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Old 03-28-2021, 02:18 PM   #1
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Dash air repair

Having issues with dash air not blowing very cold, have added freon but still canít get very cold. Air seems to get a bit warmer after engine warms up. Think itís time to see an expert. Any advice on who might be able to service dash air unit?
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Old 03-28-2021, 02:37 PM   #2
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This is an automotive air conditioner with longer hoses to the condenser radiator. Any auto air conditioner shop should be qualified to do repairs/replacements.
I suspect the heater hose shutoff valve is not closing. Feel both hoses coming from the heater core. If the valve is closing the exit hose will not feel hot.
What happens when you set the air conditioner on max? That closes the outside air valve and recirculates inside air.
BTW, adding too much refrigerant is much worse than not enough. Time for a professional to step in and repair it correctly.
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Old 03-28-2021, 03:02 PM   #3
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As mentioned, you can take it to any shop that repairs and services auto a/c but many will not have the room for larger vehicles so look for a shop that services trucks. If you're still in the Tampa area, Butler Truck Service has a good reputation and specializes in air conditioning.

Butler Truck Service Inc. -----> website HERE
4405 East 21st Ave
Tampa 33605

(813) 626-1458
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Old 03-28-2021, 07:17 PM   #4
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Thanks for this... I'm having a similar problem with our 2008 Monaco Knight, and have actually had it blow hot air when the temp dial was all the way to the left in the max cool position. I wish I was in Tampa. I'll see what facility in NE Georgia or upstate SC might available.
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Old 03-28-2021, 07:23 PM   #5
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To read up on what others have experienced browse through these search results for dash air repair.
Those results are from the Google search feature at the top of this page.
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Old 03-28-2021, 07:24 PM   #6
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I think Ray nailed it. Heater shut off valve leaking by. Common issue.

Too much can lead to expensive repairs. Almost like adding too much oil to your engine.
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Old 03-28-2021, 08:01 PM   #7
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X2 with Ray, heater valve could be leaking.
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Old 03-28-2021, 08:05 PM   #8
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Quote:
Originally Posted by pflightnut View Post
Thanks for this... I'm having a similar problem with our 2008 Monaco Knight, and have actually had it blow hot air when the temp dial was all the way to the left in the max cool position. I wish I was in Tampa. I'll see what facility in NE Georgia or upstate SC might available.
If it's not too far from you, consider contacting Alltime Truck & Trailer Repair. They have a stellar reputation in the Greenville area. We had some work done there some years ago from the recommendation of three separate locals in the area and found them to be nice folks and charged very reasonable prices.

Alltime Truck & Trailer Repair -----> website HERE
103 Michael Drive
Greenville SC

(864) 295-6751
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Old 03-29-2021, 06:56 AM   #9
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Quote:
Originally Posted by cmcbride View Post
Having issues with dash air not blowing very cold, have added freon but still canít get very cold. Air seems to get a bit warmer after engine warms up. Think itís time to see an expert. Any advice on who might be able to service dash air unit?
If you are in Tampa, there was a place over by 49th st in Clearwater that was a Evans Tempcon authorized repair shop, which is probably what your AC system is. They work on RV's and trucks . I don't recall the name of the place.
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Old 03-29-2021, 10:33 AM   #10
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Quote:
Originally Posted by cmcbride View Post
Having issues with dash air not blowing very cold, have added freon but still canít get very cold. Air seems to get a bit warmer after engine warms up. Think itís time to see an expert. Any advice on who might be able to service dash air unit?
You don't say what area of the planet you're from. If you would advise on that, you might get suggestions on places or A/C repair facilities that people have dealt with that may, or may not be quality establishment, in or around your area. Good luck.
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Old 03-29-2021, 03:33 PM   #11
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Gave up on mine and just start the Generator and run the rooftop unit.
It works better and the operating cost is slightly less.
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Old 04-18-2021, 08:53 AM   #12
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2008 Monaco Knight... goes into the shop this week for the "not too cool" problem above. Trying to glean info before. If it is the heater core bypass valve, will that involve removal of cabinetry, dash, etc. or just forgot access to generator compartment.?
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Old 04-18-2021, 05:38 PM   #13
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Most install ball valve/s near engine so easier to reach and if you get a hole in 80' of heater hose you can isolate them, so I say go with two. You don't need to make a bypass. You can get valves with hose barbs built on from Amazon order by hose size. Hard to say how hard it is to change your valve or if vacuum control issue , cable ect. but many owners changed them out without a tale of how difficult it was.
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Old 04-18-2021, 07:19 PM   #14
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I said "heater core bypass valve" when i meant heater hose shutoff valve. Does the answer still apply? All I am trying to avoid is having the drawers and dash dismantled...
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