2014 Sprinter PopTop, ProAir a/c... not cooling

VanGogh · 06-22-2016, 10:02 AM

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

DCHitt · 06-22-2016, 10:47 AM

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.

tlg · 06-22-2016, 02:37 PM

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.

VanGogh · 06-22-2016, 08:06 PM

Quote:

Originally Posted by DCHitt

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.

DCHitt · 06-23-2016, 10:07 AM

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.

VanGogh · 07-15-2016, 06:38 AM

Thanks, going to smb west to fix it. I'll report back after.

Joe Hohner · 07-17-2019, 04:51 PM

I'm having the same problem. Sounds like we have the same unit as yours. Did you get the problem solved?

VanGogh · 07-18-2019, 12:17 AM

We took it to the Fresno SMB factory for a quick, easy repair. It had become disconnected from the factory cab a/c.