Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
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 06-26-2008, 03:35 AM   #1
Junior Member
 
Join Date: Aug 2007
Location: redmond or.
Posts: 25
Help!!! it's hot. Some one knows the answer to this problem. It is going to be 90 degrees today and my front air is not working right. It will come on and give cold air for about 5 min. then the heat pump will come on and the air turns hot. Where should I look for the prob. and how can I fix it? Any help will be apprieceated. Thanks. Gary
__________________

__________________
GaryL 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 06-26-2008, 03:35 AM   #2
Junior Member
 
Join Date: Aug 2007
Location: redmond or.
Posts: 25
Help!!! it's hot. Some one knows the answer to this problem. It is going to be 90 degrees today and my front air is not working right. It will come on and give cold air for about 5 min. then the heat pump will come on and the air turns hot. Where should I look for the prob. and how can I fix it? Any help will be apprieceated. Thanks. Gary
__________________

__________________
GaryL is offline   Reply With Quote
Old 06-26-2008, 04:31 AM   #3
Administrator in Memoriam
 
Hitchhiker's Avatar


 
Appalachian Campers
Join Date: Jan 2000
Location: Buladean, NC
Posts: 8,127
Are you certain the heat pump actually turns on or are you presuming that to be the case because the AC is blowing hot air? The diagnosis of an AC blowing hot air would be different from diagnosing one that had reversed it's cycle and switched to 'heat pump'.

It'd be exceptional if it were running on 'heat pump' while the outside temps are in the 90's.
__________________
'11 GMC Acadia SLT AWD
'11 GMC Sierra 1500 4x4 Extended Cab
Hitchhiker is offline   Reply With Quote
Old 06-26-2008, 05:25 AM   #4
Junior Member
 
Join Date: Aug 2007
Location: redmond or.
Posts: 25
Yes Hitchiker, I am absolutjy sure the heat pump is starting up, The air is very hot. This morning when it is cool out side I tried the air and 6 min. later the heatpump came on and the air was HOT. GARY
__________________
GaryL is offline   Reply With Quote
Old 06-26-2008, 05:37 AM   #5
Administrator in Memoriam
 
Hitchhiker's Avatar


 
Appalachian Campers
Join Date: Jan 2000
Location: Buladean, NC
Posts: 8,127
Interesting, maybe there's a problem with the reversing valve or the associated circuitry that controls it? I'll link this thread to the RV Systems and Appliances forum, maybe some of the techs who watch there will have a suggestion to help.
__________________
'11 GMC Acadia SLT AWD
'11 GMC Sierra 1500 4x4 Extended Cab
Hitchhiker is offline   Reply With Quote
Old 06-26-2008, 09:08 AM   #6
Member
 
dveasey's Avatar
 
Tiffin Owners Club
Workhorse Chassis Owner
Join Date: Aug 2006
Posts: 79
I think that you're confused about the heat pump coming "On".It's not "heating"... It sounds like possible freezing of the coils & the compressor laboring under the strain.You need to visually inspect the rooftop evaporative coils.

See this thread:http://irv2.infopop.cc/eve/forums/a/.../m/10210865541
__________________
2004 Tiffin 34XB,Workhorse.22K,8.1L,Gas
Saturn SL
dveasey is offline   Reply With Quote
Old 06-27-2008, 01:47 AM   #7
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
Gary, we will need some specific info of the heat pump; year, make & model. What position do you have the t'stat set on? Are you able to troubleshoot electrical and electronic circuits with a schematic?
__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 06-30-2008, 03:56 AM   #8
Junior Member
 
Join Date: Aug 2007
Location: redmond or.
Posts: 25
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by RV Wizard:
Gary, we will need some specific info of the heat pump; year, make & model. What position do you have the t'stat set on? Are you able to troubleshoot electrical and electronic circuits with a schematic? </div></BLOCKQUOTE>The air is aDometic mod. 620515. On 2005 Mount. Aire, With a 5 button Duo-Therm Control Center. My elcetrical knowledge is basic. It sounds like freeze up on the coils when it kicks out hot air that lasts for 2-3 min. then the cooling pump comes on and cools for 5 min. then back to heating. I am thinking about taking to RV repair soon.
__________________
GaryL is offline   Reply With Quote
Old 06-30-2008, 03:09 PM   #9
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
GaryL, have you checked the coil and air filter? You could have a short cycling of discharged air back into the return causing a freese up condition if it is not the air filter or dirty coil. Otherwise electrical troubleshooting will need to be done.
__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard is offline   Reply With Quote
Old 06-30-2008, 09:17 PM   #10
Member
 
sparetire's Avatar
 
Join Date: Feb 2007
Posts: 53
Gary,

Here's a possibility:
It could be the built-in (to the A/C unit)resistance heater coming on, overpowering the cold air or coming on and compressor switches off. Even heat pumps have resistance heaters in RV's to supplement the heat pump (A/C system flow just runs in reverse) at temps lower than 35 F degrees. T-stat bad or mis-wired, unit mis-wired, relay stuck, or bad electronic control are a few things that could cause the above problem.
__________________
sparetire is offline   Reply With Quote
Old 07-01-2008, 03:19 AM   #11
Junior Member
 
Join Date: Aug 2007
Location: redmond or.
Posts: 25
Thanks for all the suggestions. I was talking to another camper last nite who had the same problem, it turned out to be a circuit board so, I am taking it to an RV repair shop today. Thanks again. Will let you know what they find.
__________________
GaryL is offline   Reply With Quote
Old 07-01-2008, 07:24 PM   #12
HPH
Member
 
HPH's Avatar
 
Monaco Owners Club
Join Date: Jun 2008
Location: Texas
Posts: 87
Gary,
It sounds like your reversing valve is dropping out. If yours is like mine the reversing valve energizes during the cool mode and defaults to heating mode(heat pump) when there is no call for cooling. You will hear a swooshing noise when the ac shuts down. The T-stat is wired to send a signal to energize the reversing valve solenoid when the unit calls for cooling. Your solenoid coil may be overheating or defective and dropping out causing the unit to run in heat mode no matter what mode the t-stat is set in.
Basically if the Reversing valve does not energize you will get heat only. I'd ck to see if the RV solenoid has pwr. during cool mode and then see after the 5-6 min when it starts to run in HP mode if it's switching over or losing it's signal from the t-stat.
HPH
__________________
2009 Monaco Camelot 42 PDQ

2004 Z71 Tahoe
HPH is offline   Reply With Quote
Old 07-04-2008, 04:25 AM   #13
Junior Member
 
Join Date: Aug 2007
Location: redmond or.
Posts: 25
I took the M/H to an Rv service place, they called Dometic who said it needed a new board, after waiting for new board and install found out that was not the problem. then dometic said it was prob. reversing valve, service said because it required soldering they could not fix it, wanted to install new A/C for 1200 plus, no thanks. I am now searching for a real A/C guy who knows what he is doing to diagnos and fix. I do believe HPH that you are on the right trac and this is where I stand. Thanks for all suggestions again. Gary
__________________
GaryL is offline   Reply With Quote
Old 07-05-2008, 02:35 AM   #14
Community Moderator
 
RV Wizard's Avatar


 
Country Coach Owners Club
Appalachian Campers
Gulf Streamers Club
Join Date: Mar 2000
Location: Chattanooga, Tn.
Posts: 12,062
Gary, if in fact it is the reversing valve, and it does cool properly for a time I would think it is the solenoid on the valve and not the actual mechanical valve. If this is true, you should only have to replace the coil on the valve and removal of refrigerant and replacing valve body would be unneccessary. It certainly would be worth the try first. Good luck and have a great weekend.
__________________

__________________
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7
RV Wizard 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
aircondition problem RV Systems & Appliances 19 12-31-1969 07:00 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:45 AM.


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