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 05-27-2021, 04:03 PM   #1
Senior Member
 
Join Date: Dec 1969
Posts: 1,825
Zone 2 lost on 4 button CCC

hort version: Replaced A/C bedroom ducted vent with Dometic Air Conditioners 3314851.000 Adb Man Control
https://www.amazon.com/dp/B00HJQ86UO...roduct_details

Long version: Used to think that you were doing camping wrong if having a TV and air conditioner were needed.

Camping with small in a small trailer loaned out by the navy was great fun. So we bought a 16' lowliner. More great fun and better than motels between duty stations. Children get bigger so bought a new bunkhouse TT.

Without A/C!

July in 1980 found us in Tulsa OK at the KOA. A few days later on the way home from my new job, I backed the IH TravelAll to the TT and boosted a new A/C on the roof. Plugged it in, turned on, set the temp. Aaaaahhh!

When we retired on an old MH with 30 amp service. I am the proud owner of a duo-therm 4 button Comfort Control Center. Obsolete ten years later.

Welcome to the modern gadget filled RV world. At least we have the internet so we can ask for help and share experiences.

Same issue with the current MH except it is 50 amp and can run both A/C at the same time. Got another refurbished card for the CCC and was good to go. From the records from the previous owner, not the first replacement.

All is good for a few years, then zone 2 was no longer seen on the CCC. Could not run the bedroom A/C.

A frequent poster here linked a troubleshooting guide. My CCC is inconveniently located on an outside will with a heating duct blowing it.

What is the part number for the uncomfort control station?

I was able to determine the root cause. Failure of engineers to follow the KISS principle.

Option 1. Replace 4 button CCC with 5 button CCC and new cards for both A/C for $550+. This does not address root cause.

Option 2. Hire someone to find and fix a bad connection. This does not address root cause because a bad connection could occur again.

Option 3. Keep is simple stupid. If in 1980 you could control the A/C with knobs mounted on the A/C, why could it not be done the same way.

The answer is yes. First you much carefully check that wiring on the old duct and the new duct match. Since it was a Domestic roof unit I would expect inside part to match. Second, the opening to the vented ducting must be covered if you do not want to use them. Third, the holes for connecting the all thread have to me matched.


Bottom line is that I am happy with the fix for the rear A/C. If the front stops working from the CCC, I will use the same fix.
__________________
Kit & Rita (in memory)
37 foot ‘98 HolidayRambler Endeavor diesel pusher
followingsea 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 05-27-2021, 04:44 PM   #2
Senior Member
 
Join Date: Sep 2016
Location: Sarasota, FL
Posts: 4,902
I think I understand the problem to be that the rear stopped working and then you lost me.
And then you fixed it and I didn't see it happen in the text.
So what was the fix?
__________________
Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.
RKins is offline   Reply With Quote
Old 05-27-2021, 08:10 PM   #3
Senior Member
 
Join Date: Dec 1969
Posts: 1,825
Quote:
Originally Posted by RKins View Post
...
So what was the fix?
I replaced the existing A/C return air cover for ducted systems with a cover for not ducted systems. If you look at the link in the post you will see that it has manual controls.
__________________
Kit & Rita (in memory)
37 foot ‘98 HolidayRambler Endeavor diesel pusher
followingsea is offline   Reply With Quote
Old 05-28-2021, 06:28 AM   #4
Senior Member
 
Join Date: Sep 2016
Location: Sarasota, FL
Posts: 4,902
I get it now.
__________________
Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.
RKins is offline   Reply With Quote
Old 05-28-2021, 09:13 AM   #5
Senior Member
 
Join Date: May 2016
Posts: 496
That’s a great work-around.

My dad had a class C similar to the install you did and the board and thermistors (or whatever) failed. The cheapest way out was I installed a window AC (line voltage) thermostat to replace all the electronics. Worked just as well as the original pieces did.
__________________
Marvin (and Eileen) - Weekend RVer On A Budget
1997 34’ Gas Bounder / F53 Chassis | Towing 1996 Ford Ranger on Acme Dolly
MarvinG is offline   Reply With Quote
Old 05-28-2021, 10:41 AM   #6
Senior Member
 
Join Date: Dec 1969
Posts: 1,825
Quote:
Originally Posted by MarvinG View Post
That’s a great work-around.

.... Worked just as well as the original pieces did.
I would suggest that it works better because there are few failure modes

The first thing I do when something electrical doesn't work is check fuses, breakers, and voltage. Had 120 v ac but no 12v dc.

Once I had a 19 page document, I determined that there were at 12 reasons that I might not have 12v dc.

With this fix, 12v dc is not needed. No hidden fuses that require taking apart the A/C duct.
__________________
Kit & Rita (in memory)
37 foot ‘98 HolidayRambler Endeavor diesel pusher
followingsea 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
DS 2017 - Zone 1 vs Zone 3 Furnace specmga1 Newmar Owner's Forum 3 02-08-2018 01:02 PM
Dometic Blizzard NXT 15k Dual zone system doesn't see second zone Nu2FullTime RV Systems & Appliances 7 06-12-2017 10:37 AM
Duotherm CCC 4 Button ATSpringHil RV Systems & Appliances 7 06-23-2014 06:53 AM
Zone 2 AC not cold but Zone 1 is cold rosannemarie Newmar Owner's Forum 12 08-30-2012 08:08 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 07:39 PM.


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