Tech was informed maintenance company would run cool mode and system would cut off but heat would run fine. Technician did find straight ac system on roof and ohmed out contactor and compressor are within specs. Technician can not get to a/h due to being 14-16ft up high will require a 12ft ladder to access a/h. System is heat at this time. Technician found system for thermostat is new system we installed. Technician found short on y circuit going through the roof. Technician fixed short and tested system. System is operating properly at this time. Technician did have to reset tcs module to have them communicate with thermostats. Spoke before I left they have connections and are in control on thermostats.