11-5-25 Classroom W116 has no heat Patrick and I checked out the unit found that the thermostat is failed and installed a new thermostat cycled the system is working at this time. Classroom W125 has no heat. Set the thermostat for heat, we got up on the roof and found the RTU unit was running in both AC and heat. However, the burns were not coming on. First thing I did was check the heating system. I found a spider web in the burner orifice. Remove the the web tested the burner system upon the roof. System is working properly there. We then tested the thermostat by isolating the system from the thermostat and we found that the thermostat is the problem bringing an AC and heat on at the same time. They are gonna pick it up and install new thermostat. For now what I did was I disconnected the Y1 wire at the RTU so the AC does not run once they replace the thermostat they’ll reconnect that wire.