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Old 03-18-2016, 07:43 PM   #21
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I'd be tempted to get 10' of furnace wire, splice it to the existing wire, connect it to the thermostat, then move it someplace and see if there is a difference. Possibly even hang it from the ceiling or something?
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Old 03-19-2016, 06:17 AM   #22
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Quote:
Originally Posted by Cdash View Post
I'd be tempted to get 10' of furnace wire, splice it to the existing wire, connect it to the thermostat, then move it someplace and see if there is a difference. Possibly even hang it from the ceiling or something?
That's a good suggestions - thanks
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Old 05-20-2016, 02:03 PM   #23
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An update on our furnace issue.

In short - problem solved, but have no idea how.

Dealership had removed the furnace and did extensive bench testing under the direction of Atwood, with all tests showed proper furnace operation. Then after re-installing the furnace the dealership was in continual contact with Jayco providing Jayco with results of additional requested test, measurements, etc.
While the dealership was waiting for a response from Jayco on the last information sent them, we picked up the trailer for a planned camping trip.
During that camping trip, the furnace worked fine without any short cycling that we experience previously.
We've been out twice and both times we used the furnace extensively, with no issues.

My only guess is that the removal, bench testing, and re-installation of the furnace resolved the issue.
Could have been a slight kink in a duct, or something similar that was resolved when the furnace was re-installed.

Thanks to everyone who provided comments and suggestions.
Happy & Safe Camping.
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Old 05-23-2016, 09:03 AM   #24
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Probably a loose wire, thermocouple lead, or even a loose connection at the heater vent between the vent and the flexible hose. I once had a hose that was torn, but never knew. We were heating the area under the cabinet where the hose was located, and any airspace connected with that cabinet. Nice and toasty under there, but the furnace was operating way too long to heat our old toyhauler trailer. It could be the cause of the thermostat immediately heating up two degrees. You may be heating the air inside of the wall where the thermostat is located. At the very least, it could have been a loose electrical connection as well, so that as it all heated up, it lost adequate continuity, and hence voltage, to keep it all operating properly.
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