ZF Marine ClearCommand 9000 Series, Installation, Operation And Troubleshooting Manual, Page: 188 / 272

TROUBLESHOOTING
PageB2-3
Blinking Rapidly
A red LED that is
Blinking Rapidly
indicates that the Sys-
tem is in Troll Mode.
G) Has anything on the vessel changed shortly
prior to or when the problem arose?
This question is often overlooked, but should be consid-
ered. Obvious changes such as additions or changes to the
electrical/ electronic equipment onboard can affect the
electrical load and in turn the Processor’s power supply.
Ask the operator if any changes or maintenance to the ves-
sel’s machinery have occurred lately. Items which are sig-
nificant to you, the technician, may not seem so to the
casual owner or operator. An example would be changes to
the engine’s fuel system.
Ask about changes, that when initially considered, appear
to have nothing to do with the Control System. An exam-
ple where this really occurred was on a vessel which had
recently been repainted. For unknown reasons, the painter
took it upon himself to disconnect the connections at a
Control Head and then reconnected it incorrectly.
In many cases, these simple questions can resolve a
problem with no further action from you, the techni-
cian. Take the time to consider these questions. In the
long run, you will save yourself and the customer a lot of
time and money.