Room Temperature Operation Mode

This function allows you to set the initial setpoint temperature, the upper and lower value of the dead zone and switch operating modes. If this function remains deactivated, you can only set the initial setpoint temperature and dead zone values (this only applies to Heating and/or Cooling with Automatic changeover).

FCU controller	Operation mode	Enable
FCU controller	Controller status after download	Standby/Comfort/Economy mode
	Controller status after power on	As before voltage failure/1 of 4 modes
	Extended comfort mode	0 – 255 min
	1 bit object function for operation mode	Disable/Enable
	1 bit object function for standby mode	Disable/Enable

Extended Comfort mode:

You can temporarily extend the Comfort mode by 1 to 255 minutes using the timer.

If you set the timer to zero, this function remains inactive.

The comfort extension operation mode is largely the same as the comfort mode. However, the comfort extension is exited automatically after a time period that you can set. It temporarily suppresses the night operation mode when the room is used for longer during the evening, for example.

If you set the thermostat to Economy mode and extend Comfort mode, after the temporary timer expires, the thermostat returns to Economy mode. The temporary timer function is aborted whenever a new setting is made via the bus or via the operation mode button.

The user may want to interrupt the timer of the extended Comfort mode and switch to another mode or simply switch between the individual modes as needed. To enable it, you need a 1-bit object and a 1-bit status feedback object for each operating mode.

1-bit Object Function for Operation Mode

When you enable the 1-bit object function for operation mode, in addition to the two existing 1-byte objects (Operation mode and Operation mode status), you get another six 1-bit objects (3 for operation modes and 3 for status feedback).

The 1-bit objects works like this:

Setting "1" to any of the four 1-bit objects, the corresponding control mode is activated. The "0" has no function.

1-bit Object Function for Standby Mode

If you tick the 1-bit object for Standby mode, you get two more 1-bit objects (Standby mode and Standby mode status) and you can send only the ‘1’ signal via the Standby object to activate the Standby mode.

If you do not tick this function, you need to send ‘0’ signal to all the three objects (Comfort mode, Economy mode and Frost/heat protection mode) to activate the Standby mode.