replaced valve, thermocouple, new

Xl225-3.replaced valve, thermocouple, new regulator.established 1/2 pound pressure to heater.new eco switch.Heater lites ,nice blue flames, runs fine about 30-45sec.pilot&fire both go out.relite pilot turn on valve again works for 25 sec then goes out again.different run time each try.nevsr seen this in 31 years of servicing hvac/r equipment. Please help , thank you, Fred. ?

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Daniel Plourde

plumbing, hvac technichian

Vocational, Technical or Trade School

556 satisfied customers
I have a ventless gas space heater. the pilot light won't

Hi. I have a ventless gas space heater. the pilot light won't staylit. cCan you help me?JA: I'll do all I can to help. How long have you been dealing with this?Customer: About three days.JA: Do you plan on doing the work yourself?Customer: YesJA: Anything else we should know to help you best?Customer: Yes. of the five ceramic plates, one, on the extreme right, has a hole between it and the one platenext to it. The hole is enlarging.

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Rick

Supervisor

27,380 satisfied customers
I have an American Standard Freedom 80 single stage furnace.

I have an American Standard Freedom 80 single stage furnace. It is about 10 years old. Last week it started blowing cold air. After testing a few things I discovered the hot surface igniter was bad. I called around for a new igniter in the local area. I found a universal silicone nitride igniter. I installed the new igniter and the furnace worked great again. Yesterday (about a week later) it started blowing cold air again. I tested the igniter and again it was bad. I will note that this new igniter had a resistance of only 7 ohms. From what I read, this reading seemed a little low. So yesterday I found a shop that stocks the original OEM igniter. I've tested this new igniter and it reads 15 ohms. I installed the second new igniter and the system seems to be with working fine again. However, I am worried that something else may be causing the igniter to go out. Therefore I fired up the furnace and back probed the 2 wires going to the igniter. I tested it for about 15 seconds and I'm getting 105-110 VAC. However from my understanding I should only be getting 80 VAC going to the igniter. So does that mean the circuit board is faulty for supplying the wrong voltage? Or did my 10 year old igniter just finally go bad? And maybe the Silicon nitride igniter that I installed just not the right one? Is it OK to operate the furnace the way it is? I know that I don't want to keep replacing igniters. Also I did clean up the heat sensor thermocouple as well as replace the filter. Thank you for any help.

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gotoman for ac

HVAC Service manager and owner

Associate Degree

5,516 satisfied customers
Thermostat-couple won't stay lit on gas boiler. Is there

Thermostat-couple won't stay lit on gas boiler. Is there something I can do before I have to call someone?

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Rick

Supervisor

27,380 satisfied customers
My furnace burners won't ignite. It is a gas furnace and the

My furnace burners won't ignite. It is a gas furnace and the pilot light stays on. I have replaced the thermocouple as well as the fan/load limiter. The thermostat tested good. The fan will blow if I put the thermostat on fan only but nothing happens when it is set on auto. When it does blow on fan only, it blows cold air because the burners don't ignite. Any ideas?JA: Did you double-check the thermostat's settings? And what about the filters?Customer: I did both.JA: Do you plan on doing the work yourself?Customer: If possibleJA: Anything else we should know to help you best?Customer: I don't think so

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Rick

Supervisor

27,380 satisfied customers
Do you need to remove the entire assembly to get to the

Do you need to remove the entire assembly to get to the thermocouple on a 7900 series coleman furnace?JA: Did you check the furnace's filters?Customer: I am trying to change the thermocoupleJA: Do you plan on doing the work yourself?Customer: I would like to learn to stop having to call someone for this one thing I have all the screws out but not sure how to get to the thermocoupleJA: Anything else we should know to help you best?Customer: its a 7900 series coleman

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Rick

Supervisor

27,380 satisfied customers
I have a utica boiler model mgb100hd, pilot is lit and its

i have a utica boiler model mgb100hd, pilot is lit and its receiving power but will not fire up, what can i do? changed the thermocouple and cleaned pilot valve with compressed air...

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Rick

Supervisor

27,380 satisfied customers
I have a Temco vented propane fireplace. The pilot light is

I have a Temco vented propane fireplace. The pilot light is lit, but will not light when I flip the switch to turn on fireplace. I tried jumping the wires, with no results. Connections seem to be good. ???JA: What confuses you?Customer: It's not lightingJA: Just to clarify, what type of fireplace is this?Customer: BCDV36AJA: Do you plan on doing the work yourself?Customer: I'm pretty handy. If it's something I can do, I will.JA: Anything else we should know to help you best?Customer: No

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Rick

Supervisor

27,380 satisfied customers
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  • My pilot will not stay lit on my Robertshaw unitrol 1000 gas valve tried changing the thermocouple still no good, Any ideas?
  • My gas control as two pilot one strait from the control box and the other one as a thermocouple, the one strait from the box light up the other don't go on any suggestion? thanks
  • How do you ckeck a tempermental gas valve if your thermocouple has just been changed.
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