7-4 DIAGNOSTICS
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Help Code
or Error
Message
Description
Possible Causes And
Corrective Action
HLP 11
Run Failed
Press and release the STAND-
BY/ENABLE button or remove
the remote enable signal to
clear the code. The unit remains
in STANDBY until STANDBY/
ENABLE is pressed again or the
remote enable signal is reap-
plied. Filament is broken and
needs to be replaced. In this
case, HLP 3 is displayed on the
Filament Power Supply (see
below in table 7-2).
For initial operation at a new
operating condition, the gas
fl
ow may be too high or too low.
Decrease or increase
fl
ow.
Open or shorted discharge (an-
ode) cable. Inspect in vacuum
discharge cable and replace if
necessary. Not all damage to
the discharge cable may be ap-
parent; in this case replacing the
cable may be the only evidence
the cable was faulty.
