Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 02-23-2015, 01:45 PM   #1
Junior Member
 
GoodbyeCalif's Avatar
 
Join Date: Nov 2011
Posts: 22
Help - My Heat Pump comes on when I turn the furnace on

Fortunately right now we are in AZ (Nice and warm with a little chill in the AM). Our thermostat has a 5 way control (Fan, Cool, Furnace, Heat Pump and Off. When we set it to "Furnace" only the Heat Pump and Furnace come on. In just a few days we are heading to Salt Lake and expect to hit VERY cold weather. This is not good as the Heat Pump will be blowing cold air. I unplugged our rig from power and the furnace runs as normal on 12v/24v. Does anyone have any ideas? My own suspicion is the thermostat control is bad. :-o
__________________
MSgt, USAF, Retired + 1 Spouse (can't handle any more)
2006 Chevy Silverado 3500HD Dually
2013 Open Range 386FLR
GoodbyeCalif is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 02-23-2015, 02:08 PM   #2
Senior Member
 
dennis45's Avatar
 
Join Date: Jun 2012
Location: AB
Posts: 7,587
Quote:
Originally Posted by GoodbyeCalif View Post
Fortunately right now we are in AZ (Nice and warm with a little chill in the AM). Our thermostat has a 5 way control (Fan, Cool, Furnace, Heat Pump and Off. When we set it to "Furnace" only the Heat Pump and Furnace come on. In just a few days we are heading to Salt Lake and expect to hit VERY cold weather. This is not good as the Heat Pump will be blowing cold air. I unplugged our rig from power and the furnace runs as normal on 12v/24v. Does anyone have any ideas? My own suspicion is the thermostat control is bad. :-o
Do you have zone 1 and zone 2?
The furnace and front AC/heat pump is zone 1 (on mine anyway) and the bedroom is zone 2 for heat pump/AC.
Check using the mode if zone 2 is off and not sitting on heat pump.
Other than that, I can't think of any reason other than a bum thermostat.

P/S, mine defaults to furnace around 35 Deg even if the stat is set to heat pump on zone 1.
__________________
2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
dennis45 is offline   Reply With Quote
Old 02-23-2015, 02:10 PM   #3
Junior Member
 
GoodbyeCalif's Avatar
 
Join Date: Nov 2011
Posts: 22
The back unit is A/C only on a separate thermostat.
__________________
MSgt, USAF, Retired + 1 Spouse (can't handle any more)
2006 Chevy Silverado 3500HD Dually
2013 Open Range 386FLR
GoodbyeCalif is offline   Reply With Quote
Old 02-23-2015, 02:14 PM   #4
Senior Member
 
dennis45's Avatar
 
Join Date: Jun 2012
Location: AB
Posts: 7,587
Quote:
Originally Posted by GoodbyeCalif View Post
The back unit is A/C only on a separate thermostat.
Sorry, I should have looked at your signature. My system is not the same.
__________________
2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
dennis45 is offline   Reply With Quote
Old 02-23-2015, 03:17 PM   #5
Senior Member
 
kimbo's Avatar
 
Nor'easters Club
Freightliner Owners Club
Join Date: Feb 2014
Location: on the road
Posts: 213
Blog Entries: 1
if its more than 2 deg. below set temp, both systems may come on! what I mean is if its 65deg. inside and you set it at 70 both systems may come on,
kimbo is offline   Reply With Quote
Old 02-23-2015, 04:43 PM   #6
Junior Member
 
GoodbyeCalif's Avatar
 
Join Date: Nov 2011
Posts: 22
Quote:
Originally Posted by kimbo View Post
if its more than 2 deg. below set temp, both systems may come on! what I mean is if its 65deg. inside and you set it at 70 both systems may come on,
In the past if we set the thermostat to "furnace" only the LP furnace would come on. It seems we can't get away from the Heat Pump coming on no matter how we set things.
__________________
MSgt, USAF, Retired + 1 Spouse (can't handle any more)
2006 Chevy Silverado 3500HD Dually
2013 Open Range 386FLR
GoodbyeCalif is offline   Reply With Quote
Old 02-23-2015, 04:49 PM   #7
Senior Member
 
D Lindy's Avatar
 
Winnebago Owners Club
Join Date: Aug 2013
Posts: 1,636
Try disconnecting the power from the "T" Stat for about 1 min. then repower it, sometimes a simple reset is all it'll need.
__________________
2012 Journey 40U (Our Incredible Journey)
2008 Dodge Dakota(TOAD) 2005 Honda Shadow in TOAD
AF-1 braking system
D Lindy is offline   Reply With Quote
Old 02-23-2015, 05:10 PM   #8
Senior Member
 
Join Date: Apr 2010
Location: schaghticoke, new york
Posts: 424
If the heat pump comes on no matter what the setting look for a stuck relay on the control board. as the thermostat is low voltage and needs to activate a relay to control the 120V for the heat pump. although it is possible that resetting the thermostat might work as these electronic thermostats can do strange things ( that is if it is an electronic stat )
doublechevy is offline   Reply With Quote
Old 02-23-2015, 05:17 PM   #9
Senior Member
 
Join Date: Apr 2010
Location: schaghticoke, new york
Posts: 424
Added comment you could also shut the circuit breaker for the A/C Heat pump to prevent it from coming on. Make sure you still have power to the thermostat. if you shut off the breaker you may lose power to the control board??? Then nothing would work if you needed heat.
doublechevy is offline   Reply With Quote
Old 02-23-2015, 05:17 PM   #10
Senior Member
 
palehorse89's Avatar
 
Newmar Owners Club
Join Date: Oct 2009
Posts: 9,075
Maybe try a reset:
SYSTEM RESET
a. Turn the ON/OFF switch to .OFF. position.
b. Simultaneously depress and hold the MODE and ZONE
push-buttons while turning the ON/OFF switch to .ON..
FF should appear in the LCD display until the MODE
and ZONE push-buttons are released.
This is from the manual.
__________________
2012 Essex 4544 2011 Jeep JK, M&G Braking, 2014 MTI 27' Hog Hauler, Wireless brake control, 2006 Ultra & 1989 Springer
palehorse89 is online now   Reply With Quote
Old 02-23-2015, 06:42 PM   #11
Senior Member
Commercial Member
 
Join Date: Aug 2012
Posts: 726
If your fan mode is set to on, the overhead fan will run anytime the thermostat calls for heat from the furnace. This appears like the heat pump is on but actually only the fan. Set the fan mode to Auto.
__________________
Traveling RV Doctor
https://www.facebook.com/Traveling-R...5780632151951/
shiggs68 is offline   Reply With Quote
Old 02-24-2015, 02:58 AM   #12
Junior Member
 
GoodbyeCalif's Avatar
 
Join Date: Nov 2011
Posts: 22
It Finally Reset

After changing the fan from "Auto" to "High" and waiting at least two hours the system finally reset and started working correctly. Someone else posted that there is no ability to reset a Dometic Heat Pump (ie turn power off, etc). You have to wait those two hours regardless; turns out to be true. Thanks everyone for your input.

Lord help me as I head to SLC for two weeks then to Boise. Final destination Portland. We are in Lake Havasu City and the weather has been astounding for the last 3 months, usually in the 80's. SLC has highs of 44 and lows of 22. YUCK, I hate cold weather. Fortunately my rig should be just fine.
__________________
MSgt, USAF, Retired + 1 Spouse (can't handle any more)
2006 Chevy Silverado 3500HD Dually
2013 Open Range 386FLR
GoodbyeCalif is offline   Reply With Quote
Old 02-24-2015, 11:10 PM   #13
Senior Member
 
Join Date: May 2014
Posts: 118
Im glad I read this thread. I was getting ready to take my RV in for service for this exact problem.

Thanks to all!
__________________
2013 Winnebago 35G, CHF, UltraTrac 2, 5 Star Tune.
2005 Jeep Rubicon Unlimited Toad
Rvbuzz is offline   Reply With Quote
Reply

Tags
furnace, heat pump



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat Pump Question allegro1x Tiffin Owner's Forum 13 11-04-2014 04:26 PM
Heat Pump not heating prsmith Winnebago Industries Owner's Forum 7 02-27-2014 07:44 AM
Bounder: Water pump switches do not turn pump on roilacres Fleetwood Owner's Forum 8 01-19-2014 03:30 PM
Heat Pump Problem kamakalama Newmar Owner's Forum 8 01-17-2014 07:04 AM
Heat pump TexasTwoStep Excel Owner's Forum 1 11-25-2013 08:23 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 04:07 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.