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Hello, if it was a very hot day, and your AC is over 5 years old, it could have tripped its high pressure cut out switch when it went off.. Click here
That is basic maintenance that needs to be done regardless if it is the cause of the current problem.
We can go from there.
The ONLY things that will cause that phenomena are:
1. Dirty condenser coil and compressor over heating on the off cycle and tripping its internal heat sensitive over load.
click here for a photo of that switch buried inside the compressor (90% chance this is the case)
2. Dirty condenser coil causing the high pressure switch to open at roughly the same time the house gets to the set temperature.
Click here for some photo's of the typical high pressure cut out switch.
3. System slightly low on refrigerant, and tripping the low pressure cut out switch (happens on cooler days) 5% chance that is the case here.
.The solution is to clean the condenser. (see previous video link on how to do that)
We can go from here without any time limit until we have a full diagnosis or the the system is repaired.
So far the odds are in the 90% + range that the condenser coils is just dirty.
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