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Old 03-03-2015, 06:59 AM   #1
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Thermostat on Berkshire.

I have a 2014 Berkshire 390 FL
With front & rear furnaces.
My back furnace wants to cycle on & off in short sessions.

Both furnaces are controlled by the same thermostat. (Zone 1 & 2)

My question is as to where the actual thermostat is for the two furnaces?

The controller is on the wall in the kitchen just before the hall going into the bath area.

Furnace 1 controls the kitchen forward. Furnace 2 controls the bath and bed area.

Russell
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Old 03-03-2015, 07:31 AM   #2
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I think you are asking where the bedroom 'temperature sensor' is?

My 2014 RB has it on the wall in the bedroom.
Small black plastic maybe 1 1/2 inches.
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Old 03-03-2015, 07:43 AM   #3
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I think you are asking where the bedroom 'temperature sensor' is?

My 2014 RB has it on the wall in the bedroom.
Small black plastic maybe 1 1/2 inches.

Ok. Sets up 3/4 high on the front wall of the bedroom?? If that is it mine is white & looks like a plastic vent of some sort. 1 1/4 round ??

Russell
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Old 03-03-2015, 07:53 AM   #4
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Ok. Sets up 3/4 high on the front wall of the bedroom?? If that is it mine is white & looks like a plastic vent of some sort. 1 1/4 round ??

Russell

So Dan is this what you think is the sensor ?

RussellClick image for larger version

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Old 03-03-2015, 08:29 AM   #5
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So Dan is this what you think is the sensor ?

RussellAttachment 70587
Yes, that is what I have read on another thread someplace here on FRF.

Wait a minute, that may have been the Smoke Detector.
Now I'm not sure
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Old 03-03-2015, 08:38 AM   #6
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The picture shown above is the sensor for zone 2. Mine 14 390BH, the sensor is black and it is about where the door stops when slid open. My zone 2 also cycles more which I think is due to 1. The bedroom is not as tightly insulated as the front and 2. The position of the sensor is right by the slide and window....

Jason
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Old 03-03-2015, 08:48 AM   #7
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I found that the wall the sensor is on gets airflow from the hvac systems, and heated or cooled air would blow by the sensor from its access hole in the wall. I plugged around the hole and reduced cycle times, and improved comfort.


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Old 03-03-2015, 09:08 AM   #8
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This is mine in a 2011 390RB. On the bedroom wall.
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Old 03-03-2015, 11:42 AM   #9
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I found that the wall the sensor is on gets airflow from the hvac systems, and heated or cooled air would blow by the sensor from its access hole in the wall. I plugged around the hole and reduced cycle times, and improved comfort.


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Ok. I don't quite understand your fix. Plugged around the hole ?? Can you explain in more detail. Thanks.

Russell
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Old 03-03-2015, 02:08 PM   #10
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I removed the sensor grille, it is held in place by two screws. The first time I discovered the air blowing by the sensor, we were on the road, so I used crumpled paper towel to temporarily "caulk" the hole, leaving the sensor bulb in the living area, and remounted the grille. This caused a reduction in rear hvac cycling, and a longer rear hvac runtime as the sensor now reads room temperature, not hvac outlet temperature. The paper towel has been replaced with fiberglass similar to the type used for home window and door installation insulation between door and house framing.


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