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7
Error description and error handling
Status
Error
LED
No response from
the SLAVE
No response from
the SLAVE
No response from
the SLAVE
No response from
the SLAVE
CAN bus line
fault
Too many bus
subscribers
CAN bus A
Too many bus
subscribers
CAN bus B
Communication
error CAN bus A
Communication
error CAN bus B
No response from
Hygiene Flush
Box PRO via
CAN-Bus.
No detection of
hot water flushes
at the Hygiene
Flush Box PRO
Possible reason
Bus error
Cable break, incorrect instal-
lation, interference fields.
SLAVE does not have
voltage.
SLAVE with its correspon-
ding serial number no
longer part of the plant
(e.g., after a replacement)
No solenoid valve is
detected on a HS2.
Cable break, incorrect
installation, interference
fields.
More than 31 SLAVEs are
connected to
CAN bus A.
More than 31 SLAVEs are
connected to
CAN bus B.
Cable break, incorrect installa-
tion, interference fields.
Cable break, incorrect installa-
tion, interference fields.
No response / no
identification of the
Hygiene Flush Box PRO in
the CAN-Bus setup.
die Inbetriebnahme an
der Hygienespülung PRO
wurde nicht mit dem
Inbetriebnahme-Assistent
durchgeführt
© www.kemper-group.com – 10.2023 / K410068602008-00 – 169 /265
Measure
Check CAN bus cables and
installation.
Restore SLAVE power supply.
Assign the correct serial
number to the SLAVE or
delete the device from the
system.
Check the correct connection
and fuction of the solenoid
valve. Alternatively, perform
the solenoid valve test
without CAN bus via app
access.
Check CAN bus cables and
installation.
Rewire the BUS subscribers
or change the position of the
MASTER in the bus system.
Rewire the BUS subscribers
or change the position of the
MASTER in the bus system.
Check CAN Bus A cables and
installation.
Check CAN Bus B cables and
installation.
Restart Hygiene Flush Box
PRO (min. one solenoid valve
must be connected)
Commissioning conducted
with the commissioning as-
sistant and correctly allocate
hot water
Effect
Faulty SLAVE does not
function.
Faulty SLAVE does not
function.
Faulty SLAVE does not
function.
HS2 control unit can
not communicate with
MASTER via CAN bus
without connected and
functioning solenoid
valve.
CAN bus and all SLAVEs
do not function.
CAN bus A faulty.
Communication and fun-
ctions can be impaired.
CAN bus B faulty.
Communication and fun-
ctions can be impaired.
Affected SLAVEs do not
function.
Affected SLAVEs do not
function.
Hygiene Flush Box PRO
without function
Error message because hot
water was flushed during
a programmed cold water
flush. Error: temperature
exceeded
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