Question about Heating & Cooling
I say jumper the thermostat red and white wires. Sounds like the thermostat failed.
Posted on Nov 23, 2014
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Posted on Jan 02, 2017
I had the same problem with a Coleman. The problem is the blower relay. You can find this at http://mobilehomerepair.com
Posted on Oct 21, 2008
If you have a volt ohm meter take the two leads off the gas valve and ohm out the connection should have resistance for the coil. You said you have 12 volts from the thermostat white and red in the heating mode you should have minimum 26 volts. If you want to check the transformer should have 28 volts. Almost sounding like the transformer is getting weak. You can get parts for a 20 year old unit at any HVAC parts house. Try Washer Specialties here in Wichita Kansas they are on the web. Lowes even carries Transformers. Has to be rated 120 volt primary side secondary side 24 volts and 40 VAC.
Posted on Nov 24, 2008
Go to www.grainger.com and look for a "power pile generator" this is a millivolt thermocouple that may be just what you need to make your heater work again
Posted on Nov 12, 2009
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