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TP-6810 11/13 23Section 2 Generator Set Operation
Fault
Warning (W) or
Shutdown (SD)
Condition Check
AC Sens Lost W(1sec.)
SD (3 sec.)
AC Sensing Lost. In Auto mode, generator
output AC sensing is lost. Starts 10 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.
Alt Protect
Shtdwn
SD High generator current has been detected. The
generator set shuts down to protect the
alternator from damage caused by overheating
the windings. (38RCL only)
Reduce the load.
ATS Com Error W Ats Communication Error. Warning is displayed
if RXT interface connection is lost. See
Section 2.6.3.
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 Voltage
High
W Engine starting battery voltage rises above
125% of the battery voltage setting 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 the
battery voltage setting (typically 12.5 volts) for
more than 90 seconds when the engine is not
running. 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.
CAN comm
fault
SD Engine CAN communications fault. Check wiring to ECM.
Check power to ECM.
Engine Coolant
Temperature
High
SD Engine coolant temperature exceeds the
maximum temperature for more than 5 seconds.
Function becomes active after crank disconnect.
Check for blocked air inlets and
exhaust outlets.
Engine Oil
Pressure Low
SD The engine ECM indicates low oil pressure for
more than 5 seconds. Function becomes active
30 seconds after crank disconnect (30 second
inhibit).
Note: The low oil pressure shutdown does not
protect against low oil level. Check the engine
oil level regularly as recommended in Section 4.
Check for leaks in the lubrication
system.
Check the oil level and add oil if the
level is l ow.
EngineSpeed
High
SD Engine speed exceeds 115% of the normal
running speed for more than 0.3 seconds.
Contact an authorized
distributor/dealer for service.
EngineSpeed
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.