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10-01-2017, 07:34 AM
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#1
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Junior Member
Join Date: Mar 2017
Location: Florissant
Posts: 13
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Keystone Impact 303 Furnace
Thermostat and Furnace just went out. Do not have the manual. Dometic DM2862RBFX. Fuse is good. Any thoughts on what I can check?
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10-01-2017, 07:46 AM
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#2
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,348
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DM2862RBFX is a Refrigerator and doesn't have anything to do with the thermostat or furnace.
When you say "went out" what is happening/ NOT happening?
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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10-01-2017, 07:52 AM
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#3
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Junior Member
Join Date: Mar 2017
Location: Florissant
Posts: 13
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Keystone 303 Furnace
Opps! I will find the furnace model number.
Anyhow, I had my RV plugged into house 120. Had the furnace running to keep the RV warm during cold weather (been in the 30's this week). Went out to check the heat in the RV. Furnace was not running. Thermostat does not turn on when I press the button. Have full battery charge (dual batteries). Have full propane. Running generator right now. Disconnected the house electrical. With no manual, I have no idea where to start. Will see if I can find furnace model number. Thanks!
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10-01-2017, 08:13 AM
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#4
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,348
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Furnace model isn't important at this time. If the Thermostat is the LC D diplay Dometic three button there is a manual:
https://www.manualslib.com/manual/72...92.html#manual
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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10-01-2017, 08:31 AM
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#5
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Junior Member
Join Date: Mar 2017
Location: Florissant
Posts: 13
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Its an Atwood AFMD35121.
Thanks, I will download the thermostat manual.
Appreciate it!
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10-01-2017, 08:35 AM
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#6
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Junior Member
Join Date: Mar 2017
Location: Florissant
Posts: 13
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Thermostat is a Airxcel. Looks like a cheaper version of the Dometic.
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10-01-2017, 08:41 AM
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#7
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,348
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Quote:
Originally Posted by coyotewind
Thermostat is a Airxcel. Looks like a cheaper version of the Dometic.
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Airxcel is not Dometioc. It's Coleman/Mach. here you go:
https://www.airxcel.com/coleman-mach...cument-library
some of those thermostats have a small glass fuse under the panel.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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10-01-2017, 08:49 AM
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#8
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Junior Member
Join Date: Mar 2017
Location: Florissant
Posts: 13
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Thanks, I will go check the fuse!
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10-01-2017, 09:12 AM
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#9
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Junior Member
Join Date: Mar 2017
Location: Florissant
Posts: 13
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fuse is a 0.2A/250V, voltmeter says ok.
replaced 15A furnace fuse and still nothing.
also pressed heater reset and that did nothing.
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10-01-2017, 09:26 AM
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#10
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Senior Member
Join Date: Jun 2017
Location: Downey, Ca.
Posts: 344
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Quote:
Originally Posted by coyotewind
fuse is a 0.2A/250V, voltmeter says ok.
replaced 15A furnace fuse and still nothing.
also pressed heater reset and that did nothing.
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It appears you understand basic wiring. Did you check to see if thermostat is able to sent a heat signal to the furnace? Another possibility is the cut out or limit switch within the furnace it's self is bad?
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10-01-2017, 09:53 AM
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#11
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Junior Member
Join Date: Mar 2017
Location: Florissant
Posts: 13
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I will check the power to the thermostat and see if it can send a signal to the furnace.
Where might the cut out switch be located. Don't have the furnace manual nor schematics.
thanks!
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10-01-2017, 10:34 AM
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#12
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Senior Member
Join Date: Jun 2017
Location: Downey, Ca.
Posts: 344
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Quote:
Originally Posted by coyotewind
Its an Atwood AFMD35121.
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Quote:
Originally Posted by coyotewind
Don't have the furnace manual nor schematics.
thanks!
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Google is everyone's friend most often. This is the closest PDF manual to your model I've located. http://www.americanrvcompany.com/***...m-Furnaces.pdf
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