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Old 07-29-2019, 02:28 PM   #1
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ProMaster cab air conditioner not cooling

All of a sudden my Dynamax REV cab air conditioner is not cooling.

I noticed a couple of weeks ago that the outside ambient temperature display was reading much lower than actual temperature.

This morning the dash display gave me an icy road warning while it was 87 outside. This afternoon the temp display does not work and the A/C is not working.

I am wondering if they are connected.
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2017 Dynamax REV 24RB
2018 Ford F-150

Formerly a 2013 Sunseeker 2250 SLEC.
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Old 07-30-2019, 03:12 PM   #2
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Quote:
Originally Posted by Delco Bobby View Post
All of a sudden my Dynamax REV cab air conditioner is not cooling.

I noticed a couple of weeks ago that the outside ambient temperature display was reading much lower than actual temperature.

This morning the dash display gave me an icy road warning while it was 87 outside. This afternoon the temp display does not work and the A/C is not working.

I am wondering if they are connected.
UPDATE: this morning the outside temperature was displayed on the dash, 167 degrees. Actual outside temp was 87. A/C worked normally for a few minutes. Then dash display turned into a dashed line and no cold air.

During the ride to the Dodge dealer the temperature dash display was intermittent. When it showed a temperature I had cold air blowing, when no temp, no cold air.

So the outside temperature sensor in the outside driver's mirror is somehow connected to the air conditioning system!

At least I know that the compressor is good.
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2017 Dynamax REV 24RB
2018 Ford F-150

Formerly a 2013 Sunseeker 2250 SLEC.
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Old 08-02-2019, 02:08 PM   #3
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See thread, “What is this thingy on the mirror.”
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2017 Dynamax REV 24RB
2018 Ford F-150

Formerly a 2013 Sunseeker 2250 SLEC.
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