Received request for AC repair services at a retail clothing store in the Monte Vista Shopping Center in Tulare CA. Complaint was that it felt stuffy on the sales floor. Performed survey and inspection. Found 7.5 ton commercial Trane RTU not calling for cooling due to system is set for 2 stage cool with system economizing and zone sensor has reach it set point at 70°F. Also found T-stat had bad batteries, replace with truck stock. Adjust economizer, single stage cooling connections, verified operations, restored cooling, cycle heating, checked safeties, TR/TD, AMPS on motors, all within limits. System is both heating and cooling properly now.
