Themocouple Replacement

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  #1  
Old 10-27-02, 09:33 AM
Kevin_N_Phoenix
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Question Themocouple Replacement

I have a Colemen model 7670 natural gas furnace, in a mobile home. I'm not sure of the year, but it is believed to be in the mid-70's.

I need to replace the thermocouple, but for the life of me cannot see how to remove it.

Does anyone know of a website that I can look for a schematic?

I know it doesn't get very cold here in Phoenix, but HELP it may hit 50 tonight!! lol

I'd appreciate any help anyone may have to offer.
 
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Old 10-27-02, 11:58 AM
bigjohn
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Which end are you refering to? At the pilot burner they usually just slide out and at the gas valve there should be a small nut which you unthread with a wrench.
 
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Old 10-27-02, 12:04 PM
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i hate those

units. need a couple of 4 inch tall guys for the job.
 
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Old 10-27-02, 01:02 PM
Kevin_N_Phoenix
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Thanks

I got it out and replaced, but didn't seem to be the problem. It has a new thermostst and thermocouple, pilot light stays lit, but furnace wont kick in.

What other possibilities...the regulator?
 
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Old 10-27-02, 01:30 PM
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Question 24vac

Do you have 24 volts ac across the valve ??
I'll bet there is some type of wiring problem
 
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Old 10-27-02, 01:40 PM
Kevin_N_Phoenix
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Thanks Jul

I cant find my electrical tester, may have to runout to picl one up. Your referencing testing across the ignition module? I erroneously refered to it as the regulator earlier.
 
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Old 10-27-02, 01:48 PM
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Lightbulb Gas valve

The gas valve is the control where you light the pilot, it should have 2 wires going to it.
24 volts AC turns the gas on to the main burners.
If you aren't getting 24vac on the valve you will need to troubleshoot the wiring or call a pro
 
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Old 10-27-02, 01:50 PM
Kevin_N_Phoenix
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Thanks Again

Thanks for all the help...I will check it out.
 
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