RCS Thermostat


Senior Member
We had a customer using two RCS TR16 Thermostats. Unlike the TR40, these thermostats do not have the HOLD button. The control board for the thermostats at the HVAC unit can hold temperature change schedules. In this case the RCS controller had multiple 66 degree heat setting schedules throughout the day. Somehow the HOLD button got turned off, maybe with ELKRM, and the schedules started running. The M1 would send a heat temperature setting change and a while later it would mysteriously change back to 66 degrees. Being set by the schedule.

His fix was to send a HOLD button ON when he set the temperature from the M1. Setting the HOLD button ON stops the thermostat schedules from running.