Barmelyik parancs, ami elter a CS=0-tol, az A CH-t "1" re billenti.
http://otgw.tclcode.com/firmware.html#configuration
CH=state Central Heating - When using external control of the control setpoint (via a CS command with a value other than 0), the gateway sends a CH enable bit in MsgID 0 that is controlled using the CH command. Initially this bit is set to 1. When external control of the control setpoint is disabled (CS=0), the CH enable bit is controlled by the thermostat.
Example: CH=0, CH=1