Upon arrival performed maintenance on air conditioning system. Refrigerant levels in range. Filter will be replaced by homeowner he ordered them but did not come in time . Secondary motor control is out of range. Indoor blower wheel is dirty. Dusted off all electrical components. Washed outdoor coils with chemicals, coils were extremely dirty. - Recommend adding booster kit to keep amperages low on compressor start up - Seconary motor control is out of range -Washed outdoor coils - refrigerant levels in range. No safety switch on drain lines. System is operational upon departure.