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Open Roads Forum  >  Class A Motorhomes  >  General Topics

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CA Traveler

The Western States

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Posted: 11/20/21 05:33pm Link  |  Quote  |  Print  |  Notify Moderator

Repairs not authorized by Tiffin may have the warranty denied ie mobile tech.


2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
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Alex and Tee

Jacksonville , FL

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Posted: 11/20/21 07:00pm Link  |  Quote  |  Print  |  Notify Moderator

No repair was done and the mobile tech was from the dealer I bought it from.

All ductwork in tact.


Alex & Teresa

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Ray,IN

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Posted: 11/20/21 07:28pm Link  |  Quote  |  Print  |  Notify Moderator

Alex and Tee wrote:

Measurements done with a digital thermometer set on house mode. Will invest in some reflective shades for the front window. Front of coach is primarily black so I’m sure that isn’t helping much.

To obtain the best heat shield it should be on the OUTSIDE of the window.


And so, my fellow Americans: ask not what your country can do for you — ask what you can do for your country.John F. Kennedy 20Jan1961

dougrainer

Carrolton, Texas

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Posted: 11/29/21 12:51pm Link  |  Quote  |  Print  |  Notify Moderator

THERE IS NO WAY ANY RV ROOF AC WILL PUT OUT 28.8 DEGREE COLD AIR. PERIOD. The best it will do is around 39 to 40 degrees in lower ambient temps. Besides, IF it could put out lower than 40 degree temps the Freeze thermister would shut the compressor off. There seems to be a BIG problem with how you and this so called tech are using their Temp measurement devices. One thing that will cause a problem is IF the bad AC was replaced. AND they did not install the separating gasket. That would cause the cold air to be pulled back into the AC unit and cause a lack of air volume. It could have happened at Tiffin when it was built, but I have never seen the separator gasket missing from the OEM. Doug

dougrainer

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Posted: 11/30/21 10:45am Link  |  Quote  |  Print  |  Notify Moderator

OK, you should have the RVP Coleman 15k Heat Pump. At 85 degrees outside ambient, the TOTAL amp draw will be 14 amps to 14.3 amps. Hi Fan. Discount the 2.5 amps for fan draw, your compressor should be pulling 12.0 amps. NOT 9 amps. Where did this so called tech measure the amp draw and did you see what kind of amp draw tool he used? At 9 amps, that would indicate a charge problem. But I doubt any of his diagnostics is correct or accurate. I still lean towards the separator gasket missing or not installed correctly. You HAVE to pull the top unit to verify this. Click this link and scroll towards the bottom where he has the AC on its side. That center gasket is the seperator gasket. Doug

https://www.amazon.com/Steele-Rubber-Products-Mounted-Gasket/dp/B07TW7QY16

Alex and Tee

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Posted: 11/30/21 04:27pm Link  |  Quote  |  Print  |  Notify Moderator

I have a more experienced tech scheduled to come out on the 10th. I’ll wait until he gets there and see what his findings are. I have zero confidence in what the other guy did and I told the mobile service manager that as well as whatever he used to measure temps was either no good or horribly out of calibration. At 81 degrees outside temperature this unit struggles to get the coach to 77 degrees. Just runs constantly.

You just can’t find good help these days.

CA Traveler

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Posted: 11/30/21 08:32pm Link  |  Quote  |  Print  |  Notify Moderator

Alex, I'm so happy for you as you're learning how to spell RV.

Cheers

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