Kohler APM402 Operation page 48

Fuel Tank Leak (diesel-powered models only). The fault lamp illuminates yellow and the alarm horn sounds when the fuel
tank signals a leak of the inner tank. This fault requires an optional fuel tank leak switch for the lamp to function. The local display
shows Fuel Leak Warning.
Ground Fault. The fault lamp illuminates yellow and the alarm horn sounds when a user-supplied ground fault detector signals
the controller. The local display shows Ground Fault Warning.
High Battery Voltage. The fault lamp illuminates yellow and the alarm horn sounds when the battery voltage rises above the
preset level for more than 10 seconds. The local display shows Battery High Warning. Figure 11 shows high battery voltage
specifications. The high battery voltage feature monitors the battery and battery charging system in the generator set operating
and off modes.
Engine Electrical System Voltage
12
24
Figure 11 High Battery Voltage Specs
High Coolant Temperature. The fault lamp illuminates yellow and the alarm horn sounds when the engine coolant temperature
approaches the shutdown range. The high coolant temperature warning does not function during the preset inhibit time delay
period after startup. The local display shows Coolnt Temp High Warning.
High Fuel Level (diesel-powered models only). The fault lamp illuminates yellow and the alarm horn sounds when the fuel
tank level on diesel models approaches near full. This fault requires an optional high fuel switch and fuel tank for the lamp to
function. The local display shows Fuel Level High Warning.
Input/Output Communication Loss. The fault lamp illuminates yellow and the alarm horn sounds when the controller loses the
input/output communication signal from the optional I/O module board. The local display shows OB1 Com Loss.
Low Battery Voltage. The fault lamp illuminates yellow and the alarm horn sounds when the battery voltage drops below a
preset level for more than 90 seconds. The local display shows Low Battery Warning. See Figure 12for low battery voltage
specifications.
Engine Electrical System Voltage
12
24
Figure 12 Low Battery Voltage Specs
The low battery voltage feature monitors the battery and battery charging system in the generator set operating and off modes.
The controller logic inhibits the low battery voltage warning during the crank cycle.
Low Coolant Temperature. The fault lamp illuminates yellow and the alarm horn sounds when the engine coolant temperature
is low. The low coolant temperature warning does not function during the preset inhibit time delay period after startup. The local
display shows Coolant Temp Low Warning.
Low Cranking Voltage. The fault lamp illuminates yellow and the alarm horn sounds when the battery voltage drops below 60%
of the nominal voltage (12 VDC or 24 VDC) for more than 6 seconds during the crank cycle. The local display shows Lo Crank
Vlt Warning.
Low Engine Oil Level. The fault lamp illuminates yellow and the alarm horn sounds because of low engine oil level. This fault
feature requires an optional low engine oil level sensor for the lamp to function. Local display shows Oil Level Low Warning.
Low Fuel Level (diesel-powered models only). The fault lamp illuminates yellow and the alarm horn sounds when the fuel
tank level on diesel-fueled models approaches empty. This fault requires an optional low fuel level switch for the lamp to function.
The local display shows Fuel Level Low Warning.
Low Fuel Pressure (gas-powered models only). The fault lamp illuminates yellow and the alarm horn sounds when low fuel
pressure on gaseous-fueled models occurs. This fault requires an optional low fuel pressure switch for the lamp to function. The
local display shows Fuel Press Low Warning.
Low Oil Pressure. The fault lamp illuminates yellow and the alarm horn sounds when the engine oil pressure approaches the
shutdown range. The low oil pressure warning does not function during first the 30 seconds after startup. The local display shows
Oil Press Low Warning.
Not in Auto (Generator Master Control Switches). The fault lamp illuminates yellow and the alarm horn sounds when the
generator set master control button is in the RUN or OFF/RESET mode. The local display shows Not In Auto Warning.
48
High Battery Voltage Range
13.2- 16.2
26.4- 32.4
Low Battery Voltage Range
9.6- 12.6
19.2- 25.2
High Battery Voltage Default Setting
15
30
Low Battery Voltage Default Setting
12
24
TP-6694 9/20