TP-6881 7/1558 Section 4 Troubleshooting
Risk of fire.
Can cause severe injury or death.
Do not smoke or permit flames or
sparks near fuels or the fuel system.
WARNING
Servicing the fuel system. A flash fire can cause severe
injury or death. Do not smoke or permit flames or sparks near
the carburetor, fuel line, fuel filter, fuel pump, or other potential
sources of spilled fuels or fuel vapors. Catch fuels in an
approved container when removing the fuel line or carburetor.
D
Check primary fuel regulator outlet pressure. This is
the line pressure.
D Check the primary regulator vent for obstructions and
clean, if necessary.
D Check fuel shutoff inlet pressure.
D Check secondary fuel regulator inlet pressure.
D Check fuel inlet pressure at the gas mixer.
D Perform fuel system maintenance if necessary. See
Section 2.8, Fuel System Maintenance.
4.9 Fault Messages
The RDC2 controller displays fault messages to aid in
troubleshooting. Fault messages, descriptions, and
recommended checks are listed in Figure 4-4.
Fault messages will also appear in the Event History in
SiteTech. The wording of the message in the Event
History may vary slightly from the message shown on
the controller display.
Identify and correct the cause of the fault condition.
Refer to the troubleshooting charts in Section 4.11 for
additional recommendations. Then press the OFF
button to r eset the controller after a fault shutdown.
Fault Message Action Description/ Comments Check
AC Sens Loss Shutdwn
(Loss of AC sensing shutdown)
Shutdown The controller shut down the generator
because there was less than 5% of
rated voltage measured on Phase A for
3 seconds, only in AUTO, only after
acceptable voltage (> 5% of UV setting)
has been detected.
Check for loose wiring and
connections.
Check all AC leads.
Troubleshoot alternator.
AC Sens Loss Warning
(Loss of AC sensing warning)
Warning The controller has measured less than
5% of rated voltage on Phase A for 1
second, 10 seconds after crank
disconnect.
Check for loose wiring and
connections.
Check all AC leads.
Troubleshoot alternator.
Accy PwrOver Warning Warning Accessory Power Overload. An over
current fault (short circuit) on the
accessory controller power output.
Check wiring to accessories.
Troubleshoot the accessories.
Refer to the documentation
provided with the accessories.
Alt Protect Shutdwn Shutdwn High generator current has been
detected. The generator set shuts down
to protect the alternator from damage
caused by overheating the windings.
(10/12RESV only)
Reduce the load by
disconnecting non-essential
equipment.
Check wiring and troubleshoot
connected equipment.
Check for phase imbalance.
Check for very high power
factor loads.
ATS ComError Warning
(ATS communication error)
Warning The controller has lost communications
with the RXT ATS that had previously
been communicating properly.
Check connection to ATS
module.
* Programmable Interface Module (PIM) required.
[ Applies during exercise runs and normal operation.
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