|
11-27-2017, 08:37 PM
|
#1
|
Montana Master
Join Date: Sep 2017
Location: Willis
Posts: 896
M.O.C. #20587
|
Rooftop Dometic Runs with Furnace
Whenever I switch the wall thermostat to "furnace" in either the bedroom or kitchen/living, the related a/c unit runs the fan on the roof. The air coming out the ceiling vents is room temperature. When the fan cycles on to bring warm air out of the floor vents, the rooftop unit will continue to have the indoor fan run. Is this what others are seeing?
__________________
2018 Montana 3791RD (SOLD)
2017 Ram 3500 DRW 6.7 Cummins Aisin, B&W RVK3600 (SOLD)
|
|
|
11-27-2017, 08:56 PM
|
#2
|
Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
|
Most likely you have the thermostat set for the fan to run on high or low. When you run the furnace the fan must be set on auto.
|
|
|
11-27-2017, 08:59 PM
|
#3
|
Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,362
M.O.C. #4831
|
X2 what DQDick wrote. The fan must be set to AUTO when in furnace mode. Otherwise the fans in the A/C kick in. I know it doesn't make sense, but that is the way it is.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
|
|
|
11-27-2017, 08:59 PM
|
#4
|
Montana Master
Join Date: Sep 2017
Location: Tacoma
Posts: 1,567
M.O.C. #20475
|
You need put the furnace in auto mode using the keypad for the furnace just scroll through till you see auto and then the ac wont run.
Bob & Carol
Washington St
2017 352RL 2008 D0dge 3500 DRW crew cab 4x4 LB 6,7L
|
|
|
11-27-2017, 09:25 PM
|
#5
|
Montana Master
Join Date: Sep 2017
Location: Willis
Posts: 896
M.O.C. #20587
|
I think the options are furnace, cool and heat pump
__________________
2018 Montana 3791RD (SOLD)
2017 Ram 3500 DRW 6.7 Cummins Aisin, B&W RVK3600 (SOLD)
|
|
|
11-27-2017, 10:30 PM
|
#6
|
Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,697
M.O.C. #12947
|
There is a separate fan switch function that will give you AUTO, LO, MED, and HI. You press the fan button multiple times until the display shows AUTO, and this will stop the fan in the A/C unit from running when in HEAT mode.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
|
|
|
11-27-2017, 11:20 PM
|
#7
|
Montana Master
Join Date: Oct 2017
Location: Bee Branch
Posts: 2,620
M.O.C. #20693
|
Glad we have this site and there are some helpful folks out there. It took me a while to figure out the combinations on the new style thermostats as well.
|
|
|
11-28-2017, 06:54 AM
|
#8
|
Montana Master
Join Date: Sep 2017
Location: Willis
Posts: 896
M.O.C. #20587
|
Okay, thanks for the pointers. Here's the drill...
The mode button is capacitive so only just simple contact with it will change it. When off the display is blank. 1st contact will display a blank screen except "OFF" will show in the bottom right corner. Multiple contacts will cycle the display through "FAN" and a speed setting with a small degree sign in the top right corner. THEN, to toggle through the different fan settings (high, low, auto, etc) one must then use the triangle "buttons" on the right. This is the part I was missing. I was simply repeatedly touching the "MODE" icon on the left. So it was toggling through "COOL", "HEAT PUMP", and "FURNACE". I clearly did not know to use the icons on the right except to change the temperature. Lesson learned and thanks to all who responded with help. Sometimes I feel like a moron ;=]
__________________
2018 Montana 3791RD (SOLD)
2017 Ram 3500 DRW 6.7 Cummins Aisin, B&W RVK3600 (SOLD)
|
|
|
11-28-2017, 10:48 AM
|
#9
|
Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,929
M.O.C. #20477
|
Not a moron, just someone dealing with a thermostat which could be more intuitive. The lessons learned here make the forum invaluable.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
|
|
|
11-28-2017, 12:40 PM
|
#10
|
Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
|
Quote:
Originally Posted by AZ Traveler
Not a moron, just someone dealing with a thermostat which could be more intuitive. The lessons learned here make the forum invaluable.
|
Agree completely!
__________________
2020 Montana 3790RD Legacy EditionOnan, TST TPMS, TrailAir pin, Discs,
2013 F350 DRW 4x4 CC LBViair 10007, Ride-Rites, Westin HDx, 12k Smittybilt
|
|
|
11-28-2017, 01:39 PM
|
#11
|
Montana Master
Join Date: Oct 2017
Location: Bee Branch
Posts: 2,620
M.O.C. #20693
|
Quote:
Originally Posted by AZ Traveler
Not a moron, just someone dealing with a thermostat which could be more intuitive. The lessons learned here make the forum invaluable.
|
AMEN!
|
|
|
11-28-2017, 09:47 PM
|
#12
|
Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
|
Don't worry at all, that's what this forum is for. And by the way, you should see some of the early questions and problems us "old timers" posted when we were just starting out.
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|