is a payne model PA13NR036-J s/n 1212X72694 compatible First Company model USM436AP s/n FC151806215036

Our customer had thePayne unit replace last month and it is not working, the compressor apprears to be defective. My boss thinks the whole condenser should be replaced, but American Home Shield (the owners insurance co.) thinks we should replace the compressor value and evaporator coil, because they will be under warranty.