Stack st8130 series - Page 66

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No. Symptom Possible Cause Remedy Notes
6 Water or Oil
temperature
display gives a
fixed temperature
reading of 0°C or
0°F when the
water temperature
is either above 12
°C or 55°F
A temperature
sensor has failed
Disconnect
sensor and short
its leads together.
If the reading
changes, replace
the sensor
Air temperature
display gives a
fixed temperature
reading of -99°C
or -99°F when
the ambient
temperature is
above -20° C or
-4°F
Faulty sensor
connections
Check continuity
of sensor leads
for open circuits.
See No. 5 above.
Check the wiring
harness for open
circuits (pin E to
the red OT sensor
wire, pin P to the
red WT wire and
pin H to both the
black OT and WT
sensor wires)
7 Fixed pressure
reading of 999 PSI
or 99.9 Bar
Pressure sensor
has failed
Replace sensor
Fixed pressure
reading of
99.9 PSI or
9.99 Bar (low
range fuel
pressure sensor)
Faulty sensor
connections
Check continuity
of sensor leads for
open circuits.
See 5 above.
Pin D to the red
OP wire, pin R to
the red F wire and
pin H to both the
black OP and F
sensor wires
8 Fixed pressure
reading of -99 PSI
or -9.9 Bar
Fixed pressure
reading of -9.9 PSI
or -.99 Bar
Pressure sensor
has failed
Replace sensor Disconnect
sensor. If reading
changes to that in
7 above, replace
sensor
(low range fuel
pressure sensor)
Faulty sensor
connections
Check continuity
of sensor leads for
short circuits
Check the wiring
harness for short
circuit
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