If the issue of not working is related to the thermostat reseting will not hurt anything. There is a display on the heat pump showing the staus and/or error codes. I woulld suggest to look at the display when it stops working. In example of Waterfurnace: The light MASTER MODE and HEATING should be lit while the display shows the temperature. If the LOCKOUT is lit then the display will show the error code.
We live in a barn (aircraft hanger) converted to a house. 0.7 ac leaky pond.
