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Hello, look on the wiring diagram glued to the inside of the blower access panel for the code read outs so we can tell what code 126 is on that model the easy way.
Tell me please how hot it was outside when the unit quit running, and what the inside air temperature was at the time.
Next turn the thermostat off for 5 minutes, then turn it back on and tell me if the blower and outside unit come on or not.
We can go from there