Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 08-28-2010, 04:34 PM   #1
Senior Member
Workhorse Chassis Owner
Join Date: Jul 2006
Posts: 286
A/C heater valve problem

Today, I replaced the A/C Evans heater control valve. The temperature coming out of the A/C dash vent was 75 and the outside temperature was 96. I thought that the dash vent temperature should be better. I then placed a tempoary clamp on the hose below the valve, same hose that some IRV2 members have clamped using an on/off type valve. Now, my dash temperature is 82. I removed the clamp, and dash temperature is still at 82. Did I damage something? The hose on both sides of valve is the same temperature by touch. Is this correct? The A/C outlet hose is not cooling to the touch. Thanks for help.................

2015 Flagstaff Super V Trailer
Model 26VFKS
Towing with F150 Crew cab 5.0L
TXredfish 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 08-28-2010, 09:08 PM   #2
Community Moderator
"007"'s Avatar

Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 24,429
There are three hoses in picture bottom one is AC line coolant, top two are the heater hose's.

Does your new Evans valve completely close with wire rod when operated from the dash?

98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans, now in good hands
"007" is offline   Reply With Quote
Old 08-29-2010, 07:12 PM   #3
Senior Member
Workhorse Chassis Owner
Join Date: Jul 2006
Posts: 286
"Does your new Evans valve completely close with wire rod when operated from the dash?"

"007" - I don't understand your question "with wire rod". I think that the valve was closing, but not sure.

However, I waited a couple of hours and went back out to the MH and tried it again. The input temperature (measured at the return near the floor on passenger side was 85. The temperature at the dash was 65 which means a 20 degree difference. Referring to the picture you included. The AC line coolant is now cooling to the touch, the heater line to the right of the valve is very warm to the touch, the heater line to the left of the valve is barely warm to the touch so based on this I think the valve is closing. So I maybe, this 20 degree difference is the best I can expect based on the Evans web page. Thanks
2015 Flagstaff Super V Trailer
Model 26VFKS
Towing with F150 Crew cab 5.0L
TXredfish is offline   Reply With Quote
Old 09-04-2010, 11:15 AM   #4
Senior Member
pkunk1's Avatar
Ford Super Duty Owner
Join Date: Jun 2010
Location: N. NM
Posts: 182
When I replaced my heater core, I discovered that although the remote heater valve appeared closed, it was allowing some fluid through. Rather than replace it, I filed the stop a little to allow the valve to close. The AC works much better now.
'99 Coachman Mirada F53 V10
TST monitors, Scangage, AGM house batteries
in the shadow of Latir Peak, NM
pkunk1 is offline   Reply With Quote

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
Check valve Atwood H20 Heater Belgique Winnebago Industries Owner's Forum 12 05-17-2015 12:44 AM
Mixing Valve in Water Heater David and Fran MH-General Discussions & Problems 6 01-12-2010 02:42 PM
A/C Low voltage problem? dugit999 Winnebago Industries Owner's Forum 3 06-25-2009 05:02 PM
Bounder: Water Heater Check Valve RamblinFever Fleetwood Products Owner's Forum 6 03-31-2008 10:39 AM
Basement A/C, no problem? hogbreth Winnebago Industries Owner's Forum 4 03-17-2005 02:27 AM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:35 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.