TXV repair/replacement procedures
I just had my 9 year old 2 1/2 ton home Carrier Air Conditioner inspected by a service man. I does not put out hot air in heat mode nor cold air in cool mode. It runs a long time in response to the thermostat. The charge (F22) is good. The units are clean. When checking pressures, the suction is around 60-70 psi. The discharge stays around 70-80 psi. He stated the Sporlan TXV model # EA36YD030 is stuck. The suction line by the valve is cool/cold. The discharge line is barly warm. His quote of $950 is beyond belief. His recommendation was to install a new system at $5K.
How difficult is it to pump down the system, remove the screw cap on the back of the valve, and clean/replace the power component inside? Isn't it just a spring and valve?