Patent ID: 11892188
Assignee: TRANE INTERNATIONAL INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G | IPC F

Claim 9:
10. The HVAC system of claim 1, wherein the HVAC system has a system operating mode and zone operating modes each of which is selectable between modes including a heating mode and a cooling mode, and the control circuitry is further configured to at least:
determine a weighted average heating mode error value and a weighted average cooling mode error value for those of the zones in respectively the heating mode and the cooling mode, based on the zone ambient temperature values and the zone temperature setpoints;
determine a switch mode error value from the weighted average heating mode error value and the weighted average cooling mode error value; and
switch or maintain the system operating mode based on the switch mode error value and a switchover error limit.