Danfoss C17, Installer'S Manual

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The time shown in the display is one hour off?
See the summer time changeover in line 198, section 32.
The time shown in the display is not correct?
The internal clock may have been reset, if there has been a
power break for more than 12 hours.
Set time and date.
See section 17.
The ECL Card is lost?
Switch the power off and on again to see the
system type and the software generation of the controller.
Order a replacement from your Danfoss representative.
Insert the new ECL Card with the yellow side facing you and
make sure that you copy your personal settings from the
controller to the ECL Card.
See section 34.
The room temperature is too low?
Make sure that the radiator thermostat does not limit the
room temperature.
If you still cannot obtain the desired room temperature by
adjusting the radiator thermostats, the flow temperature
is too low. Increase the desired room temperature (section
3). If this does not help, adjust the heating curve / balance
temperature (section 20).
The room temperature is too high during saving
periods?
Make sure that the max. flow temperature limitation is not
too low. See section 22.
The temperature is unstable?
Check that the flow temperature sensor is correctly
connected and in the right place. Adjust the control
parameters (section 26).
If the controller has a room temperature signal, see section
23.
The controller does not operate and the control
valve is closed?
Check that the flow temperature sensor is measuring the
correct value, see section 1.
Check the influence from other measured temperatures.
Hot points
6a