User Manual

Maintenance a n d Troubleshooting 10-55
Pressure Depth Subsystem
The following ta bles contain general troubl eshooting techniques for
the pressure depth subsystem corresponding to the Peak Combo
Sensor or Surface Combo Sensor.
Note: Contact your regi onal ADS representative for
further diagnosis befo re r ep lacing a sensor.
Problem
Pressure depth readings are erratic .
Possible
Causes
Pressure vent tube may be pinched or bl ocked with
water.
Pressure dryer t ube may not be functioning properly.
Black cap may st i l l be on the dryer tube.
Possible
Solutions
Inspec t color of desiccant in dryer t ube and repl ace the
dryer tube if necessary.
Inspec t the vent tube along it s entire length t o ensure
the cable i s not pinched and that the cable ties securing
the vent tube are not t oo tight.
Verify that the black cap has been removed from the
dryer tube.
Problem
Pressure depth readings dis pl ay a good pat tern, but are
consistently incorrect.
Possible
Cause
Sensor physi cal offset may be incorrect.
Possible
Solution
Verify the sensor offs et and reactivate with t he correct
setti ngs if neces sary.