Hi all i am new in this forum so bear with me if i am posting in the wrong section. I want some help regarding a new installation. Basically I have an 8 year old Mitsubishi 22,000 btu ac inverter that unfortunately its inverter board is fault and as you probably know is too expensive to buy as new. I took the board also for repair to an engineer but no luck. I am going to replace the ac with another brand. I am very concerned pls as piping is very difficult to change and was wondering if I can use same piping. Both units the old and the new are with R410A as a refrigerant. I am willing to change the piping if there is need but they are passed underneath a gypsum board and need to take some of the gypsum out but as I said I am willing to take the risk.

Any help and suggestions will be very appreciated. Thanks Gilbert