Er12 Actuator defective.
The defective actuator output is
ashing.
Replace actuator.
Er14 A Danfoss Icon™ Master Controller
cannot be included as (become)
a Slave Controller because one or
more room thermostats, repeaters
or Danfoss Icon™ Master Controller
24V have already been included.
This Danfoss Icon™ Master Controller 24V has to
be factory reset to become a Slave Controller. (See
description in chapter ”Reset or replace a Danfoss
Icon™ Master Controller).
Er16: This application requires a specic
actuator output to be available.
You have already assigned this output to a
room thermostat, or the output has not yet had
an actuator tted. Please remove output from
thermostat, it must be available to the application
chosen (or t actuator - if this was not yet done)
Er17: External PT1000 sensor not tted,
or defective.
Check sensor and replace if necessary.
Hydraulic balance
When using the Danfoss Icon™ Master Controller
24V with PWM+ regulation, the system will auto-
matically balance the circuits.
In heating systems with extreme dierences in cir-
cuit lengths, the automatic balancing might not be
adequate.
In these cases the Danfoss Icon™ Master Controller
24V can help you determine which circuits that are
struggling to get enough ow:
1. Press to select RUN mode.
2. Press an button to see the average duty cycle
in percentage for the selected circuit.
OK
When pressing the output button the average duty
cycle is shown in the display of the Danfoss Icon™
Master Controller 24V.
The duty cycle is shown as the amount of time in
% that the actuator is open during active heating
periods and only when in heating mode as an av-
erage over time.
This feature can help determine if one or more
rooms have diculty receiving enough ow or ef-
fect to reach optimal comfort.
The room with the highest duty cycles is the one
that calls for the highest ow. If this room has prob-
lems reaching the desired room setpoint temper-
ature, the following steps can help give this room
more ow/heating capacity:
1. Increase the ow for the room with the high-
est duty cycle, using the pre-setting valve
on the manifold -> set to maximum ow on
pre-setting valves for this room’s outputs.
2. If the room with the highest duty cycle is al-
ready at maximum ow, instead reduce the
ow for the outputs that show the lowest duty
cycle (these do not need as much ow).
3. If none of the above is enough to reach the
desired room temperature, increase the total
ow, by setting a higher ow on the circula-
tion pump.
4. As a last resort increase the supply tempera-
ture into the system.
Note! By installing an Expansion Module in the
Danfoss Icon™ Master Controller 24V the system
will be able to automatically adjust the supply
temperature according to heat demand in the rooms.
VIMCG30F | 088N3678 | 11
© Danfoss | FEC | 2019.02
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