-Performed CMA Full Service on one Trane 7.5 ton split heat pump. Cleaned both sides of evaporator coil, flushed drain pan, trap, and drain line, replaced air filters and checked amperages and temperatures. Observed transformer wired for 240v instead of the proper 208v. Corrected as appropriate. Disconnect at rooftop did not properly reset after service. Second reset worked; verified voltage and operation of system. Found no challenges with system at this time. System is 17 yr old refrigerant type R22. Customer should consider replacement of system. Office should provide proposal for replacement so that landlord may plan/budget accordingly.