Community Forums

Tajfish · 11-08-2018, 10:45 PM

I went out to turn the furnace on because of cold weather. Zone 1 is normal but zone 2 on my 2007 Bounder dp Dometic CC ll only shows cooling, fan and off. “No furnace. “ Anyone have a solution. All worked last winter. I have two a:c rooftop units and two furnaces. The zone one furnace works and there are no error codes. Thanks

followingsea · 11-08-2018, 11:22 PM

Quote:

Originally Posted by Tajfish

Dometic CC

Classic failure of the KISS principle.

The little buttons tend to go bad and the switch contacts rear out. I had them go bad on two MH.

Google the part number. In my case it is obsolete. Found a guy on ebay that will refurbish the units.

Tajfish · 11-08-2018, 11:33 PM

Thanks, I will search on ebay in case I need to repair the control center. Just had my a/c with heatpumps (both died within a week) units replaced in June. Went back with just a/c units as we like the gas furnaces better for heat snd now this happens.

SarahW · 11-09-2018, 08:21 AM

Are you certain that you have two furnaces? Our Bounder has one furnace, and a heat pump on the rear a/c unit.

GlenB · 11-09-2018, 09:21 AM

You should see heat electric....heat gas...when moving your switch from off to heat. Do you have a three way switch??? Cold off heat...

Tajfish · 11-09-2018, 09:38 AM

Yes, I have two a/c units up top and two furnaces I have a 2007 Bounder dp 38S. It does not have switches to choose heating. It has the donetic control center ll digital controls. And the zone 2 just stopped showing “furnace” as a choice.
Still looking for solution

Gary RVRoamer · 11-09-2018, 12:49 PM

First thing to try is a reset of the t-stat. Should be instructions in your tstat manual.

Or use these instructions:

https://rvseniormoments.files.wordpr...r_recovery.pdf

Tajfish · 11-09-2018, 04:50 PM

Thanks Gary. I will be trying this reset tomorrow and will post results

Tajfish · 11-18-2018, 05:35 PM

Greetings, just wanted to let you all know I did not just walk away from this post. My phone started saying "too many redirections" whatever that is and I could not get back on the site. My hard drive crashed on my laptop, installed a new one and back on line.... that being said, I appreciated the advise from this forum.
I tried the reset on my Dometic CCll thermostat and it did not take care of the situation.. I read somewhere that I need to disconnect power to the system ? and see if that helps. So I found the wire schematic for the air conditioners (which were replaced in June this year - yes both) I will see if I can disconnect the cat5 cable if I can find it by taking the filter down from the ceiling in the Bounder. That is suppose to be the communication cable to the CCll.
Still appreciate any advise if someone has had this situation where you lose the "furnace choice" in mode on zone 2.

Tajfish · 11-21-2018, 04:12 PM

Quote:

Originally Posted by Tajfish

Greetings, just wanted to let you all know I did not just walk away from this post. My phone started saying "too many redirections" whatever that is and I could not get back on the site. My hard drive crashed on my laptop, installed a new one and back on line.... that being said, I appreciated the advise from this forum.

I tried the reset on my Dometic CCll thermostat and it did not take care of the situation.. I read somewhere that I need to disconnect power to the system ? and see if that helps. So I found the wire schematic for the air conditioners (which were replaced in June this year - yes both) I will see if I can disconnect the cat5 cable if I can find it by taking the filter down from the ceiling in the Bounder. That is suppose to be the communication cable to the CCll.

Still appreciate any advise if someone has had this situation where you lose the "furnace choice" in mode on zone 2.

In case someone has this issue in the future, I found out why there was no option for furnace on zone 2.
I found the dip switch in the ac control box for zone 2 had bee shut off ( probably when I got my new ac units installed this summer, the switch for the heat pump is right next to the furnace switch and needed to be turned off. Provably hit both at that time by mistake).
I checked zone one and turned off the dip switch for the heat pump, then did the reset that Gary showed me and all is working correctly now.

Ford_Racer · 11-29-2018, 08:05 PM

Tajfish, I have the same issue. Can you tell me what you mean by AC control Box and where you found it. I have tried the t-stat reset but it did not help. Both of my Furnaces aren’t showing up.

Tajfish · 11-29-2018, 09:21 PM

Quote:

Originally Posted by Ford_Racer

Tajfish, I have the same issue. Can you tell me what you mean by AC control Box and where you found it. I have tried the t-stat reset but it did not help. Both of my Furnaces aren’t showing up.

Yes, i found the control box for each air conditioner by taking the grill and filter down from the ceiling. Each unit had a control box about 6” square. There was a small door screwed on the bottom side and inside that door is the dip switches. They are labeled. After making sure the switches are set right you will need to do another reset on the control center tstat to activate any changes. Hope this helps.

Ford_Racer · 11-29-2018, 09:50 PM

Thank You Tajfish, I will try that this weekend. I appreciate your response.

Tajfish · 11-29-2018, 10:18 PM

https://cdn.dometic.com/assets/28/54...4.pdf?att=true
This is a link to my air installation manual, page 15 addresses the dip switches in the control box.