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Old 01-05-2014, 08:48 AM   #1
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No Heat in New-to-Me '06 Greyhawk 31SS

Since we bought our motorhome a little over a month ago, I haven't had plans to take it out. Still trying to figure out some of the issues that are new to me, a former travel trailer owner. My son loaded up his wife and their blended family of five teen-aged kids and headed to South Florida right after Christmas. They stayed in the In-Laws house while there, so heat wasn't a consideration until he started home and spent the night in a truck stop in north Alabama. It got cold that night; enough to wake him up around 2:00 a.m. He couldn't get the furnace to produce any heat. With the generator running, he set the thermostat and the fan came on (I think) but no heat. He tried every switch he could find and fiddled around with no effect. He confirmed that propane was available by lighting the stove top (and turned it off). Eventually, he gave up and started the engine to get some heat from up front. He called me after he got home to report on the trip and asked me about it. I had no answer. I never had a problem with the furnace in the trailer. In fact, I rarely used it since we did most of our camping in warmer weather. So, Jayco friends, WHAT IS THE FURNACE START-UP PROCEDURE? I've heard about spiders and their love of propane odor. Any input is appreciated.
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Old 01-05-2014, 08:21 PM   #2
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Nothing specific that I know of.

Sounds like it needs to be checked. Did the fan stay on?

In mine there is an automatic igniter, not sure about an 06.
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Old 01-06-2014, 04:45 AM   #3
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Try the trouble shooting section of the furnace owners manual (not the Jayco manual). And the manufacturers website and customer service number as well. They can help you diagnose and often repair your furnace. If it's something more complicated, replacing an 8 year old furnace is an option to consider.
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Old 01-06-2014, 02:00 PM   #4
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Maybe something is not aligned correctly in the sparker?
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Old 01-06-2014, 03:24 PM   #5
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Air in the line? bug nest, spider web, dirt dauber nest in furnace guts?
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Old 01-07-2014, 11:35 PM   #6
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Occasionally I had problems with the furnace in my 04 Jayco JayFlight. It was always bugs in the intake or exhaust. Not hard to solve just annoying. I used compressed air to blast everything out then it worked fine. You should hear the clicking of the igniter if you don't then that is the problem. BTW the stove may work with a low propane level but the furnace will not. I assume that this unit has separate propane heater and AC controls if it does there may be a tiny switch on the side of the thermostat that needs to be pushed toward the center of the thermostat for it to work. If you have a digital thermostat then you won't have that switch.
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Old setup:
2004 Chevrolet Silverado 3500 LT with a 2004 Jayco JayFlight 29BHS
2014 Greyhawk 31FS with a 2007 Tahoe toad
New setup:
2014 Thor Palazzo 33.3 with a 2007 Tahoe toad
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Old 01-08-2014, 11:32 AM   #7
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We have a '05 Greyhawk 31SS we bought a month ago. The heater is integrated in the a/c unit on mine and is controlled by a electric hand controller. You have to point the controller directly at the unit in the ceiling for it to work (best is to stand under the thing). There is an "emergency" heat button on the roof unit that you can press that should turn it on no matter what. And mine is electronic ignition. Frustrating controller though.

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Old 01-08-2014, 04:49 PM   #8
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Also mine has a thermostat in the bedroom. Haven't figured out how it works in the system yet. It seems to be disconnected. Haven't had time to really check it out yet.

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Old 01-09-2014, 05:58 AM   #9
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@ Helimark, the one in the bedroom is probably for the vent fan.
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Old 01-09-2014, 04:59 PM   #10
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Thanks for that TX_Arvee. That will give me a starting point, as I turned it on and nothing happened. But I thought it was for the heater, not the fan.


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