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Old 03-17-2013, 10:35 AM   #1
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Unhappy Furnaces Won't Come On

We picked up our new Phaeton 36 yesterday and rushed over the pass to miss a snow storm. Could not get the thermostats to heat the coach last night and this morning no heat at all - fans runs for a while but no heat coming out. Both thermostats are acting the same. Have propane and we are connected to shore power. Info that came with the coach does not have any detailed troubleshooting info that I can find. We're freezing Any help soon is appreciated....
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Old 03-17-2013, 10:38 AM   #2
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Is the unit propane? Is the propane on? Is the stove top propane, does it light. If you have more than one zone on the thermostat make sure all zones are set for heat.
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Old 03-17-2013, 10:49 AM   #3
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Propane's on - stove works nicely - check on the thermostats
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Old 03-17-2013, 10:49 AM   #4
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Units does not appear to firing - dual furnaces
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Old 03-17-2013, 10:51 AM   #5
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Is the LP tank valve open and if it is may require air to be removed from LP lines and you can your stove top on to help get rid of air in lines.
Some furnaces also have a gas valve that needs to be opened near furnace location.
OK than check fuses on your 12v fuse panel pull and reset check wiring near furnace may have fuse there for furnace also, may have to pull inlet air vent panel to access.
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Old 03-17-2013, 10:53 AM   #6
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Would you know where would this valve be located - unfamiliar with this coach....
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Old 03-17-2013, 10:55 AM   #7
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What type therm do you have Dometic???
Needs to be programmed on each zone for furnace to display on therm.
May have zone 1 & 2, select by pushing mode button.
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Old 03-17-2013, 10:56 AM   #8
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As CHCam42 , says check the operation of other propane systems . The manual valve on the propane tank has a "Line burst " protection feature, that slows the release of propane in the event of an accident. The way to re-set , is close the valve, then with all propane appliances turned off, open the valve very slowly. Back pressure in the system keeps the , line burst, from shutting off the propane flow.
Then check the stove top for flame , light all the burners, to bleed out any air in the system, then try the furnaces again.
Hope this helps.
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Old 03-17-2013, 10:57 AM   #9
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When you turn the furnace on do you hear clicking sound? That will be the igniter. Try to start it several times may have air in the gas line. If no clicking sound check breakers going to the unit. Does the blower come on?
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Old 03-17-2013, 11:01 AM   #10
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The LP valve for tank would be in lower compartment outside maybe marked LP FOR FIRE DEPARTMENTS and valve would be on tank, other valves mentioned would be behind the furnace panel outside wall if you have them.
Who is mfg of furnace?
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Old 03-17-2013, 11:02 AM   #11
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I will reset the valve. Thermostat's are RVComfort units.... FYI, have turned on the heat pumps for now and we are no longer freezing..... Update shortly.. What a great forum, thanks for letting me join and participate....
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Old 03-17-2013, 11:05 AM   #12
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Where are the TIFFIN OWNERS??? the guy is cold.
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Old 03-17-2013, 11:50 AM   #13
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In Red Bay, getting their furnaces fixed, sorry, I couldn't resist. Seriously, I doubt that the small valves on the furnaces are turned on. This is a dealer item that is suposed be conducted during the pre delivery process.
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Old 03-17-2013, 12:01 PM   #14
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Thumbs up

Hey all, thanks so much for your input. I closed the valve on the propane tank, reopened it, bled any air (appeared to be none), set the thermostats up since the heat pumps got coach up to temp. Viola, all appears to be working as it should now and furnaces raised the temp quickly and turned off as they should when reaching set point. I will come back if the is a premature assessment, however, we are much better off being warm
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