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Old 12-29-2012, 07:22 AM   #11
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The HP in our MH is not designed to be the primary heat source. It is useful when its in the 50s and you want to take the chill out of the air. When its colder than that, its time for the LP furnace. The furnace, besides heating the inside, also has heat ducts to the dump valves and water pump, and provides heat around the holding tanks.

IMHO, trying to make the HP do something it wasn't designed for (primary heat in cold cold weather), is unneeded. The LP furnace was designed for that. I had a HP for years at home. It was designed (with electric backup coils) to be the primary heat source. But when temps were in the 30s or below, all you really had was an electric furnace. I celebrated the day we finally had access to gas and could replace the HP with an efficient gas furnace.
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Old 12-30-2012, 05:49 AM   #12
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I agree with RVBill3 that the heat pump is best for cool temperatures. We bought the heat pump option to reduce LP gas usage. This saves some money but more importantly saves the hassle of getting the LP tank refilled. We prefer to stay in state parks so LP refill isn't always convenient. I installed an Extend-a-Stay kit so I can supplement the relatively small (10 gallon) tank on our Sunseeker with a grill gas tank. Grill gas tank exchanges are fairly common now, although they are more expensive per gallon than getting your own tank refilled.
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Old 12-30-2012, 04:50 PM   #13
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I have a question! My furnace is coming on without the 110v and staying on but barely getting warm but with 50amp service it's on and off. 2013 325res 5th wheel Crusader, 4th time out, 2nd time with problems, 1st time bedroom slide motor went out. Any advice on this heat situation and I will tell you what I have already done. Thanks!
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Old 12-30-2012, 05:07 PM   #14
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RV furnaces use 12 volt (battery) power for the fan and control circuit and LP gas for the heat source. They do not use 110v power. Make sure gas is turned on and battery is charged (or connect to shore power or generator). My experience is that furnace puts out HOT air (as a home gas furnace does).

Since the unit is new, I would return to dealer for service if possible.
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Old 12-30-2012, 07:28 PM   #15
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I'm running it by the dealer tomorrow, this is our 3rd trailer and have not had this issue before. It's getting LP and its set to Auto on the fan and furnace for the heat setting, I have only used the heat one other time and it worked well but not this time, I'm thinking it may be the thermostat. It worked fine when hooked up to 50 amp service last time but for some reason when on regular service it now keeps cycling on and off, the exhaust is warm coming out of the side of the trailer but just no heat inside hardly at all. I thought I would just try to run it off the 12v and it runs but does not cycle on and off and still hardly any heat. It's been one problem after another with this trailer.
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