ENG
INSTALLATION MANUAL
28
DD2+ malfunctions
Room unit automatically detects eventual malfunctions and
signalises them on the display. These errors are: Er1, Er2, Er3
and Er4.
- temperature sensor malfunction
If the display writes out (Picture 22), it means built-in tem-
perature sensor is in malfunction. Send room unit to the nearest
authorised service or dealer.
Picture 22
- malfunction of one or more sensors, connected to
the controller
If the display writes out (Picture 23), it means one or more
temperature sensors, connected to the heating controller is in
malfunction. Check the resistance and connection of the sensors,
to eliminate the malfunction.
DD2+ signalises error also when DD2+ isn’t synchronised
with the controller (refer to the chapter Room unit synchronisa-
tion, on page 25).*
i
* Synchronisation is not required by WDC and CMP25-2 controllers.
To Next Page
Loading...
