My two do the same thing. My living room one has been cured by buying a new temperature probe and installing it literally sticking out the opposite end of my AC intake.
My AC intake shroud has been modified to make things much quieter so there is no exit slots around the area where the little thermostat sticks its matchlike head out.
No more cycling up front.
The rear does exactly as you mention. Get the outside temp and inside temp close together and the darn thing cycles. Set the temp to 70 and it seemingly never shuts off. Turn it up to 72 and it works better.
I have NOT moved the rear temp sensor pickup. I have chased this frustrating issue for so long that I cannot remember if I experimented with connecting a new one in there.
One thread recently decided it was "electrical noise" causing the problem. They diagnosed it by using a battery at the AC itself to substitute the coach supply.
I surmised that turning off shore power would eliminate any "electrical noise" but my AC still short cycled.
So perhaps instead of "electrical noise", it is a low voltage issue that happens just as the AC cycles on. If that is the case it could be input capacitors on the control board not handling the momentary drop. I have considered adding a capacitor right at the input. Health issues have kept me off the roof for months so my experimenting has been slow.
One thing I want to try is flipping a switch on my control board inside the AC unit. It is the "differential" switch.
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Certified Senior Electronic Technician, Telecommunications Engineer, Telecommunications repair Service Center Owner, Original owner HR 2008
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