Quote:
Originally Posted by Bill
Paul -
You confused me a bit by saying Did you mean that the compressor turned off, and would not turn on? (Which would be normal if it is cold in the room.) Or the compressor came on and would not turn off? (Probably what you meant.) For a number of simple reasons (really wet weather, clogged louvers or filters, misdirected airflow baffles - see the AIRXCEL site), it occasionally happens that the cooling coil freezes over completely with ice. And then the unit does weird things. Since air cannot circulate, the coil's temperature sensor (not the same as the thermostat) may not know how cold or warm it is, and it thinks that the compressor should stay on. And ice formation could be aggravated by water thrashing around from an overflowing condensate drain pan. The solution is simply to turn the whole thing off and let it thaw out completely, and make sure the drip pan drains are clear. Waiting a week will probably have it running right again since the cooling coil will have thawed and the drain pan at least partially drained - but replacing the thermostat may have nothing to to do with it.
Good luck.
Bill
|
If the unit were iced up, the temperature would not get colder in the room because the ice would block the air flow. In fact, it would get warm in the room with the compressor still running and no air coming out of the outlets. The OP stated,
"I noticed the trailer was getting colder and colder, and the compressor would not cycle regardless of the temp setting.".
That is not a symptom of icing......that could
only be caused by the compressor not getting turned off by the thermostat or something amiss in the circuit board or wiring, associated with the thermostat.
It may even be worth while to pull the thermostat off to see if the wires going to the thermostat are somehow crossed or short circuited. However, my $ is on a bad thermostat. It's a fairly common problem.
Quote:
Originally Posted by Bob&Karen
I would concur with the thermostat failing. We just had the opposite problem while on the road - our compressor would not start. Finally tracked down a start capacitor in Minnesota just outside Minneapolis, replaced it, and all is good.
Regards,
Bob
|
That's exactly right. The capacitor is a sort of "battery" (if you will). It accepts a charge that is able to "Boost" the current going to the compressor to assist in start-up. If the capacitor is bad, the compressor won't start. If the capacitor is weak, it may start the compressor the 1st time, when you 1st turn the AC on but it may not start it again after the first "off" cycle because that takes more power.
When the compressor cycles off, the capacitor builds up a charge to assist with the next start-up phase of the "cycle".
Linear Mode
