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06-16-2012, 02:16 PM
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#1
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Senior Member
Join Date: May 2011
Posts: 195
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duo therm 5 button comfort control
Has any one had a problem with the temp sensor in there comfort control. I have 2 zones, 1 with a sensor in the bed room and the other sensor is the control. Zone 1 which is the control wont shut the furnace off unless you shut the zone off or turn the control off. This is the 3rd control I have had to change
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06-17-2012, 12:17 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 18,646
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Does Duo Therm have a help line ?? Might be worth a try to find out.
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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06-18-2012, 11:38 AM
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#3
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Community Moderator
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,118
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It could be thermostat or the control board in first AC unit. If there has been any work done on system there a small switch's that have to be set on board for thermostat to operate correctly.
5 BUTTON SYSTEM
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06-18-2012, 08:42 PM
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#4
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Junior Member
Join Date: Jan 2012
Posts: 10
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007 is on to something with the control board. When you use the unit for cooling does the zone that has issues shut off when the desired temp is satisfied? We need to establish whether this is a thermostat issue or a control interface issue. If the unit works fine in cooling and is able to request heat from the furnace but never turns the furnace off once temp is satisfied then I would lean towards the control board in the affected zone.
Like 007 said as well, the dip switches must be configured correctly for your situation. Being that it can start the furnace but not stop it, I am thinking the dip switches are in the correct position. There is a relearn/reset command that is done any time a change is made to any of the control boards, may be a good idea to try that?
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06-19-2012, 09:24 AM
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#5
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Senior Member
Join Date: May 2011
Posts: 195
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The units are origonal except for 3 thermistats over a 2 year period. Evertime it happens i get a new thermostsat and the problem goes away for 6 to 8 months i would say. What is the reset relearn comand. I have always had to do the teach comand when it is new so it will discover the kind of systems on board
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06-19-2012, 05:21 PM
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#6
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Community Moderator
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,118
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In the 5 button system link there are are four resets that I see three for heat pumps and one system reset for system on page 8.
The dip switch's have to be set for furnace display on your control display also, so it is controlled in zone #1.
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06-20-2012, 06:27 AM
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#7
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Junior Member
Join Date: Jan 2012
Posts: 10
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The relearn process and the reset that 007 refered to are the same thing I was talking about. One thing I forgot to ask is what kind of furnace/heat system we're dealing with. The fact that after a thermostat replacement, the problem goes away for some time... that makes it fun.
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06-20-2012, 09:20 AM
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#8
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Senior Member
Join Date: May 2011
Posts: 195
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its a hydronic heating system. I am sarting to wonder if it could be electriclal interference from posibbally a small appliance charger
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06-20-2012, 06:54 PM
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#9
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Community Moderator
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,118
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Funny things can happen with defective florescent ballasts transformers interfering with operations.
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