Air conditioner not cooling

CamperWill wrote:

dougrainer wrote:
Then it should be cooling. Doug

It's great that it should be, but I wouldn't be writing this post if it was :)

I need to know the exact ambient temp. The AMP draw of the compressor AFTER running a minimum of 15 minutes. Not a guess, but the exact amp draw and the exact ambient temp. Your previous post with a "guess" indicates a low charge, which means a very slow leak. Doug

dougrainer wrote:
Then it should be cooling. Doug

It's great that it should be, but I wouldn't be writing this post if it was :)

CamperWill wrote:

dougrainer wrote:
Where and WHICH wire(color) are you reading the amp draw? If you are reading the COMPLETE (Fan and Compressor) amp draw, that puts the compressor amp draw at 7.5 amps which indicates either a low charge or defective compressor. Either way you will have to replace the upper unit. Doug

The readings excluded the fan draw since I measured the purple and yellow wire in the ceiling assembly that goes to the roof unit. The yellow wire goes to the run capacitor and the purple goes to the compressor according to the wiring diagram. Both wires had the same amp load.

Then it should be cooling. Doug

dougrainer wrote:
Where and WHICH wire(color) are you reading the amp draw? If you are reading the COMPLETE (Fan and Compressor) amp draw, that puts the compressor amp draw at 7.5 amps which indicates either a low charge or defective compressor. Either way you will have to replace the upper unit. Doug

The readings excluded the fan draw since I measured the purple and yellow wire in the ceiling assembly that goes to the roof unit. The yellow wire goes to the run capacitor and the purple goes to the compressor according to the wiring diagram. Both wires had the same amp load.

CamperWill wrote:

dougrainer wrote:
At 95 degrees the compressor will pull 11.6 amps. At 85 degrees 10.6 amps and at 75 degrees 9.6 amps. If the compressor is at these amp draws, the unit is fully charged. Doug

How are you checking the amp draw? What type of meter?

Those amp ratings are slightly higher then what I was seeing, at 85-90 degrees I think I saw 9.8 amps or so. It was measured with a clamp meter.

Where and WHICH wire(color) are you reading the amp draw? If you are reading the COMPLETE (Fan and Compressor) amp draw, that puts the compressor amp draw at 7.5 amps which indicates either a low charge or defective compressor. Either way you will have to replace the upper unit. Doug

j-d wrote:
Your opening statement says "quit working" but (fortunately!) your details indicate it's at least running, and Doug's reply confirms your "feel test" saying it's properly charged.

So... If you have cleaned Filter, Condenser and dismantled the front sheet metal to clean the Evaporator, I think it merits this question"

Is this a Ducted Sytem? Starting to seem to me that something's out of place in the ducting or the area the A/C's installed in.

If it IS Ducted, is the Freeze Sensor in the correct position? I don't think being misplaced will cause it to not try to cool, but it can lead to evaporator freezing with condensation. That'll stop the cooling.

It is not a ducted system.

Your opening statement says "quit working" but (fortunately!) your details indicate it's at least running, and Doug's reply confirms your "feel test" saying it's properly charged.

So... If you have cleaned Filter, Condenser and dismantled the front sheet metal to clean the Evaporator, I think it merits this question"

Is this a Ducted Sytem? Starting to seem to me that something's out of place in the ducting or the area the A/C's installed in.

If it IS Ducted, is the Freeze Sensor in the correct position? I don't think being misplaced will cause it to not try to cool, but it can lead to evaporator freezing with condensation. That'll stop the cooling.

dougrainer wrote:
At 95 degrees the compressor will pull 11.6 amps. At 85 degrees 10.6 amps and at 75 degrees 9.6 amps. If the compressor is at these amp draws, the unit is fully charged. Doug

How are you checking the amp draw? What type of meter?

Those amp ratings are slightly higher then what I was seeing, at 85-90 degrees I think I saw 9.8 amps or so. It was measured with a clamp meter.

At 95 degrees the compressor will pull 11.6 amps. At 85 degrees 10.6 amps and at 75 degrees 9.6 amps. If the compressor is at these amp draws, the unit is fully charged. Doug

How are you checking the amp draw? What type of meter?

If your out of freon consider a new air conditioner. Yes - you can hire someone to install ports and patch the leaks but in some areas that can be a significant portion of what a new air conditioner would cost. Ports and patches tend to be temporary solutions and many who op for that solution have to add freon on regular basis. Just another opinion.