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01-26-2018, 09:26 AM
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#1
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Junior Member
Join Date: Aug 2017
Posts: 4
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gremlins in furnace
why would my atwood furnace come on with thermostat off and all the way down i cleaned all connections on circuit board and reset switch, led light seems to flash all the time and furnace randomly comes on with propane turned on or off
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01-26-2018, 09:40 AM
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#2
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: May 2016
Location: Kamloops, BC, 60 miles from the Center of the Universe according to the Rinpoche, of the SF monks.
Posts: 7,321
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Is there a second thermostat somewhere?
More info about your rig would help. Someone may reply that has same or similar as yours.
Happy Glamping.
__________________
Happy Glamping, Norman & Elna. 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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01-26-2018, 10:41 AM
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#3
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Junior Member
Join Date: Aug 2017
Posts: 4
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2005 georgie boy pursuit anniversary model yes 2 thermostats its the front one only back furnace works perfect this is my 1st time posting anything anywhere i will learn all the in's and out's of posting goin for harley ride along the rio grande now LOL
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01-26-2018, 10:54 AM
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#4
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Senior Member
Fleetwood Owners Club
Join Date: Jun 2011
Location: Mississippi
Posts: 344
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If you have it set on heat pump if the unit senses it is colder than the heat pump could handle it will cut on the gas heating unit on my RV...GlenB
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01-26-2018, 05:24 PM
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#5
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Junior Member
Join Date: Nov 2016
Posts: 15
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We had the same issue and I called Inteletic thermostats. They said we had an electrical interference and to remove florescent light ballasts. I did that and have had no problems since.
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01-26-2018, 08:30 PM
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#6
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Senior Member
Join Date: Dec 2017
Location: Sacramento, California
Posts: 1,402
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I would swap the thermostats and see if the problem moves to the other unit.
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01-27-2018, 09:15 AM
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#7
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Senior Member
Join Date: Jun 2016
Location: Nine Mile Falls WA / Arizona City AZ
Posts: 1,066
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so my coach has a wireless thermostat that communicates with the AC/heater in the unit.... in addition I have a Direct TV receiver in the coach... In my unit there is a communication cross over from the frequencies shared by both remotes.... and my direct tv remote will trigger the time delay circuit on the furnace and cause it to start at an time when it wants.... when the ac is running, in the middle of the night, etc... and it won't shut off until the control for the AC/heater are cycled on/off...
A call to direct tv was a waste of time but a call to the furnace manufacture was in fact helpful, as they knew all about it... but had intention to fix the problem other than to suggest changing the circuit board in the control unit (AC) and wiring in a WIRED thermostat to control both units....
HOW I SOLVED the problem was to locate the 12 vdc wiring to the furnace... and install a lighted switch (when on) in that circuit... so if/when the control circuit board asks for heat when the unit is off... it can't power up and run... when we want the furnace to run we flip the switch...
We have also learned to cycle the control board on the AC/Furnace unit ON/OFF/ON/OFF before we go to bed AFTER we've shut down the direct tv box....
Hope this gives you an insight to sort out your issues.... it took us a while to figure this out... especially at 2 a.m. when the dog is waking us up because the coach is HOT...
__________________
Retired Business Owner, Re-manufacturing HD Clutches, Brake Shoes, Air Compressors, Sales & Installation of PacBrake and other Industrial Friction
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01-27-2018, 12:16 PM
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#8
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Senior Member
Join Date: Jan 2016
Posts: 531
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Quote:
Originally Posted by Bahamaniac
I would swap the thermostats and see if the problem moves to the other unit.
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And if that doesn't work, swap the circuit boards and see if the problem moves. I've had two Atwood boards do exactly what you're describing.
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01-28-2018, 10:46 PM
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#9
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Junior Member
Join Date: Aug 2017
Posts: 4
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Gremlins in furnace
Thank you for all the suggestions. I am going to swap stuff around and try and isolate the problem. I couldn't find this blog to check for updates and just found all the help one could ask for in my e-mail box. This is my 3rd RV and I have made it my mission to fix everything myself. Next I figure out leveler problem.LOL thanx again for the help.
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01-29-2018, 12:12 PM
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#10
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Junior Member
Join Date: Aug 2017
Posts: 4
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Gremlins in furnace
OK swapped thermostats,relay switch and circuit board one at a time. Problem still exists.I have one flashing red light. Code says low air flow switch.What and where can that be found ?
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