Homeowner stated Thermostat was showing that the unit was running in heat last night, however, the master bedroom did not heat up to set point over the course of the night. They did notice in the morning that the unit had reached setpoint and seemed to be working as intended. Upon view of the unit I found it turned on when calling for heat, however, it would shut off shortly after. I hooked up my gauges and saw the pressures were low on the low side about 50 to 60 on the low side and around 200 on the high side. Upon closer inspection of the condenser wiring, I noticed that one of the wires to energize the contactor was loose. Upon tightening this connection unit turned on with call for heat and continued to heat. After running the unit for about 30 minutes pressure is normalized and everything to be seem to be working as intended. I then tested the unit and cooling to ensure everything was working as intended and found no issues. Unit in good working order at this time.
