Navman SPEED 2100 Installation And Operation Manual - No Display:
SPEED 2100 Installation and Operation Manual
N AVM AN
10
No display:
1. Check DC power connections and DC polarity with voltmeter.
2. Check fuse.
No speed or log readings:
Check and make sure that the paddlewheel on the impeller is not
stuck or fouled with growth.
Inaccurate speed readings:
1. Re-calibrate
2. Check paddlewheel
Erratic speed readings while moving:
1. Check to make sure that the impeller is aligned fore and aft.
2. Review the installation for possible erratic water flow over the impeller.
Erratic readings only while engine is running:
1. Re-route power and transducer cables away from engine, ignition
wires and battery cables.
2. Add feed-through filter capacitor on the positive terminal of the ignition
coil.
3. Add an alternator whine filter to alternator.
4. Replace spark plug wire with resistive type.
No temperature reading or is inaccurate:
1. Check calibration.
2. Check for break in cable.
Simulation mode:
At power up, if all the segments display for 5 seconds then the
instrument is in simulation mode.
Appendix B - Troubleshooting Chart