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TP-6804 1/1526 Section 2 Generator Set Operation
Fault Message
Warning (W) or
Shutdown (SD)
Condition Check
AC Sens Loss W(1sec.)
SD (3 sec.) *
AC sensing lost. In Auto mode, generator output
AC sensing is lost. Detection begins10 seconds
after crank disconnect.
Warning: after 1 second if no output detected
after crank disconnect.
Shutdown: after 3 seconds if voltage was
present and then lost.
Contact an authorized
distributor/dealer for service.
Accy PwrOver
Warning
W Accessory Power Overload. An over current
fault (short circuit) on the accessory controller
power output.
Contact an authorized
distributor/dealer for service.
ATS ComError W ATS communication error. Warning is displayed
if ATS interface connection is lost.
See Section 2.5.3.
Check communication wiring between
transfer switch interface board and
generator set.
ATS PhaseRot W ATS phase rotation mismatch. Transfer switch
phase rotation does not match, ATS will not
transfer.
Correct the ATS connection. Refer to
the ATS Installation manual, wiring
diagrams, and labels on the transfer
switch.
Aux Input SD * Auxiliary input. An optional customer-connected
input is closed. (Digital input from optional PIM.)
Check customer-supplied equipment.
Batt Chg Flt W Battery charger fault. Input to PIM from an
external battery charger (not the built-in battery
charger).
Check external battery charger.
Battery CrLo
Warning
W Engine starting battery voltage falls below
11 VDC for more than 10 seconds. Inhibited
during the engine crank cycle.
Clears when the battery voltage returns to an
acceptable level.
Check the battery rating and
condition.
Check the battery charger operation.
Charge or replace the battery.
Battery High W Engine starting battery voltage rises above 16
VDC for more than 10 seconds. Inhibited during
the engine crank cycle.
Clears when the battery voltage returns to an
acceptable level.
Check the battery rating and
condition.
Check the battery charger operation.
Battery Voltage
Low
W Engine starting battery voltage falls below 12.5
VDC for more than 90 seconds when the engine
is not running. Not operative during the engine
crank cycle.
Clears when the battery voltage returns to an
acceptable level.
Check the battery rating and
condition.
Check the battery charger operation.
Charge or replace the battery.
Eng Speed
High
SD * Engine speed exceeds 115% of the normal
running speed for more than 0.3 seconds.
Contact an authorized
distributor/dealer for service.
Eng Speed Low SD * Engine speed drops below 85% of the normal
running speed for more than 3 seconds.
Reduce the load.
Contact an authorized
distributor/dealer for service.
Exer Not Sch W Exercise not scheduled. No exercise is
scheduled on the controller.
See Section 3.6 or 4.5 for instructions
to set the exerciser.
Frequency High SD * Governed frequency exceeds 110% of the
system’s frequency setpoint for more than 10
seconds. Function becomes active 10 seconds
after engine start (10 second inhibit).
Contact an authorized
distributor/dealer for service.
* Engine cooldown runs before shutting down.