Arrived to perform repairs. Before moving to remove and replace the reversing valve, tried a suggestion from a Goodman representative. Made adjustments to the txv downstairs and estimated the ammount of adjustment it needed. Went outside and started the heat pump. Found pressures were still skyrocketing, but the system was running longer than it has in the past. Determined that the install technician had over charged the system to achieve its supposed proper charge rating, without adjusting the txv as they should have. Started removing refrigerant until the system was balanced and heating effectively. System will need all the refrigerant removed and the txv set back to the factory position, so that it can be charged back to factory specifications. This can not be done until it is 70 degrees outside and equally warm inside.