Kohler KSS User Manual

TP-6461 1/0832 Section 2 Controller Troubleshooting
2.8 Events and Faults
The following tables list the faults and alarms that may
be shown on the controller’s display screen or listed in
the event history log. The tables also list the possible
causes for each problem and suggested procedures to
identify and correct the source of the problem.
The event history log also lists transfers and other
normal events not shown in these tables. The event
history log can be saved to an electronic file. Refer to the
transfer switch Operation/Installation Manual for
instructions to save the event log to a file.
Fault or Event Message Possible Cause Check
See
Section
Overfrequency, Underfrequency Frequency settings
Check that the system frequency
setting matches the actual source
frequency (50 or 60 Hz).
2.4
Check the over/underfrequency pickup
and dropout settings. See Section
2.4.2 and the Setup Program Operation
Manual.
2.4
Check that the frequency debounce
setting is long enough to prevent
nuisance faults caused by brief
frequency variations.
2.4
Source availability, stability Check that the source frequency
matches the nominal system frequency
and stays within the range of the pickup
and dropout settings.
3.3.2
2.4
Source connections Check for loose connections.
Check wiring.
W/D
Overvoltage, Undervoltage Voltage settings
Check that the system voltage setting
matches the actual source voltage.
3.3.2
2.4
Check the over/undervoltage pickup
and dropout settings.
2.4
2.4.2
Check that the voltage debounce
setting is long enough to prevent
nuisance faults caused by brief voltage
dips or spikes.
2.4
Source availability, stability Check that the source voltage matches
the nominal system voltage and stays
within the range of the pickup and
dropout settings.
3.3.2
2.4
Source connections Check for loose connections.
Check wiring.
W/D
Calibration error Check the ATS calibration. 4.9
Loss of Phase
Single/three phase setting does
not match source
Check that the controller single/three
phase setting matches the source.
2.4
One phase of the source has
been lost
Check that all phases of the source are
available.
3.3.2
Source connections Check for loose connections.
Source Rotation Error Phase rotation setting (ABC or
BAC) does not match source
Check that the controller phase rotation
setting matches the source phase
rotation (ABC or BAC). Check the
source connections to the transfer
switch and verify that A,B, and C are
connected to the appropriate lugs.
Change the controller phase rotation
setting or rewire the source
connections if necessary.
2.4
Failure to Transfer Transfer switch mechanism
problem
See Section 3.2, Troubleshooting. 3.2

Kohler KSS Specifications

General

Brand	Kohler
Model	KSS
Category	Switch
Language	English