Navman S100 Mode D'emploi page 15

Troubleshooting Chart
No display:
Check DC power connections and DC polarity with voltmeter. Voltage
must be between 10.7 and 16.6 volts.
No speed reading:
1. Remove speed impellor from skin fitting, spin paddlewheel manually
and check for reading.
2. Check for fouling on paddle and skin fitting.
3. Check for break in cable.
Low or high speed reading:
1. Check calibration.
2. Inspect for damage to paddlewheel or fouling of fitting or paddle.
Erratic speed reading:
1. Is there clear water flow over paddlewheel ?
2. Is paddlewheel aligned fore and aft correctly ?
No, or inaccurate temperature reading:
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.
NAVMAN S100 User Manual 13