Page 27
709-RVC NLP Manual
3. To check the diagnostics, press and hold the button for the
tank to be checked, the display will show the level for that
tank.
4. While continuing to hold down the button for the tank, press
the BATT button. When the display shows ”dIA”, release the
buttons, the display will then change to showing the signal
power diagnostic. This is indicated by a “P” showing on the
left digit, for example ”P26” indicates a 26% signal power.
5. The signal power will show for 5 seconds. The display will
then change to showing the sender height. This is indicated
by a small “h” showing on the left digit, for example “h 6”
indicates that the sender has 6 receive segments, which is 6”
high for a JS sender, 9” high for an ES sender, or 12” high for
an SS sender.
6. After 5 seconds of showing the height, the display will shut
o.
RV-C Diagnostics:
Here is a list of the messages broadcast over the RV-C bus:
FMI (Failure Mode Identier) Table
1 Datum value below normal
range
DIS or OFF
2 Datum value erratic or
invalid
Err, bot, top, ntP, nbp,
or sin
5 Open circuit, or output
current below normal
Opn
6 Grounded circuit, or output
current above normal
Sht
TROUBLESHOOTING AND INSTALLATION TIPS
What to do if the system freezes or is unresponsive:
1. If the display is unresponsive, it may be “hung” due to a static
discharge or electrical noise. Try rebooting it by shutting o
the 12V power to it for a few seconds, then turning it back on.
What to do if operation becomes erratic or stops completely:
1. Make sure all wiring connections are solid. Do not use spade
connectors to join wiring as they will degrade over time. Use
insulated crimp-on butt connectors or solder and insulate the
wire connections.
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