Diagnostic And Output Leds - Compac CNG Installation And Service Manual

Loading Post Calibration

Diagnostic and Output LEDs

Diagnostic LED
Output LED
Compac Industries Ltd.
The diagnostic and output LEDs indicate the
operational state of the loading post.
The diagnostic LED D18 flashes in three different
states when the processor is working properly, as
outlined in the table below.
State
LED Flashes
1 Slowly and
consistently.
2 Slowly but
erratically.
3 Quickly.
The 10 output LEDs (D8-D17) pictured correspond to
the output triacs, which engage power terminals (T1-
T10).
When the output triac switches on and engages a
power terminal, the corresponding output LED lights
up. When the power is disengaged, the LED is not lit.
The output LEDs can be used to troubleshoot problems
with the components supplied by the power terminals.
The table below outlines which LED is associated to
which power terminal and the component that it
controls.
LED Power
Terminal
D8 T1
D15 T8
D17 T10
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When
The hose is idle and in
stand-alone mode.
The hose is idle and
communicating with a
Controller.
Start button is being
pressed or the nozzle
has been lifted from its
holster.
Component
Controlled
Solenoid.
Finished dispensing.
(Turns off when the
nozzle is stowed.)
Error indication.
Diagnostic and Output LEDs
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