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Old 06-22-2016, 10:02 AM   #1
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2014 Sprinter PopTop, ProAir a/c... not cooling

Hello SMB Forum community,
This is my FIRST 'toe in the water' post...
I am befuddled as to why my rear ProAir a/c-heater is not cooling. The dash MB factory unit is fine. I can't find a single thing about this unit in my SBM manual and am not getting calls returned by SMB Fresno. Before I head off to a generic RV repair shop, I thought I'd check to see if any of you have had a similar failure. Could it be a fuse issue? Thinking likely not since the fan runs.
And if I'm posting this in the 'wrong' spot... please enlighten me.
Thanks, Roxanne & Tom aka VanGogh
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Old 06-22-2016, 10:47 AM   #2
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If the fan is running I guess you have power. Can you hear the compressor start? The compressor is probably under control of a thermostat? What is it set at?
I guess we need some more information.
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Old 06-22-2016, 02:37 PM   #3
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Garage
Do you have a Danhard A/C? On our Danhard the blower will run without the inverter being turned on. To power the Danhard's compressor you need to turn the inverter on. There is also a built in 5 min delay (with the Danhard) before the compressor starts.
Sportsmobile Custom Camper Vans - Sprinter Heating & Cooling
Hope this helps.
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Old 06-22-2016, 08:06 PM   #4
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Quote:
Originally Posted by DCHitt View Post
If the fan is running I guess you have power. Can you hear the compressor start? The compressor is probably under control of a thermostat? What is it set at?
I guess we need some more information.
I don't hear the compressor start. Isn't heating or cooling. There is a thermostat and I've played with that but still nothing. This is a 12V proair unit for the rear seating area while on the road. Thanks for your suggestions.
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Old 06-23-2016, 10:07 AM   #5
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From what I see on the internet "ProAir" is an evaporator unit only. So it probably has just a 12 volt fan and a freon line from the front compressor. The back will only cool when the front AC is running. Maybe the thermostat controls just the fan of the rear unit?

I have a similar arrangement.
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Old 07-15-2016, 06:38 AM   #6
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Thanks, going to smb west to fix it. I'll report back after.
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Old 07-17-2019, 04:51 PM   #7
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Did You Find a Solution?

I'm having the same problem. Sounds like we have the same unit as yours. Did you get the problem solved?
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Old 07-18-2019, 12:17 AM   #8
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We took it to the Fresno SMB factory for a quick, easy repair. It had become disconnected from the factory cab a/c.
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