TESTED SYSTEM NOT COOLING FOR WHOLE HOME. FOUND UNIT IS FROZEN DUE TO FAILED DAMPER MOTOR TO UPSTAIRS ZONE. FILTER ALSO VERY DIRTY & SYSTEM LACKING FLOOD PROTECTIONS. BOTH CAPACITORS TO COND. & BLOWER ARE FAILING. COND. COIL IS VERY DIRTY, CONTACTOR PITTED. SYSTEM CAN BENEFIT FROM ADDING SMART BYPASS & HARD START KIT.