Tech came out and all he did to test was unplug the cut off switch, place it back and the motor starts running again fixes the issue
About a week later (today), the same thing happened, motor in air handler stops running so coils start to freeze, I unplugged-replugged and everything is good.
Could you expound on those statements? What cut off switch are you referring to?
I've got a wi-fi honeywell thermostat (the cheapest one without any crazy features) and I'm inclined to start thinking that could be the issue?
Right now I would tend to disagree.
Assuming that by "cut off switch" you are referring to the safety switch that cuts off power when you remove a cover, I would suspect a faulty switch or a faulty connection to the switch.
Next time a failure occurs, remove the cover and press the switch with out touching anything else. If blower motor starts, that would confirm my suspicion and it is probably a defective switch.
Purchase a voltage sensor. If blower motor does not restart, test for voltage both going to the switch, and leaving switch to motor. Try not to move any wires around. If you have voltage to the switch but not leaving the switch, begin moving wires close to the switch around. If voltage returns you probably have faulty connection to switch.
Let us know what you find.