REMEHA Celcia MC4, Installation And User Manual

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3.1.2 Failure signals via the Celcia 20 display
If the regulator is controlled via the Celcia 20, the code of any
failure occurring can be read from the Celcia 20 display. Any
boiler failures are also transmitted.
Failure code Description Check / solution
210
The installation flow temperature is
below 0°C or above 100°C.
Check if the common flow
temperature sensor is properly
connected.
Measure the sensor resistance
value,
see table 04 .
211
No communication between Celcia MC4
and one or more boilers. Check the wiring.
Is one of the boilers off?
212 Boiler is not suited for Celcia MC4 control. Contact Remeha.
213
Outside temperature sensor measuring value no
longer within the limits.
Check the wiring.
Measure the sensor resistance
value,
see table 04 .
Other numbers
See the manual of the Celcia 20, the boiler or of
other connected components.
table 05 Failure signals via the Celcia 20 display

The Celcia 15 regulator can only display failure codes up till
99. In case a higher code occurs, a flashing
f
will be dis-
played.
3.1.3 Failure signals via the failure relay
If a failure occurs or if there is a failure in the power supply to
the Celcia MC4, connect the fault contact between terminals
17 and 19 (with a 1 minute time delay and directly in case of
failure in the power supply). This contact can be used to con-
trol such things as a light, a buzzer or a failure signal.
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