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I have a coleman gas furnace model#7966A856 ,burner comes on but not fan, it was coming on for a very short while, but then stopped altogether, I hooked up the motor direct and it is working, I have replaced the fan switch, the manual limit switch, and the thermostat, have not replaced the lower limit swithch, could this be the problem?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

Therinnaiguy
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SOURCE: Coleman furnace blower runs continuously

You should be seeing 120 volts to the igniter. Anything less requires either a replacement of the transformer, start relay or control module.

Posted on May 30, 2008

muttandjeff
  • 359 Answers

SOURCE: Rollout Limit Switch Keeps Tripping

have someone check the gas presure most likely too high no more than 11

Posted on Dec 17, 2008

Gort007
  • 1187 Answers

SOURCE: COLEMAN FURNACE BURNER NOT LIGHTING

There is a thermocouple "wire" that is supposed to be touching the pilot flame.
The thermocouple senses a flame (hot) and allows the heater to operate. If the thermocouple does not sense that the pilot is on, then it will not allow the furnace to operate.
Bend the thermocouple wire (or the pilot tube) so that the pilot flame is touchingg the thermocouple.

That shouls work now.

The air from the fan should not be blowing through the same cxavity that the pilot is in.
If it is, then you may have a leaking furnace whereby carbon monoxide may be seeping into your living quarters.
If the fix above works and the pilot stays on after the heater starts, then there is probably no leak.

Let us know the results ... post a comment or "RATE" this or another expert's solution.

Posted on Sep 16, 2009

  • 89 Answers

SOURCE: Coleman Presidential II Model 7656A Mobilehome Furnace blower p

have you changed t-stat? if so you need to increase the heat anticipator. if you have a fan limit switch, the setting may need adjusting. Thay will change with age

Posted on Nov 01, 2009

heatman101
  • 43501 Answers

SOURCE: Coleman furnace -- fan runs, ingniter won't light,

Hi,
The chances are that the furnace was running when the power went out. This will cause the high limit switch to cutout and needs to be manually reset.
You will find that switch in the blower compartment near the blower. Usually somewher near the highest point of the cabinet.
Push the little red button firmly till it clicks.
When the power goes out while the furnace is running the heat builds up because the blower shuts down immediately and causes this limit switch to cut out.
If you have a electric tester you can also follow the low voltage circuit till you find the open switch. Ther is usually a wiring schematic on the door cover of most furnaces.

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Posted on Dec 09, 2009

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There is a thermocouple "wire" that is supposed to be touching the pilot flame.
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