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Old 04-20-2013, 05:59 PM   #1
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1999 Tropi-Cal Furnace issue

So I am the second owners of this unit and the second furnace under the bathroom sink has never turned on before. I had a tech out and from the outside of the RV he had the unit turned on and running. My control panel has 2 zones but not for furnace. He said he could rewire so both came on a same time but I think that would be alot of heat. My tech thought maybe there was a second control panel.

Any ideas of thoughts,


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Old 04-20-2013, 10:26 PM   #2
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The tech didn't know?
What brand is the thermostat and furnaces?
Usually, if the first furnace is controlled off the main thermostat, the second one should be too. If there is not a separate, standard furnace thermostat, then possibly there is a problem and the second unit is not hooked up right or the control board in the AC that controls the furnace is not ok.

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Old 04-21-2013, 07:50 AM   #3
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Check the "Dip" switch positions on both the front and back AC Control Box circuit boards. they have to be set for "two" furnaces for both to work with a single Thermostat. Rook
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Old 04-27-2013, 05:25 PM   #4
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National control panel is a tricky one. I had same problem and then i decided to read up on the matter. Found the answer ..... Just a matter going to the zone you want and holding the button down for 10 secs. Sometimes it would take a few more secs.......give me a call if you want. Rod 951 609-9370
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