Stack ST8100 - Page 52

Chapter 6. Troubleshooting STACK ST8100 Display System
42 Users Guide
No. Symptom Possible Cause Remedy Notes
9 Fixed pressure
reading of 0 PSI or
0.0 Bar or
suspected low/slow
reading
Pressure sensor has
failed
Replace sensor Swap with the
other pressure
sensor to confirm
fault
Faulty sensor
connections
Check pressure
connections
Check plumbing
for a blockage
(kinks in flexible
hoses)
10 All sensors show
fixed high values
Switch 1 (Peaks)
faulty
Replace switch Disconnect
switch. If values
return to normal,
replace switch.
Faulty switch wiring Check switch wiring Check wiring for
short between
connector pins K
and H (earth)
11 Displays pressure
values too low and
temperature values
too high
Low Battery voltage Recharge battery The system does
not give accurate
readings when
voltage is below
9.0V
12 Sensor reading
incorrect
Another gauge
connected to sensor
Dis-connect other
gauge
It is not
permissible to
connect a second
gauge
13 Peak values not
updated
Gate value set too
high
Change Gate RPM in
the display
configuration menu
Peak values only
updated while the
engine RPM is
greater than the
Gate value
Internal memory
battery dead
Return unit to Stack
for new battery
service
Display shows !!
MEM BATT !!
warning on power
up