Coleman mach 3 ac freezing up
We are having a freeze up problem with the ducted Coleman mach 3 ac unit. The evaporator is clean and the filter is new. We run it on high cold and turn the thermostat down from max cold. This past we...
Forum Discussion
SC camper wrote:
Thanks for the help. We did run it without the filter and it still froze up. The t stat is part of the roof unit and not on the wall. What type of freon is in this unit? R22 like a house? I talked to my local rv shop today and they dont work on ac units, only replace the whole system. If its the same freon as in a house maybe I can get my ac guy to look at the camper ac.
1. IF it is low on Freon/410a, then it has a leak and will lose all its coolant and not cool or freeze. So, you do not have low coolant. They only hold 16 ozs of coolant.
2. Yes, they do NOT (we also) work on the sealed system or coolant as it will cost you more than the upper unit is worth. Regular Home AC people have no clue on how to fix or charge RV AC units.
3. You need it checked out by a Qualified RV AC Technician
4. I believe you have a BAD tstat as I stated previously. Turn the Tstat knob back and forth. You should hear a click as the contac points open and close. DO NOT hear the click, then the tstat is stuck ON causing your freeze up. Doug
