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Old 04-14-2019, 06:25 AM   #1
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Heat won't turn off - 1997 Solaris

Fast on the heels of repairing my leak, I've got another big problem with my 1997 Solaris T2653. As soon as I plug in the electric, the heat goes on full blast and stays on no matter what I do with the wall thermostat control, including turning heat/cool to "off."



Until a few days ago it all worked fine; the heat went off and on with temperature setting, etc. Now I have to switch the power off (Picture #2) on the fuse box to get the heat off. I am thinking of pulling the "furnace" fuse until I can replace the thermostat control, so I can at least have power in the camper. Do you think that's a good plan?



Anybody have directions on how to replace the wall mounted thermostat control? Do you think the thermostat is the problem?


Pictures: 1. Wall thermostat. 2. fuse box 3. List of switches. 4.list of fuses
Attached Images
File Type: jpg RV Furnace 1.jpg (29.4 KB, 8 views)
File Type: jpg RV Furnace 2 fuses.jpg (68.7 KB, 4 views)
File Type: jpg RV Furnace list of switches.jpg (43.7 KB, 4 views)
File Type: jpg RV Furnace list of fuses.jpg (55.8 KB, 4 views)
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Old 04-14-2019, 06:45 AM   #2
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Certainly sounds like the thermostat.
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Old 04-14-2019, 09:38 AM   #3
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To remove the furnace fuse, do I just pull it straight out?
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Old 04-14-2019, 09:43 AM   #4
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Yes those are standard blade type automotive fuses...most are the same size there are larger.
I need a needle nose pliers but I have thick fingers.21t5hCHvhfL.jpeg
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Old 04-14-2019, 05:18 PM   #5
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Pretty much thermostat controls are are not much more than a on off switch so two things bum thermostat or shorted thermostat wire.
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Old 04-15-2019, 06:52 AM   #6
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Thanks, I pulled the fuse so now I can use the electricity without a blast of heat. I'll replace the thermostat and hope that fixes it!




Quote:
Originally Posted by mainah View Post
Pretty much thermostat controls are are not much more than a on off switch so two things bum thermostat or shorted thermostat wire.
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Old 04-15-2019, 08:00 AM   #7
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Before replacing the thermostat, just disconnect it and see if the problem is still there. No point in buying a new one if that's not going to fix it.
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Old 04-15-2019, 11:06 PM   #8
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Luckily I have one of these thermostats stashed away. The main cover just pulls off toward you. Once off, make sure all the wires are connected and that none randomly broke off or came loose, causing one to touch another.

If all wires appear to be in place, it's likely the thermostat is bad. The furnace control should only be two wires. As others have suggested, if you loosen and disconnect all the wires from the thermostat, while making sure they also aren't touching, you should be able to turn the breaker back on and the furnace should do nothing. If it still comes on, then there's a problem with the furnace or the wiring between the thermostat and furnace.

Pictures attached of what it looks like inside.
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File Type: jpg IMG_2465.jpg (100.6 KB, 6 views)
File Type: jpg IMG_2466.jpg (97.8 KB, 7 views)
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2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9467.8 (as of 5/26/19)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR
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Old 04-16-2019, 05:56 AM   #9
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Oh wow, thanks for the instructions! I will try this.
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