Community Forums

Rodsrv · 08-07-2022, 07:42 PM

Hi
Our 2011 Allegro Open Road 34TGA has suddenly stopped blowing cold air from the front unit ( the back is fine )
The front is blowing “cool” air but not cold ( struggling to get the temp below 79 , even with the back one going)

What was strange was , this morning , it was dripping water off the roof , but the AC was off all night ie it was dripping water as though the AC was on

Any ideas?

**Lt Dan** · 08-07-2022, 08:06 PM

It's possible the evaporator coils froze over and the excess runoff was when they thawed out.

Rodsrv · 08-07-2022, 08:10 PM

Thanks
But that was this morning with the AC off all night
Its now 7pm and its been running all day ( but not blowing cold )

weighit · 08-07-2022, 09:19 PM

In one of my roof a/c units on a travel trailer the unit froze up and did not blow cold and like you dripped water. I took it apart and found it froze up solid. Took almost 3 days to end up clear of ice. You may just have to wait it out? Shut it off and allow it to thaw and it will drip. Once i got it working again I inspected the air chambers and resealed all the areas where the cold and return air could mix. Seemed to fix the problem.

DRM901 · 08-08-2022, 06:53 AM

Are the AC units ducted? If so, the water may not be coming from that unit, but running inside the duct from the rear unit.

I would check your condensation drain lines to see if they are plugged. The duckbill ends have a tendency to catch & plug up the lines. I would blow out the lines with a compressor. Best to go from the unit out. If you go from the duckbill ends, you may find out that a connection inside the AC unit doesn't have a clamp on it - resulting in water dripping inside like you have now. Just a little real time experience.

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jlturner · 08-08-2022, 07:22 AM

Quote:

Originally Posted by DRM901

Are the AC units ducted? If so, the water may not be coming from that unit, but running inside the duct from the rear unit.

I would check your condensation drain lines to see if they are plugged. The duckbill ends have a tendency to catch & plug up the lines. I would blow out the lines with a compressor. Best to go from the unit out. If you go from the duckbill ends, you may find out that a connection inside the AC unit doesn't have a clamp on it - resulting in water dripping inside like you have now. Just a little real time experience.

Sent from my SM-G973U using iRV2 - RV Forum mobile app

What DRM 901 said. We used a hair dryer to thaw out AC condenser out.

Drain tubes were plugged. Also replaced AC condenser pump. Was not pumping condensation and was dripping off ceiling on new coach.