8 Operational faults
A sensor failure is indicated by the blinking icon on the display. In addition, the display
is illuminated for 1 second in intervals of 10 seconds when a sensor malfunction persists. The
“Error“ message is displayed immediately. Press the rotary pushbutton to open the error
level. It may be possible to view several error messages by turning the rotary pushbutton. As
long as an error message is present, the error level is displayed, even though it has not been
opened by pressing the rotary pushbutton. In the error level, the error message is displayed
as specified in the list below.
Note: After the system code number has been changed or after restarting the controller, any
error messages are suppressed for approx. 3 minutes.
8.1 Error list
4
Err 1 = Sensor failure (–> section 8.2)
4
Err 2 = Reserved
4
Err 3 = Disinfection temperature not reached (–> section 6.10)
4
Err 4 = Max. charging temperature reached (–> section 6.2)
4
Err 5 = Error messages issued by the device bus (–> section 7.12.6)
4
Err 6 = Temperature monitoring alarm (–> section 8.3)
4
Err 7 = Unauthorized access occurred (–> section 9.1)
4
Err 8 = Error message of a binary input
4
Err 9 = Error in meter bus communication
4
Err10 = Error reported by heat meter
All error messages, except for “Err 1” and “Err 8” can be confirmed in the error level. When
an error message is indicated, proceed as follows:
q
Select
Clr
on the display.
Confirm the error message.
Note: By confirming the “Err 5”, all other error messages from the device bus that are no
longer relevant are deleted. These types of error messages can originate, for example, from
device bus participants which were temporarily out of order or have been sent from devices
which in the meantime have been replaced by devices with different device bus addresses.
EB 5579 EN 113
Operational faults
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