Go Back   Keystone RV Forums > Keystone Tech Forums > Technical Corner
Click Here to Login

Thread Tools Display Modes
Old 07-20-2018, 07:43 AM   #11
Senior Member
ChuckS's Avatar
Join Date: Mar 2014
Location: Mountain Home, Idaho
Posts: 486
A/C Question (Impact 332)

So they installed this single zone thermostat and wired both control board 12 volts lines to one thermostat.


I donít see why you could not upgrade to CCC2 multi zone thermostat and replace that single control unit with multi zone and wire control wires accordingly for each unit.

It would beat option of trying to install another single zone thermostat for other unit and fish the wires

I also wonder if your unit has TWO remote room temperature sensors mounted? One in bedroom and other in living room areas

If not then you have two issues to deal with... and if RV donít have the two separate remote temp sensors this explains why they installed a single zone thermostat.


2007 GMC Classic club cab 4x4 Duramax LBZ
2014 Alpine 3010 RE. 34 foot fifth wheel
ChuckS is offline   Reply With Quote
Old 07-20-2018, 10:00 AM   #12
Frank G
Senior Member
Frank G's Avatar
Join Date: Feb 2017
Location: Pemberville
Posts: 498
First of all Welcome

A couple of thoughts, was this a dealer installed option?

I noticed the second unit gets installed in the garage and from the Keystone Literature showing one AC in the main living area the thermostat is located in the garage. Are there any issues about running a AC in the garage and the possibility of pumping deadly fumes to the living area?

Personally, I think the multi unit thermostat is in order.

Lastly, not all AC units are created equal, some are nosier than others. In our last THTT there was no TV with the AC running. sad

In our present unit we have 2 AC units and operate them as described in the OP's first post.

2017 Laredo 325RL
Florida Snowbirds, Travelers Rest Resort
Frank G is offline   Reply With Quote
Old 07-20-2018, 12:50 PM   #13
Site Team
chuckster57's Avatar
Join Date: Jul 2014
Location: Modesto
Posts: 8,010
Originally Posted by Frank G View Post
In our present unit we have 2 AC units and operate them as described in the OP's first post.

What your saying is if you turn in one AC unit, both operate? You canít turn one off?

2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
chuckster57 is offline   Reply With Quote
Old 07-20-2018, 04:51 PM   #14
Senior Member
xrated's Avatar
Join Date: Oct 2016
Location: "Murvil, TN
Posts: 1,279
Switching to the Multi-Zone thermostat CCC II is not just a matter of changing thermostats. The Single Zone has three wires running to it...+12VDC, -12VDC, and the Comm or communication wire which is orange. The CCC II uses a 4 wire setup involving telephone type connectors....probably the RJ11 type connectors...plus the control boxes in the A/C units are different.

2016 F350 King Ranch Crew Cab Dually Diesel 4x4
2017 Keystone Impact 303 T.H.
2014 Yamaha FZ09 (highly modded)
Excessive payload capacity is a wonderful thing

"If it ain't Fast....It ain't Fun"
xrated is online now   Reply With Quote

Thread Tools
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
Forum Jump

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RVģ is a registered trademark of the Keystone RV Company.

All times are GMT -8. The time now is 04:56 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.