Any HVAC experts?

[Seriak]

Originally Posted by cwatkins

I don't think the fan on the outdoor A/C condensing unit should be running...

If it's running, it probably means the compressor is running as well, which means your A/C is effectively ON.

That is what I thought, but when I went to the registers it was blowing warm air not cold air and the thermostat was set to off. As soon as I turned off the air exchanger the fan stopped turning on the a/c unit. Since then I have had the a/c on and it blows cold air just fine. I am at a loss. Maybe I will go turn the thermostat to heat and see if the air exchanger still turns on the a/c unit.

[Delphinus]

That seems really weird to me - can you call the place that did the installation?

[Seriak]

Originally Posted by Delphinus

That seems really weird to me - can you call the place that did the installation?

Unfortunately, they were not that great to deal with in the first place and it was so many years ago they wouldn't do it for free now. I just talked to an electrician friend and he suggested that if everything else works fine, he would just turn off the breaker for the air conditioner in the winter and not worry about it although it did sound to him as if they wired something wrong.

[subman]

I had something like this in my last house. When we turned on the circulating fan the AC compressor would start. I was told it had to do with the relays for the fans and they would need to be changed. I never did, I just tuned the breaker of for the AC off.

[hillegom]

The fan on the ac unit is turning. But is it turning because the motor is on, or is the fan turning because the air is being pulled through the duct to replace the air that the air exchanger is pushing to outside?

[Seriak]

Originally Posted by hillegom

The fan on the ac unit is turning. But is it turning because the motor is on, or is the fan turning because the air is being pulled through the duct to replace the air that the air exchanger is pushing to outside?

I would say most definitely the motor is on as you can hear it going from quite a distance. I will test that theory when I turn off the breaker tonight.

[rayjay]

I'm not real clear on this yet. Is the AC fan turning the one in the outdoor unit?
I've not seen an AC motor inside.
If it is the outdoor unit, is it just the fan coming on or is it the fan and the compressor?

[StirCrazy]

Originally Posted by hillegom

The fan on the ac unit is turning. But is it turning because the motor is on, or is the fan turning because the air is being pulled through the duct to replace the air that the air exchanger is pushing to outside?

there is no conection between the outside AC fan motor and an air duct, the outside AC fan is just to cool the condensing unit.

I would get a real HRV guy and bite the bullet for a few bucks and get it fixed properly. this should not be comming on and a AC unit fan is not a cheep one to run. Also you are using the aire exchange in the summer that fan will be running twice as much and I imagin replacing that fan will be a lot more expensive than getting the aire exchange hooked up properly.

Steve

[hillegom]

Originally Posted by StirCrazy

there is no conection between the outside AC fan motor and an air duct, the outside AC fan is just to cool the condensing unit.

Steve

I didn't know we were talking about the outside fan motor. I thought the fan was on the inside of the house, blowing through the evaproator

[ILIKECOUGARS]

Originally Posted by Seriak

I just talked to an electrician friend and he suggested that if everything else works fine, he would just turn off the breaker for the air conditioner in the winter and not worry about it although it did sound to him as if they wired something wrong.

Why don't you ask your electrican friend to install a relay for you?

I alway turn off the breaker to the ac in the winter.