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09-15-2022, 10:46 PM
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#1
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Established Member
Join Date: Mar 2019
Location: Cookeville
Posts: 48
M.O.C. #23654
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Furnace issue
We have a 2022 3121RL Legacy with IN-Command system. When we have our Gas Furnace on, air comes from AC vents. Does anyone know what could be causing this?
Thanks in advance
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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09-16-2022, 04:58 AM
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#2
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 1,823
M.O.C. #25165
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It sounds like the fan is either on low or high, instead of auto. I don't have the In Command system, but that's the only way mine will do what you describe.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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09-19-2022, 08:40 PM
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#3
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Established Member
Join Date: Mar 2019
Location: Cookeville
Posts: 48
M.O.C. #23654
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Thanks for reply. Yes, seems to work on Auto.
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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09-19-2022, 08:51 PM
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#4
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Seasoned Camper
Join Date: Nov 2020
Location: Gulfport
Posts: 89
M.O.C. #27628
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With iN·Command if you want furnace only, set to gas and fan off.
Also if there is 3 degree difference in room temperature and set point both furnace and heat pump will run.
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2021 Montana 3231CK, Legacy, Super Solar Flex, Dual Pane Windows, Slide-out Awnings
2021 Dodge RAM 3500 4x4 Limited 6.7 HO DRW, Trailer TPMS, B&W Companion Hitch
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09-20-2022, 08:48 AM
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#5
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 4,936
M.O.C. #1920
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Yes, per M&M, it is designed that when furnace is on gas and fan is on auto, hi or low, the heat pump fan will circulate the air. The reason we know is when we were boondocking, we were using more battery than an identical rig next to us. After talking to Keystone, they confirmed that is the proper operation. So, when boondocking with furnace on, we have to set fan to off.
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Ron and Terrie Ames with Sirius - MOC #1920
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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09-20-2022, 03:19 PM
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#6
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Established Member
Join Date: Mar 2019
Location: Cookeville
Posts: 48
M.O.C. #23654
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OK, will give it a try, thanks
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David & Debbie
2022 3121RL Legacy Edition, Cobalt, 2021 Chev 2500 Diesel
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09-28-2022, 03:01 PM
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#7
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Established Member
Join Date: Jun 2019
Location: Fruitland park
Posts: 12
M.O.C. #24308
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Quote:
Originally Posted by Tricky
We have a 2022 3121RL Legacy with IN-Command system. When we have our Gas Furnace on, air comes from AC vents. Does anyone know what could be causing this?
Thanks in advance
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I have same unit. Ac is also a heat pump. I know because it cost me twice as much as just ac.
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09-30-2022, 04:06 AM
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#8
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Montana Fan
Join Date: Jul 2019
Location: Mesa
Posts: 177
M.O.C. #24588
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If boondocking, only the furnace fan can run. The furnace fan operates on 12 volts. The heat pump fan cannot operate UNLESS there is a source of 120 volts to the camper. The heat pump components (compressor and fan motor) only operate on 120 volts.
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09-30-2022, 05:44 AM
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#9
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 4,936
M.O.C. #1920
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Fire station 12, many of us have AC throughout even while Boondocking, either via generator or our electrical system being inverted.
__________________
Ron and Terrie Ames with Sirius - MOC #1920
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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