Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
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 08-01-2015, 12:15 PM   #1
Senior Member
 
kustom's Avatar
 
Ford Super Duty Owner
Join Date: Aug 2012
Location: costa rica / river ranch fl.
Posts: 807
Dash A/C all new but not cooling - Help

hi had everything replaced new compreser / dryer / conderser / expansen
valve / new lines /o rings dash part cleaned flushed and tested shop charged
the freon and nothing hot air even bypassed heater thinking that might be it
still nothing whats up close to $ 2000 spend help
__________________

__________________
kustom 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 08-01-2015, 12:30 PM   #2
Registered User
 
mel s's Avatar
 
Join Date: Mar 2010
Posts: 8,777
Quote:
Originally Posted by kustom View Post
hi had everything replaced new compreser / dryer / condenser / expansion valve / new lines /o rings dash part cleaned flushed and tested shop charged the freon and nothing hot air even bypassed heater thinking that might be it still nothing whats up close to $2000 spend help
kustom
Me thinks you should find another shop.
Mel
'96 Safari
__________________

__________________
mel s is offline   Reply With Quote
Old 08-01-2015, 12:45 PM   #3
Senior Member
 
Spk64's Avatar


 
Join Date: Apr 2014
Location: Floyds Knobs, In.
Posts: 1,761
Something is not right there. In this case have to agree with Mel. Need to find a shop that can determine real problem versus just replacing parts.

On a better note for me. I just wrapped up repairing my dash AC this morning. Replaced expansion valve and dryer. Charged with the exact amount of R-134A mfgr recommended (3.5 lbs). And now have normal gauge readings and 47degree temps at dash with 90 degree ambient.


Steve
__________________
Steve
2002 Newmar Mountain Aire 4095
Spk64 is offline   Reply With Quote
Old 08-01-2015, 12:54 PM   #4
Senior Member
 
kustom's Avatar
 
Ford Super Duty Owner
Join Date: Aug 2012
Location: costa rica / river ranch fl.
Posts: 807
ok first my dash a/c never worked and we wanted to have cold a/c for
a long trip we were planing it was my call to replace everything to
have a new a/c unit . the shop put in 2 lbs of r 134 maybe i need
more r 134 ?
__________________
kustom is offline   Reply With Quote
Old 08-01-2015, 01:05 PM   #5
Senior Member
 
jacwjames's Avatar
 
Monaco Owners Club
Join Date: Jun 2014
Posts: 4,597
What kind of coach/RV do you have. Make sure the low pressure switch is connected and that electric switch for the compressor is connected.

Did you notice whether the compressor tried to kick in or not? If you didn't put enough Freon in the compressor will not come on.
__________________
Jim J
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi
jacwjames is offline   Reply With Quote
Old 08-01-2015, 01:22 PM   #6
Senior Member
 
Country Coach Owners Club
Join Date: Jan 2006
Location: Redding
Posts: 3,412
Take it back to the shop. They should not have collected your $2k without testing the result for success.

Did the AC work for you when you picked up the rig from the shop?

And they should know what volume the system requires for 134a. (Usually there is a label in the engine compartment that specifies the volume of 134a.)
__________________
Dean
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
deandec is offline   Reply With Quote
Old 08-01-2015, 01:44 PM   #7
Senior Member
 
Spk64's Avatar


 
Join Date: Apr 2014
Location: Floyds Knobs, In.
Posts: 1,761
R-134A systems perform best with the mfgr. specified amount. They say within 2ounces. Just guessing on the amount would not work out that well in my opinion. As others stated there should be a tag showing the exact amount.


Steve
__________________
Steve
2002 Newmar Mountain Aire 4095
Spk64 is offline   Reply With Quote
Old 08-01-2015, 01:56 PM   #8
Community Moderator
 
"007"'s Avatar


 
Nor'easters Club
Workhorse Chassis Owner
iRV2 No Limits Club
Join Date: Oct 2004
Posts: 26,726
Maybe you need to read this post if you have the Evans cooling heat system.
__________________
98KSCA, 99MACA, 03 KSCA-3740- 8.1 Chev-- ALLISON Trans, now in good hands
VISIT the NEWMAR QUICK TIPS & EASYMODS 1 & 2
QUICK TIPS # 3
RV SYSTEMS & APPLIANCES & RECALLS --- TECH INFORMATION
"007" is offline   Reply With Quote
Old 08-01-2015, 01:57 PM   #9
Senior Member
 
harleyjt's Avatar
 
Newmar Owners Club
Workhorse Chassis Owner
Join Date: Jan 2015
Location: Olive Branch, MS
Posts: 1,598
Should be label somewhere in engine compartment, usually on the A/C housing showing capacity. If not, go online and find it. That's what I had to do recently to recharge mine. Mine was the typical Evans unit. They have a website. As for the no cooling, does the compressor even engage? If not, look for a faulty switch or sensor. You haven't told us anything about the MH - make, year etc. Hard to even make guesses without knowing more specifics. Don't just add more refrigerant. I'm with a couple of others here - you need to find a different shop. I can't believe you paid them $2000 and the A/C still doesn't work? And they apparently don't have a clue?
jt
__________________
2005 Newmar Kountry Star Gas 3742
Workhorse W24, 8.1L/Allison 5-spd
JT, Em & the boys, Kong & Baxter (rescued grey tabbies)
harleyjt is offline   Reply With Quote
Old 08-01-2015, 01:58 PM   #10
Senior Member
 
Deny's Avatar
 
Winnebago Owners Club
Join Date: Feb 2014
Posts: 829
you did not say new evaporator, that is about only part left. But O-rings and fittings have to be installed right too. Sounds like you might not have the right technician.

I had a new central unit put in my house a few years back- I finally had to call another serviceman to come out & fix my brand new unit the installer could not make work.
__________________
Deny is offline   Reply With Quote
Old 08-01-2015, 05:16 PM   #11
Senior Member
 
kustom's Avatar
 
Ford Super Duty Owner
Join Date: Aug 2012
Location: costa rica / river ranch fl.
Posts: 807
my evaporator was cleaned and tested by a/c shop and was good
most of the cost were parts as a friend installed them for me when it
went to a/c shop all new parts had there plastic plugs the shop installed
the hoses o rings and dryer and said he put 2 lbs or r134 in called and said pick it up he was closing in 10 min.s and we had to leave the next day
charged us $ 275 then said that a rv is to big to cool and drove off we got in
zero cool just hot air we tryed by passing the heater core but no luck
ga. was 105 and fl. was going to be hoter we left and drove allmost all
night to try and beet the heat
yes i need a new shop motorhome is near lake wales fl. anyone known
a shop in that area ?
thanks
__________________
kustom is offline   Reply With Quote
Old 08-01-2015, 05:44 PM   #12
Senior Member
 
Join Date: Aug 2010
Posts: 1,882
Everyone just casts off 'make sure compressor is running' like its nothing. I know how to look at the AC under the hood of a car and see if the compressor is engaging but how do I do that on a DP. Doesn't seem like it would be so easy!


Sent from my iPhone using iRV2 - RV Forum
__________________
Terry & Alice
2006 Bounder 38L DP
2012 GMC Terrain
firedoc is offline   Reply With Quote
Old 08-01-2015, 07:11 PM   #13
Senior Member
 
Country Coach Owners Club
Join Date: Jan 2006
Location: Redding
Posts: 3,412
Quote:
Originally Posted by firedoc View Post
Everyone just casts off 'make sure compressor is running' like its nothing. I know how to look at the AC under the hood of a car and see if the compressor is engaging but how do I do that on a DP. Doesn't seem like it would be so easy!
Sent from my iPhone using iRV2 - RV Forum
I stand at the back of my DP, with an C8.3L Cummins, with the Dash AC controls turned off and the engine running at idle.

I note that the compressor pully is spinning madly driven by the compressor belt.

I also note that the Compressor Clutch, the center end piece of the Compressor, is not spinning with the rest of the compressor pully.

I walk to the front of my rig and engage the Dash AC.

I walk back to the engine and the compressor and note that the center end piece of the Compressor (the Clutch) is now spinning.

I conclude that the electrical path from my AC controls to the AC Compressor Clutch is good and that the Clutch is working as designed.
__________________
Dean
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
deandec is offline   Reply With Quote
Old 08-01-2015, 07:16 PM   #14
Senior Member
 
Country Coach Owners Club
Join Date: Jan 2006
Location: Redding
Posts: 3,412
Quote:
Originally Posted by Spk64 View Post
Something is not right there. In this case have to agree with Mel. Need to find a shop that can determine real problem versus just replacing parts.

On a better note for me. I just wrapped up repairing my dash AC this morning. Replaced expansion valve and dryer. Charged with the exact amount of R-134A mfgr recommended (3.5 lbs). And now have normal gauge readings and 47degree temps at dash with 90 degree ambient.


Steve
Yes just had a clogged expansion valve and low pressure line. Back operational now with two new expansion valves, two new dryers, and 5 lbs of 134a plus 8 oz of Pag46. Cool
__________________

__________________
Dean
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
deandec is offline   Reply With Quote
Reply

Tags
dash, cooling



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
Dash A/C Feels like the heat is on !!! kevin1959 Winnebago Industries Owner's Forum 15 07-19-2015 10:05 AM
Sightseer Dash A/C Kdkk09 Winnebago Industries Owner's Forum 4 07-04-2015 08:20 AM
A/C not cooling very well Pjzanella Newmar Owner's Forum 6 03-26-2015 02:12 PM
Check the dash A/C drain hose..photos brobox Entegra Owner's Forum 19 09-21-2014 02:49 PM
Dash A/C has a Smell of Engine Exhaust CountryFit Class A Motorhome Discussions 12 06-14-2014 10:42 AM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:10 AM.


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