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Old 03-24-2018, 08:00 AM   #1
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200MBLE Surveyor heater question

Wife and I are on our first camp in our new 2018 200MBLE...been looking at the manual for the heater and canít seem to find an answer, so as always I turn to you guys and gals....ok when I turn on the heat on the thermostat the air conditioner starts blowing air out of all the ceiling vents. The heater under the fridge blows out nice hot air, but the air coming out of the ceiling vents isnít. Is this the way it works???? And if so anyone know why? Thanks in advance

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Old 03-24-2018, 08:02 AM   #2
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Put your Dometic thermostat on "auto" and it will all work fine. I assume that is what you have.
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Old 03-24-2018, 08:09 AM   #3
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Old 03-24-2018, 09:24 AM   #4
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Glad you got it. The HVAC system is probably one of the bigger frustrations of these trailers. High and low are (as you found out) worthless. Auto works as it should.

On ours, the heater vent in the bathroom blows extremely well, the 2 in the living area are ok and the bedroom one is useless (I'm beginning to think the duct is crushed somewhere in the underbelly). However, I do think the AC works well.

This year, I put a small space heater (1500w) in the middle of the floor and that has helped even the temperature out greatly in the trailer.

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Old 03-24-2018, 09:32 AM   #5
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Originally Posted by JAXCMC View Post like a champ....thought I tried everything....feel kinda dumb....thanks Fonzie....
Don't feel dumb, you'd be surprised how people ask the same question every spring.
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Old 03-24-2018, 09:32 AM   #6
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Just to close... yes, this is the way it works.

Having the A/C fan be able to come on with the furnace is an option given the consumer.
Hot air rises and the A/C fan is to help distribute the air more evenly inside the rig.

You can choose to use it or not, depending on how you have your thermostat set.

This is one of the most asked about subjects on the forum, especially in colder weather.

I am simply amazed at the amount of dealers not explaining this to their customers.
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Old 03-25-2018, 05:52 AM   #7
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This is funny, in the middle of the night camping when the temperature drops and I need heat, I don't want a system that needs "special instructions" on how to get to auto.
All I did was pop the breaker on the AC and I didn't have to worry about which mode I was in.
Also I had to remove about 2 ft of duct to have the bedroom area blow enough hot air in it.
Next I am going to put a T in one of the vents so the underbelly gets warm air to help keep the tanks warm. ( the DC is needed to run my wife's dialysis machine.)
I also had to move the Propane hose retainer screw from under my fresh water tank, it was long enough to start to dig into the plastic tank. The 1/4 piece of wood wasn't thick enough for the screw they used to hold the hose.

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