7-4 DIAGNOSTICS
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Help Code
or Error
Message
Description
Possible Causes
And
Corrective Action
HLP 13
Master Communication
Error.
Switch off the power until the dis-
play is dark and then switch the
power back on to reset.
HLP 14
Communication Failure.
Press and release the STANDBY/
ENABLE button or remove the
remote enable signal to clear the
code. The unit remains in
STANDBY until STANDBY/EN-
ABLE is pressed again or the
remote enable signal is reapplied.
The system was running and then
lost communication. Check the
connection of the RS-485 cables.
Power interruption to the power
supplies. Make sure there is
power to the power supplies and
that they are turned on.
Int LOC
Open Interlock
An open
interlock prevents the Auto
Controller from going to
the ENABLE state and
holds it in STANDBY
This is a user de
fi
ned fault in re-
mote operation. Review the in-
terlock scheme for the system in
question.
Not Rdy
Not Ready.
Auto
Controller held in STAND-
BY.
Insuf
fi
cient line voltage. Fault will
clear itself when the Auto Control-
ler receives suf
fi
cient line voltage.
7.2 Keeper Power Supply
The Keeper Power Supply front panel displays have the additional function of
displaying help codes and error messages. If it becomes necessary to display
a help code or an error message, the Keeper Power Supply may switch to
standby mode, depending on the type of code or message. The front panel
will display “HLP” and a number for the help code. The error messages will be
displayed as one or two abbreviated words. A description of the help codes and
the error messages is given below in table 7-2 along with possible corrective
