Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > 5th Wheel Discussion
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 06-10-2014, 02:18 PM   #1
Senior Member
 
Rolfsted's Avatar
 
Join Date: Dec 2011
Posts: 273
Coleman central a/c unit freezing

We usually camp in early spring/late fall so have only used the central air one time. This year we couldn't get away until first of June so we need a/c. It was fine the first few days but then started dripping from the cover. I got up on the roof and pulled off the cover and inner metal cover and one side was completely iced over. I didn't see any blockage and cleaned the filter on the cover up on the ceiling. That didn't help. I saw what looks like a valve to charge the unit but most say it can't be done.

Thank goodness the previous owner installed another a/c in the bedroom as it works fine. I do like the central unit better as it cools the whole place and shuts off just like home when the temperature is reached.

The unit is on my 1994 Tourmaster 5th wheel so I'm sure it's 20 years old.

Thanks
__________________

__________________
Rolfsted 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 06-10-2014, 02:26 PM   #2
Senior Member
 
Join Date: Dec 2013
Location: Plantation, Fl
Posts: 1,068
The only time I've had an AC freeze up is when I've had the temperature setting to the max cold setting. I just don't turn it to the coldest setting anymore.
__________________

__________________
2014 Itasca Spirit 31K
2016 Mazda CX5, on an Acme tow dolly, 4 trips 5800mi
Now 2017 RWD F 150 with a drive shaft disconnect
Mich F is online now   Reply With Quote
Old 06-10-2014, 02:52 PM   #3
Senior Member
 
Indy1951's Avatar
 
Join Date: Jan 2013
Location: Indianapolis,Indiana
Posts: 246
Quote:
Originally Posted by Rolfsted View Post
We usually camp in early spring/late fall so have only used the central air one time. This year we couldn't get away until first of June so we need a/c. It was fine the first few days but then started dripping from the cover. I got up on the roof and pulled off the cover and inner metal cover and one side was completely iced over. I didn't see any blockage and cleaned the filter on the cover up on the ceiling. That didn't help. I saw what looks like a valve to charge the unit but most say it can't be done.

Thank goodness the previous owner installed another a/c in the bedroom as it works fine. I do like the central unit better as it cools the whole place and shuts off just like home when the temperature is reached.

The unit is on my 1994 Tourmaster 5th wheel so I'm sure it's 20 years old.

Thanks
The most common causes are 1-dirty coils 2-dirty filters 3-blower motor not running at full rpm 4-low on refrigerant. Other causes not so common. 1-restriction in system 2-expansion valve faulty (if you have one).
__________________
John & Berenda
2014 Palazzo 33.2
KarKaddy SS / Chevy Cruze
Indy1951 is offline   Reply With Quote
Old 06-10-2014, 04:51 PM   #4
Senior Member
 
Join Date: Jul 2013
Posts: 141
Try running your fan on high when you use the air after you defrost it. If it has a defrost sensor make sure it is mounted at the coil to detect ice-usually at the second coil up from the bottom.
__________________
sk734 is offline   Reply With Quote
Old 06-10-2014, 06:46 PM   #5
Senior Member
 
Join Date: Sep 2012
Posts: 4,232
Quote:
Originally Posted by Indy1951 View Post
The most common causes are 1-dirty coils 2-dirty filters 3-blower motor not running at full rpm 4-low on refrigerant. Other causes not so common. 1-restriction in system 2-expansion valve faulty (if you have one).
Spot on.
__________________
jesilvas is offline   Reply With Quote
Old 06-10-2014, 07:57 PM   #6
Senior Member
 
94-Newmar's Avatar
 
Join Date: Nov 2009
Posts: 2,043
Another way they will freeze is if the supply/return air divider has slipped out of the way or the gasket between them has failed. This allows chilled air to be drawn right back up into the unit - will cause freezing quickly.
__________________
94-Newmar Kountry Star 40-KSDP
Spartan/Cummins 8.3C-300HP/Allison 3060 WTEC-II/25yr RV Tech RVIA Certified/Onan-Cummins Certified
94-Newmar is offline   Reply With Quote
Old 06-10-2014, 09:30 PM   #7
Senior Member
 
Join Date: Aug 2002
Location: Where ever I park it
Posts: 1,225
Also, the ice itself will give you an indication of what to check. White frosty ice is usually an air flow problem and hard clear ice is a plugged drain normally.
__________________
1996 Dodge CTD auto, #100 fuel plate,advanced timing, upgraded turbo, 2017 Forest River 365RK
MnTom is offline   Reply With Quote
Old 06-11-2014, 07:34 AM   #8
Senior Member
 
Rolfsted's Avatar
 
Join Date: Dec 2011
Posts: 273
Thanks all. The ice was clear and pretty thick on the side of the fins. First thing I noticed when I got on the roof and pulled off the cover was that there wasn't any water draining from the unit. In fact the area where it should be draining from was completely dry.

When I get it home I'll pull everything off and check it out.
__________________
Rolfsted is offline   Reply With Quote
Old 06-11-2014, 09:54 AM   #9
Senior Member
 
Join Date: Aug 2002
Location: Where ever I park it
Posts: 1,225
Quote:
Originally Posted by Rolfsted View Post
Thanks all. The ice was clear and pretty thick on the side of the fins. First thing I noticed when I got on the roof and pulled off the cover was that there wasn't any water draining from the unit. In fact the area where it should be draining from was completely dry.

When I get it home I'll pull everything off and check it out.
That tells me your drain is the problem. Hopefully an easy fix!
__________________
1996 Dodge CTD auto, #100 fuel plate,advanced timing, upgraded turbo, 2017 Forest River 365RK
MnTom is offline   Reply With Quote
Old 06-12-2014, 05:31 AM   #10
Senior Member
 
Rolfsted's Avatar
 
Join Date: Dec 2011
Posts: 273
I'll keep you posted
__________________
Rolfsted is offline   Reply With Quote
Old 06-12-2014, 05:52 AM   #11
Senior Member
 
kimbo's Avatar
 
Nor'easters Club
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Feb 2014
Location: on the road
Posts: 198
Blog Entries: 1
looks like most people missed you saying you saw valve that looks like it was installed to charge unit. if it is charging valve then your unit might be low on ref.
__________________
kimbo is offline   Reply With Quote
Old 06-13-2014, 05:36 AM   #12
Senior Member
 
Rolfsted's Avatar
 
Join Date: Dec 2011
Posts: 273
Well, that's what I thought too, but like you said nobody mentioned it.

I'll still take it apart and make sure it's clean and then see how I can get it charged.
__________________
Rolfsted is offline   Reply With Quote
Old 06-14-2014, 04:41 AM   #13
Senior Member
 
Indy1951's Avatar
 
Join Date: Jan 2013
Location: Indianapolis,Indiana
Posts: 246
Quote:
Originally Posted by kimbo View Post
looks like most people missed you saying you saw valve that looks like it was installed to charge unit. if it is charging valve then your unit might be low on ref.
See post number 3 item number 4 "low on refrigerant"
__________________

__________________
John & Berenda
2014 Palazzo 33.2
KarKaddy SS / Chevy Cruze
Indy1951 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
2008 Providence a/c info wanted jsim111 Fleetwood Products Owner's Forum 20 08-05-2014 11:46 PM
Coleman A/C Replacement Questions duncanracing RV Systems & Appliances 2 06-10-2014 06:28 PM
Sketchy Duotherm A/C artrosch RV Systems & Appliances 14 03-14-2014 02:16 PM
Rear A/C Issue Koop Alpine Coach Owner's Forum 10 02-21-2014 08:28 PM
Roof Air Lower Unit Question justgottarv Vintage RV's 1 01-17-2014 08:56 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:28 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.