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Does the thermostat have any error code showing when this happens? Did you check the incoming AC voltage to see what it was? That would be a good idea here. Did you install this thermostat or is it the OEM model that came in the trailer? Get back to me with this information and I can help you sort this out. All follow ups are included in our fee
You would use a digital multimeter like you can find at most hardware stores for about $20 or so. But, if this comes right back on again with no error codes, then I suspect it may have a bad connection. If a wire is loose, it might do this for any number of times. OR it can be the thermostat or ceiling box has a bad board or one going bad. Erratic performance without an error code is one of the hardest things to track down. A new kit is about $89. The connections are going to be probably crimped wire nuts on the wall side and the ceiling box. That is accessed from under the ceiling grill once you remove it. Give those a try and see if you can see anything suspect. Let me know what you find and we can go from there.
What was the green light?
O.K............just checking. Did all the connections at BOTH the thermostat and ceiling box seem tight? IF SO, then I suspect that this is a problem in either the thermostat board or the ceiling control board or relay. The safest thing would be to buy the kit. The part number is ***** the ceiling box. If the A/C is not a heat pump version, let me know and I can supply a part number.
Yes...........that is the correct kit you need. Easy to install. Keep the old parts or perhaps just change out the thermostat first and see if that corrects this and you have a new spare control box. Please let me know what happens.
Just checking back in to see if you were able to resolve this or do we need to dig deeper into the problem? Have a safe New Year's!