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03-08-2018, 09:50 AM
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#1
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Junior Member
Join Date: Apr 2017
Posts: 16
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Atwood A/C Heat Pump No Heat
Stopped over night. Plugged into electrical and turned the thermostat to heat. Specifically turned off the button for furnace. The Atwood never kicked on, only the furnace. Turned it to cool and the Atwood came on. Turned it back to heat and the Atwood turned off and the furnace turned on. Am I doing something wrong to get my rooftop a/c heat pump to give heat? Or, am I mistaken about my unit being a heat pump as well as an air conditioner?
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03-08-2018, 09:57 AM
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#2
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,144
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What thremostat do you have?
Is there a selection for heat pump?
What made you believe you have the heat pump option?
Also... heat pump and heat strip are different from each other too.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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03-08-2018, 10:13 AM
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#3
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Senior Member
Join Date: Sep 2017
Posts: 223
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Depending on where you were at last night, the temps may have been too low for the heat pump to work, and then it goes straight to furnace.
If you select the furnace button, it uses the furnace only for heat instead of selecting heat-pump first, then furnace.
The cut-off temperature between the unit using heat-pump vs furnace is 45 degrees. Below this, it will automatically select the furnace.
__________________
Aaron
2019 DX3 36FK
All Electric w/Cab Over
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03-08-2018, 10:57 AM
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#4
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Junior Member
Join Date: Apr 2017
Posts: 16
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Quote:
Originally Posted by 5picker
What thremostat do you have?
Is there a selection for heat pump?
What made you believe you have the heat pump option?
Also... heat pump and heat strip are different from each other too.
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03-08-2018, 10:58 AM
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#5
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Junior Member
Join Date: Apr 2017
Posts: 16
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The Isata3 is supposed to come with the AC heat pump
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03-08-2018, 11:11 AM
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#6
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Just as confused as you
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,108
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Quote:
Originally Posted by DLBartlett
The Isata3 is supposed to come with the AC heat pump
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As said before, heat pumps do not work when the temperature falls below 45 degrees. They are used to take the chill off on cool mornings or days when you will most likely wear a sweater when indoors.
__________________
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired
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03-08-2018, 02:04 PM
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#7
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Commercial Member
Join Date: Nov 2007
Location: Bristol, IN
Posts: 18,979
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Temp?
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03-08-2018, 05:59 PM
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#8
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Senior Member
Join Date: Jun 2015
Location: Pensacola, FL
Posts: 1,645
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BC to the rescue..........
__________________
2019 Coachmen Freedom Express 192RBS
2015 T12RBST Flagstaff Hardside
Disclaimer: The actual value of my "Two Cents" of advice varies just like a bitcoin.
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03-08-2018, 07:49 PM
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#9
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Senior Member
Join Date: Mar 2015
Location: Akron, OH
Posts: 3,294
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Quote:
Originally Posted by Bluepill
BC to the rescue..........
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I never pictured Brian that way.
__________________
2023 Dynaquest XL 3700BD
Had...2018 Force HD, 2016 Force, 2014 Thor 33sw
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03-08-2018, 11:25 PM
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#10
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Just as confused as you
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,108
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BC stands for big cat. 
__________________
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989, Seasonal since 2000.
Car Shredder Op/Tech, Scrap Metal Recycling - retired
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03-09-2018, 09:28 AM
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#11
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Commercial Member
Join Date: Nov 2007
Location: Bristol, IN
Posts: 18,979
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Quote:
Originally Posted by halla
I never pictured Brian that way.
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I really think what he meant was... I don't have that kind of vertical.
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03-11-2018, 10:14 AM
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#12
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Senior Member
Join Date: Nov 2007
Posts: 145
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Atwood Customer Service
I can assure you that if you call Atwood customer service your experience will be less than enlightening .....My new Atwood Air Command heat pump would not heat and numerous calls by me then after taking it back to the installing dealer he got no where with them....The agents read from a script and have no clue about how things work.....In the heat pump mode the evaporator fan never shuts off. My compressor will only run for 1-2 minutes at a time in heat mode but works fantastically in cool mode.....
I went to school for heating and air conditioning so I had an idea what the problem was but Atwood emphatically told me it was designed to work that way. By they way they told both me and the installer that there was NO wiring diagram for the unit....NOTHING is ever built without a wiring diagram of some sort. Trying to troubleshoot the unit is near impossible.
In short advise all your friends to DO NOT BUY AN ATWOOD AIR COMMAND A/C
HEAT PUMP.....  
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Linear Mode
