Running A/C on Low

Dynalmadman wrote:
Hi guys,

Wife and I are pretty new to RVing, just bought our 5th wheel a couple weeks ago and are loving it so far.

When we bought it, our salesman and the tech that gave us our walk thru instructed us to not run the A/C on lo fan because there was a greater chance of freezing up the unit. Lo was fine for heating but not cooling. A/C must be run on Hi.

Now we have 2 units, one in the main living area and another in the bedroom. They are pretty loud and wake us up every time it cycles on during sleep.

Finally, my question. Is this true? Are we risking a freeze up if we run the bedroom A/C on low? Didn't want to try it until I get some wisdom from you fine folks.

Thanks.
Michael

Same circumstances for us. My wife is awakened every time the bedroom A/C fan kicks on at night. With two A/C units sharing common ducts, our 'fix' is to make sure the bedroom is cooled down before we head to bed, and then run the living room AC on constant low fan with the thermostat set to 72 degrees. We then close most of the ceiling vents other than those in the bedroom, with result that we have a healthy amount of cool air circulating there all night. As the fan is in the living room and is not cycling on and off, it becomes unobtrusive 'white noise'. This has worked for us for the past couple of years with no freeze-ups. Having said this, there might be a freeze problem if attempting this in the heat of the day.