Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-26-2014, 06:20 PM   #1
4 Rivet Member
 
Alumitater's Avatar
 
2007 25' Safari
Spanish Fort , Alabama
Join Date: Jul 2011
Posts: 296
heat pump not switching to furnace

Hoping some of you will have an answer to our issue.
We have a 2007 Safari 25' FB SE with the 13,500 BTU Dometic AC/heat pump.

Our heat pump and furnace both work fine but we have noticed the heat pump setting does not switch to "furnace" automatically when the temps drop below 30 degrees.

For instance, on a recent trip we had some nights which dropped into the mid 20's and the heat pump never switched to furnace (gas). I had to do that manually.

Any suggestions?
Thanks in advance.
__________________

__________________
Tom and Robin
2007 Safari 25' FB Twin
"If you have to go through a minefield....follow somebody"
Alumitater is offline   Reply With Quote
Old 01-26-2014, 06:24 PM   #2
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,400
Images: 5
Anytime 12V is removed from the CCC, you must reset it for the switchover to occur. Turn the CCC off with the switch on the bottom of the unit. While holding down the top an bottom buttons on the front, turn on the switch on the bottom. You should see FFF in the screen. If so, you're set. This is in your CCC manual...but vague, IIRC.
__________________

__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is offline   Reply With Quote
Old 01-26-2014, 07:21 PM   #3
4 Rivet Member
 
Alumitater's Avatar
 
2007 25' Safari
Spanish Fort , Alabama
Join Date: Jul 2011
Posts: 296
The batteries were replaced when we purchased the trailer, so I assume the 12 volt was interrupted....so the CCC should be reset?
__________________
Tom and Robin
2007 Safari 25' FB Twin
"If you have to go through a minefield....follow somebody"
Alumitater is offline   Reply With Quote
Old 01-26-2014, 08:26 PM   #4
Rivet Master
 
dznf0g's Avatar

 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 9,400
Images: 5
Yes, that's your first step.

Sent from my XT907 using Airstream Forums mobile app
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is offline   Reply With Quote
Old 01-27-2014, 07:06 AM   #5
4 Rivet Member
 
Alumitater's Avatar
 
2007 25' Safari
Spanish Fort , Alabama
Join Date: Jul 2011
Posts: 296
Thanks, Rich, I will. By the way, my wife and I really get a kick out of your quote.......
__________________
Tom and Robin
2007 Safari 25' FB Twin
"If you have to go through a minefield....follow somebody"
Alumitater is offline   Reply With Quote
Old 02-01-2014, 07:20 PM   #6
4 Rivet Member
 
Alumitater's Avatar
 
2007 25' Safari
Spanish Fort , Alabama
Join Date: Jul 2011
Posts: 296
Just an update as I diagnose this issue.
The reset on the Comfort Control Center did not cure the issue.

Checked with Dometic, they advised the unit should switch from heat pump to furnace below about 30 degrees. My problem is likely the ambient sensor (like a thermostat which tells the heat pump to switch to furnace) has failed.

I took the cover off the heat pump/AC unit on the roof and located the sensor.
I have attached a photo....it is the yellow bulb in the left center of the photo. It has a white wire which runs to a red plug and plugs into the P3 slot on the board.

Next step is to get the part number and order a replacement.
The saga continues.....
Attached Thumbnails
Click image for larger version

Name:	CIMG5767.jpg
Views:	76
Size:	262.2 KB
ID:	204766  
__________________

__________________
Tom and Robin
2007 Safari 25' FB Twin
"If you have to go through a minefield....follow somebody"
Alumitater is offline   Reply With Quote
Reply


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
Advice Needed: Duo Therm Air Conditioner & Heat Pump BKBroiler67 Furnaces, Heaters, Fireplaces & Air Conditioning 19 07-22-2015 06:40 AM
cheap heat rv comfort systems - electric conversion of furnace? hshovic Furnaces, Heaters, Fireplaces & Air Conditioning 13 07-17-2012 02:18 PM
Why a heat pump? easplund 2011 - 2015 International 22 03-19-2012 09:46 AM
Heat Pump glenbrowning Furnaces, Heaters, Fireplaces & Air Conditioning 9 01-04-2012 09:28 AM
Leak from AC heat pump housing danlehosky Furnaces, Heaters, Fireplaces & Air Conditioning 8 11-22-2011 11:44 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:24 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.