AC problem
Roof top coleman AC/heat pump is blowing out hot air instead of cold. Are there a series of troubleshooting procedures that we could use to figure out what needs to be replaced? Unfoturnately neithe...
Forum Discussion
What procedure did you use to determine that it needed freon? Correct charge can be verified by measuring the amp draw of the compressor, so if a "tech" just listened to it and made that diagnosis, Wrong!!
These are sealed systems. There is no place for a leak to occur short of an area of copper tubing rubbing against something on the chassis and rubbing a hole in it. These units only take 24 oz of freon, so with any leak at all, you'll lose all of the charge. If it's actually blowing warm/ hot air and not the trailer ambient temperature air, then charge is OK. You have what sounds like a reversing valve problem, either a sticking reversing valve, a shorted reversing valve solenoid(not common) or a defective circuit board that is keeping it switched in the on condition.
Unplug one of the wires going to the reversing valve and see if it blows cold air.
Emblethen, the "compressor capacitor" which BTW, there are two, does not have anything to do with determining if the unit blows hot or cold air, however, that is almost always a response to any AC problem posted here.
These are sealed systems. There is no place for a leak to occur short of an area of copper tubing rubbing against something on the chassis and rubbing a hole in it. These units only take 24 oz of freon, so with any leak at all, you'll lose all of the charge. If it's actually blowing warm/ hot air and not the trailer ambient temperature air, then charge is OK. You have what sounds like a reversing valve problem, either a sticking reversing valve, a shorted reversing valve solenoid(not common) or a defective circuit board that is keeping it switched in the on condition.
Unplug one of the wires going to the reversing valve and see if it blows cold air.
Emblethen, the "compressor capacitor" which BTW, there are two, does not have anything to do with determining if the unit blows hot or cold air, however, that is almost always a response to any AC problem posted here.
