Haier Portable AC Question - DIY Chatroom

guitarnut · 06-26-2009, 07:55 PM

I have a Haier CPRD12XH7 12,000 BTU AC that I am using in my garage. The fan runs but it doesn't seem to be cooling. It has 2 hoses off the back. One is hot air exhaust and the other is a cool air return for the condenser. Both are vented out the side wall of the garage, each through a 4" dryer vent. The 2 vents are approx. 3 ft apart.

The manual lists the operating temp range at 41F to 95F. Does this mean if the temp is above 95F it won't kick in? It's currently 97F. It's a new unit and when I was venting it under the garage door, it worked fine...it didn't keep up but it was cooling.

Peace,
Mark

guitarnut · 06-26-2009, 08:24 PM

OK, actually, not solved. It runs for a few minutes then the compressor shuts off...just blows warm air. I'm not sure what's going on.

Pics of the setup:

http://www.crenshawweb.com/ac.htm

Peace,
Mark

Yoyizit · 06-26-2009, 10:43 PM

Does it turn off because its reached the setpoint?

JohnH1 · 06-26-2009, 11:41 PM

1st.Try pulling th unit away from the wall the streighten the hoses. they may be to restrictive bunched up like that.
2nd the vent covers on the outside may also be redusing air flow to much they act like a additional elbow and remove the flappers if they have them. most of the units I have seen do not utilize a hood on the outside only a stright pipe with maby a bug screen.

Good luck

guitarnut · 06-27-2009, 01:21 PM

Quote:

Originally Posted by Yoyizit

Does it turn off because its reached the setpoint?

Nope. The shut off point is 78F...the room is around 89F.

Peace,
Mark

guitarnut · 06-27-2009, 01:24 PM

Quote:

Originally Posted by JohnH1

1st.Try pulling th unit away from the wall the streighten the hoses. they may be to restrictive bunched up like that.
2nd the vent covers on the outside may also be redusing air flow to much they act like a additional elbow and remove the flappers if they have them. most of the units I have seen do not utilize a hood on the outside only a stright pipe with maby a bug screen.

Good luck

Hi. Thanks for the suggestions. I have determined that the blower is shutting down, causing the compressor to exceed operating temp, then it shuts down. Haier is sending a tech out to look at it this Wed. I'm thankful they offer on-site for the first year.

Peace,
Mark

Yoyizit · 06-27-2009, 01:29 PM

Quote:

Originally Posted by guitarnut

the blower is shutting down, causing the compressor to exceed operating temp, then it shuts down.

Sounds like an overtemp sensor embedded in the blower motor windings is shutting off, for a good reason or not.

guitarnut · 06-27-2009, 01:57 PM

Quote:

Originally Posted by Yoyizit

Sounds like an overtemp sensor embedded in the blower motor windings is shutting off, for a good reason or not.

Hi. Thanks!

The blower is not coming on at all now. I guess the tech will figure it out.

Peace,
Mark