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Old 11-20-2007, 12:05 PM   #1
RTP
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I have 2007 Itasca Suncruiser acquired 6/1/07 that blows hot air when idling. As soon as the coach is moving , the A/C cools as it should. When I took it to several authorized dealers who contacted Workhorse, the reply was that the auxiliary fans were eliminated and that there are no plans to change the design. That may be fine for Workhorse, but it doesn't help the customer who put out the hard-earned money for the coach. No one at Workhorse will respond to me on this issue. The only thing I got from a rep. at the Winnebago rally in July was to set the control to 'Max Air'. While that helped, it did not alleviate the problem. (it doesn't blow hot air, only slighly warm air). What's a body to do to have Workhorse address this issue??
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Old 11-20-2007, 12:05 PM   #2
RTP
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I have 2007 Itasca Suncruiser acquired 6/1/07 that blows hot air when idling. As soon as the coach is moving , the A/C cools as it should. When I took it to several authorized dealers who contacted Workhorse, the reply was that the auxiliary fans were eliminated and that there are no plans to change the design. That may be fine for Workhorse, but it doesn't help the customer who put out the hard-earned money for the coach. No one at Workhorse will respond to me on this issue. The only thing I got from a rep. at the Winnebago rally in July was to set the control to 'Max Air'. While that helped, it did not alleviate the problem. (it doesn't blow hot air, only slighly warm air). What's a body to do to have Workhorse address this issue??
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Old 11-20-2007, 12:41 PM   #3
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RTP welcome to irv2.
Here is a thread that might explain what is going on: EVANS VALVE

I had the same problem and placed the ball valve


it will keep the hot water from getting into the heater portion of heater/AC Evans unit which was installed by your coach MFG not Workhorse.
Hope it helps to answer your question.
Enjoy the forums and do post often.
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Old 11-20-2007, 12:44 PM   #4
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RTP;

First of all I would like to welcome you to IRV2. You have come to the right place for answers. We have a wealth of information available just for asking. For what it is worth I have the same problem and I have the fans. I know it helps to turn on max air because it recirculates the inside air vs drawing hot air from the front of the engine area in the duct work. I would suggest posting your problem in the Workhorse Chassis Forum. I am sure you will get more answers there.

When I am in slow traffic in hot weather conditions I run the generator and central a/c. The works much better.

Don
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Old 11-20-2007, 06:05 PM   #5
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Take your motorhome in for service work on the dash ac. You are still covered by warrenty. We had the same type of problem this past summer only worse since it was blowing hot air all the time whether we were moving or not. My dealer got it going again and we have been happy with it so far. One thing that really helps is to cool off the whole rv by using the roof air before we take off and then using the dash ac as we travel to maintain a comfortable temp. The dash air by itself will not bring down the temp of a hot motorhome but will maintain a comfortable temperature of a motorhome that has been precooled by the roof air.
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Old 11-20-2007, 06:34 PM   #6
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I had a 04 Workhorse with the warm dash air problem. I bought a kit from a autopart store and recharged the airconditioner. fairly simple operation. It helped a lot. There may also be a problem with the valve that controls the hot water from the engine for the heater.
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Old 11-20-2007, 07:02 PM   #7
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RTP, welcome to iRV2.com. We are glad to have you join us here and we look forward to reading of your adventures and experieinces. Winnebago needs to address this issue as they are the installers of this part of the system. I know because I have been through this many times for my customers. Call Winnebago if you need to, they will get it right. Good luck and keep us posted.
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Old 11-21-2007, 07:25 AM   #8
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RTP's problem appears to be different than the classic one mentioned by 007, Petro, etc. His a/c system cools OK when the RPMs are up, so it is not an Evans heater control valve problem. Adding a shutoff valve seems unlikely to solve RTP's problem.

I gather than Workhorse feels the problem is simply one of low air flow over the a/c radiator when the RPMs are low (idle). And that this is a result of having eliminated the aux electric cooling fans. Maybe so, but that certainly is an unacceptable design if that is the case. I would not jump to that conclusion, though, and a message posted to the Workhorse Chassis forum should gain some insight as to whether other new chassis owners are seeing this same problem.

As RV Wizard suggests, I would take the problem to Winnebago since Workhorse says their part of the system is "working as designed".

If it comes down to it, you could always add an aux electric cooling fan yourself. They aren't expensive or difficult and it would quickly show you whether the lack of an aux fan is the problem or something else is causing it.
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Old 12-04-2007, 08:55 PM   #9
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Thanks for all the suggetions/comments. I also took it to Winnebago in Forest City, IA and they also called Workhorse (got same reply--'that's the way it is'). The Workhorse rep did indicate that they were in communication with Winnebago, which tells me that they are aware of the problem. I know I can spend my dollars to try to fix it, but it seems like Workhorse or Winnebago should 'belly up to the bar' and get it right. I'll continue my quest thru thw warranty channels.

Helpful hint--we put a shower rod/curtain behind the front seats. The engine air only has to cool a small area. It's work well for us the past 5 years.
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Old 12-05-2007, 10:33 AM   #10
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My MH had this problem when I bought it 8 years ago, no one had any suggestions, including Winnebago. After many hours of testing with laboratory thermometers I diagnosed the problem as heat from in front of the radiator being sucked into the fresh air intake of the A/C box. The only way to stop it is to put the switch in the Max A/C position, doing that closes the electrically operated fresh air damper in the intake. The only time I have that problem now is when I forget to change the switch position when slowing down! Now, if I can figure out a way to do it automatically I won't have to admit to my wife that I am getting senile.....Maybe a "flag" switch or a "petot tube"!!!!!
By the way, Winne has known this since I called them in the Spring of '00, maybe they just need some more time.
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