Problems When Post Is Idle - Compac CNG Installation And Service Manual

Troubleshooting

Problems When Post is Idle

Problem
After powering the loading post,
PA:uSE
is displayed and the
countdown from 60 doesn't start.
The loading post pressure gauge
creeps past 200 bar when the
loading post is not in use.
The C4000 electronics are not
working. The indicator LEDs are
off and nothing happens when
you lift the nozzle (i.e., no beeps
888888
or is displayed).
The Output LED T10 is ON.
The watchdog LED D5 is
illuminated.
A display LCD segment is
always on or always off.
Compac Industries Ltd.
Likely Cause(s)
For push to start loading posts the start
button is held down.
The nozzle is not stowed or the nozzle
switch is active.
The regulator centre seal is damaged.
The solenoid piston seal is damaged.
Unacceptable voltage spikes are causing
the fuses on the C4000 to blow.
There is low input voltage.
An error state exists.
A processing fault has occurred.
Faulty display unit.
Page 45
Problems When Post is Idle
Recommended Action
 Release the start button.
 Correctly stow the nozzle.
 Replace the Regulator Valve Seals
(see page 31)
 Replace the Solenoid Valve Seal
(see page 27)
Fit a voltage-stabilising UPS to the

loading post.
 Replace the power supply fuses
(see page 35)
Turn the loading post off and then

on again.
 Check the power supply connections
and input voltage to the loading post
with a multimeter.
stabilising UPS will be required.
 Remedy the cause of the error (i.e.,
Display, Memory, or KG meter) by
checking the Fault Codes section
(see page 57).
 Clear the error by quickly pressing
the start button or nozzle switch five
times to view the totes.
 Turn the power to the loading post
off and then on again to reset the
watchdog.
 If the light still illuminates, there is a
fault on the C4000 microprocessor
board, such as a loose memory chip
or a broken track.
 Replace C4000
software chips
Replace C4000 processor board

 Replace Display PCB
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A voltage-
memory and