Kohler M340+ User Manual

4-8 Controller Troubleshooting
TP-5672 11/95
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If the emergency source is available, but
the source available emergency LED is not
illuminated, check the trip point settings in
index 7. Are the settings correct?
Does the microprocessor display,
in index 2, rated emergency
source voltages and frequency?
Is the phase sequence
option installed?
Is the phase
sequence in
index 2 A-B-C?
Are the pickup and
dropout settings
correct in index 7?
Is single-phase
sensing used?
Does the voltage between
terminals TB-AC1-EA and
TB-AC1-EC of the power supply
board equal the rated emergency
voltage for the transfer switch?
Is the voltage between pin
P2-19 of plug 2 and terminal
TB-DC1-34 of the power supply
board 1/25 of rated line voltage?
See Appendix B Figure B-5.
Is the voltage between pin P2-20 of
plug 2 and terminal TB-DC1-34 of the
power supply board 1/25 of rated line
voltage? See Appendix B Figure B-5.
Is 3-phase
sensing
used.
Is the voltage between pin P2-21 of
plug 2 and terminals TB-DC1-34 of
the power supply board 1/25 of rated
line voltage? See Appendix B Figure
B-5.
Replace the
logic board.
Calibrate the emergency
source voltage.
Correct the trip point
settings in index 7.
Rewire the source for
a phase sequence of
A-B-C in Index 2.
Correct the setpoints
in Index 7.
Measure the voltage between
terminals TB-AC1-EB and
TB-AC1-EC of the power
supply board; note results.
Check the emergency source
voltage and the wiring harness
from the contactor to power supply
board for open or shorted leads.
Replace the power
supply board.
Replace the power
supply board.
Calibrate the emergency
source voltage.
Replace the power
supply board.
Figure 4-5. Troubleshooting—Source-available, emergency error

Kohler M340+ Specifications

General

Brand	Kohler
Model	M340+
Category	Switch
Language	English