Danfoss Icon Series, Installation Manual, Page: 7 / 102

© Danfoss | FEC | 2020.03
AN29434614196101-000401 | 088N2112 00 | 7
Installation Guide Danfoss Icon™ Master Controller 24V
EN
Operation modes
Cooling (expansion module required).
In order for the cooling mode to be activated the following conditions must be fulfilled.
1. No heat demand must be present for the last 3 or 6 hours depending on setting*.
2. Room temperature must be 2 °C or 4 °C above the room setpoint depending on setting*.
3. Dew point sensor must not be activated (relative humidity must be below 90 %). Only relevant if dew point
sensor is installed.
4. Cooling is only activated when the system is in comfort/home mode. During away mode the system will not
cool in order to save energy.
*only relevant for reference room applications.
Cooling can be deactivated from selected rooms on display room thermostats in ME.7.
Dual Mode – Radiator and floor heating in the same room (floor sensor required).
In applications where both floor heating and radiators are present in the same room it is possible to control
both using only one thermostat if the following conditions are fulfilled:
1. The room thermostat must have a floor sensor installed.
2. Min. 2 outputs have to be assigned to the room thermostat, of which min. one output must be connected to
the radiator. Max. 10/15 outputs can be controlled depending on the master controllers number of outputs.
3. The radiator must be controlled by an actuator connected to the Icon™ Master Controller.
Setup:
Thermostat:
1. In ME.4 on the thermostat select DU and confirm with .
On the Master controller:
1. Press to put the system in Install mode.
2. Select the actuator outputs assigned to the room you are setting up.
3. Select the actuator output that is connected to the radiator, LEDs will lid permanently.
4. Press and toggle to the Fast option.
5. Press , toggle to the RUN option and press OK to finish setup.
During operation the system will maintain room and the min. floor temperature setting using only floor heating.
Only in periods where the floor heating system on its own and with the defined max. floor temperature is insuf-
ficient will the radiator be activated to help achieve the desired room temperature.
Identifying an output from a room thermostat
Using ME.3 on the room thermostat will trigger a Ping message in the Master controllers display and the actua-
tor output(s) the thermostat is assigned to will light up.
Removing units from a Danfoss Icon™ Master Controller 24V system
Removing a thermostat
Note! The Master Controller must be powered on when uninstalling RT.
1. On the thermostat, press and hold and for 3 seconds until the display says (pic. 8).
2. Press . The thermostat is now removed from the system.
Removing an unresponsive Radio module
Find the defective Radio Module and replace it with a new one.
Note! Replacing a Radio Module require a system reset please see section on “Removing a thermostat” and “Reset or
replace a Danfoss Icon™ Master Controller 24V”.
Removing an unresponsive APP module
If an APP module becomes unresponsive simply unplug the module and replace it with a new one.
Uninstalling a defective thermostat
If a unit in the system becomes defective, it might be required to uninstall it from the system.
1. Press to select UNINSTALL mode.
2. Select the output assigned to the unresponsive thermostat on the Master Controller.
3. All LED’s on outputs connected to the unresponsive thermostat will light up and be selected automatically
when a single output is selected. flashes on the display (pic. 9).
4. Press to remove the thermostat from the system.
Reset or replace a Danfoss Icon™ Master Controller 24V
Factory resetting of Danfoss Icon™ Master Controller 24V
Note! Thermostats must be reset seperately. Press and hold and for 5 seconds until display says
and confirm with .
1. On the Danfoss Icon™ Master Controller 24V, press and hold and for 3 seconds until the display says
(pic. 12).
2. Press OK. All settings on Master Controller are reset to factory settings.
Replacing a defective Danfoss Icon™ Master Controller 24V
Note! If possible please note which thermostats and outputs are connected before resetting the system. Use ME.3 on
thermostat to identify outputs.
1. Remove all thermostats and other units from the system by following the procedure for factory resetting.
2. Make a note of how all wires are connected to the Danfoss Icon™ Master Controller 24V.
3. Remove wiring to Danfoss Icon™ Master Controller 24V.
4. Mount the new Danfoss Icon™ Master Controller 24V and reconnect all wires to the same position as on the
replaced Master Controller.
5. Set up system again as described in chapter “Setting up the system”.
Note! Individual room thermostats must be reset locally, see chapter “Removing a thermostat”.