To pump down a 2 port mini split that does not have a manifold... what is procedure to pump down refrigerant to the compressor? Is it just like a single port only you drawn down each port to 0 psi separately? Thanks
You’ll start the compressor manually using a “pump down” or manual override button on the board, then close your liquid side service valve. Continue running the compressor until both gauges go to zero or the internal pressure relief opens, then close the suction side valve. Your refrigerant is now in the condenser, or at least as much as will fit.