I have a new Goodman GPH1430 package heat pump. The problem I am having is the fan runs continually in a/c setting once the compressor starts and ends its cycle. I can push the thermostat all the way up and it will stop. I can move the setting back to where I want it and it stays off until the the thermostat warms up and starts up the compressor. The fan will start first like it should and run with the compressor but it should shut off 65 sec after the compressor stops but it does not. It will continue 24/7 unless I push the thermostat back up or turn off the system?