Handling Faults - Siemens RDF301 Basic Documentation

Temperature out
of range
Fault "Er1" on display
Fault "Er2" on display
Fault "Er3" on display
Power failure
Siemens
Building Technologies
3.10

Handling faults

When the room temperature is outside the measuring range, i.e. above 49 °C or When the room temperature is outside the measuring range, i.e. above 49 When the room temperature is outside the measuring range, i.e. above 49
below 0 °C, the temperature value will blink at the limit values below 0 °C, the
°C". After the temperature returns to within the measuring range ter the temperature returns to within the measuring range ter the temperature returns to within the measuring range, the thermostat will
continue to work. continue to work.
For heating application, the heating output will be turned on when the temperature For heating application, t
drops below the drops below the limit value, provided the Protection mode setpoint is not set to O
The cooling output in cooling applications will be turned off when the temperature The cooling output in cooling applications will be turned off when the temperature The cooling output in cooling applications will be turned off when the temperature
exceeds the limit value, provided the Protection mode setpoint is not set to Off. exceeds the limit value,
No output is activated if protection mode setpoint is set to No output is activated if protection mode setpoint is set to Off.
When the built When the built-in sensor fails and no external sensor is connected, the thermostat in sensor fails and no external sensor is connected, the thermostat
shows the fault message "Er1" on the display. The thermostat needs to be shows the fault message "Er1" on the display. The
replace replaced.
When the internal When the internal non-volatile memory has error, e.g. unable to read or write
thermostat shows the fault message "Er2" on the display. thermostat shows the fault message "Er2" on the display. thermostat shows the fault message "Er2" on the display. If it is only data corruption
in the memory, a master reset can fix this error. Otherwise, in the memory, a master re
defective and need to be replaced. defective
When the external sensor is selected for floor temperature limitation When the external sensor is
and is not working properly, e.g. faulty or sensor is missing, the thermostat shows and is not working properly, e.g. faulty or sensor is missing, the thermostat show and is not working properly, e.g. faulty or sensor is missing, the thermostat show
the fault message "Er3" on the display. the fault message "Er
The heating output turns off immediately to ensure safety The heating output
the floor the floor. The room temperature measured by internal senso
shown on the LCD display. shown on
Note:
1) Er1 has a higher display priority than Er2. 1) Er1 has a higher display priority than Er2.
2) Once the external sensor fault is removed, the thermostat 2) Once the sensor fault is removed, the thermostat returns to normal
working working mode.
For fault For fault status messages on the bus, see section 3.11.8
In the event of a power failure, all working conditions (operating mode, setpoint, fan In the event of a power failure, all working conditions (operating mode, setpoint, fan In the event of a power failure, all working conditions (operating mode, setpoint, fan
stage, all control parameter settings) are stored without time limitation. stage, all control parameter settings) are stored without time limitation. stage, all control parameter settings) are stored without time limitation.
When power returns, the thermostat reloads this data and continues to work in the When power returns, the thermostat reloads this data and continues to work in the When power returns, the thermostat reloads this data and continues to work in the
same conditions as before. same conditions as before.
RDF301, RDF301.50..., RDF600KN RDF301, RDF301.50..., RDF600KN, RDF600KN/S
he heating output will be turned on when the temperature
the Protection mode setpoint is not set to Off.
the Protection mode setpoint is not set to Off.
has error, e.g. unable to read or write, the
set can fix this error. Otherwise, the thermostat is
selected for floor temperature limitation (P51 ≠ OFF)
off immediately to ensure safety and avoid overheating of
ternal sensor continues to be
Basic Documentation
values, i.e. "0 °C" or "49
thermostat needs to be
3.11.8.
ocumentation
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CE1P3171en
2017-12-07