Kemper KHS Mini System Control Installation And Operating Instructions Manual page 83

Status
Error
LED
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
Table 9.2: Description of warnings / notices
Status
Error
LED
Operating cycles exceed
10,000
Limit thermal disinfection
exceeded
Limit set-point max.
exceeded
Limit set-point min.
undercut
Frost protection limit
undercut
Set-point OK
Control in standby
Flushing is running
Control unit is disabled
Manual KHS Mini System Control
Error description / Error handling
Potential cause
Bus error
Cable break, false installation,
interference fields
SLAVE does not have voltage
SLAVE with its corresponding serial
number no longer part of the plant
(e.g., after a replacement)
Cable break, false 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, false installation,
interference fields
Cable break, false installation,
interference fields
Description of warnings / notices
Potential cause
Warnings
The VAV on the defective SLAVE has
performed more than 10,000 operating
cycles
The monitored temperature has
exceeded the set limit value
The monitored temperature has
exceeded the set limit value
The monitored temperature has
undercut the set limit value
The monitored temperature has
undercut the set limit value
Notes
Notice that the monitored temperature
is in the target range
No flushing pending. Control in standby
The valve on the involved control is
flushing / is open
System control is installed correctly,
however not activated
80
Measures
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 CAN bus cables CAN-BUS and all SLAVEs do
and installation
Rewire or the BUS
subscribers or change the Communication and functions
position of the MASTER in
the bus system.
Rewire or the BUS
subscribers or change the Communication and functions
position of the MASTER in
the bus system.
Check CAN Bus A cables
and installation
Check CAN Bus B cables
and installation
Measures
Replace VAV bonnet in The warning message cannot
accordance with the
maintenance manual and continues to operate normally
reset the operating cycles
Check to see if it needs to Entry in journal and optional
be set otherwise
Check to see if it needs to Entry in journal and optional
be set otherwise
Check to see if it needs to Entry in journal and optional
be set otherwise
Prevent danger of valves Entry in journal and optional
freezing up
No action needed! Entry in journal and optional
No action needed!
No action needed!
Activate system control
Impact
Faulty SLAVE does not
function
Faulty SLAVE does not
function
Faulty SLAVE does not
function
not function.
CAN-BUS A faulty.
can be impaired.
CAN-BUS B faulty.
can be impaired.
Affected SLAVEs do not
function
Affected SLAVEs do not
function
Impact
be confirmed. SLAVE
message via email
message via email
message via email
message via email.
message via email
No influence
Entry in journal
No influence