Troubleshooting Functions

Troubleshooting Functions

Troubleshooting functions involves problems with the values displayed. For other problems

• If you are unfamiliar with your system, see Forensic Troubleshooting.
• If nothing is working, e.g. no lights or displays, see Power Troubleshooting.
• Processor seems to be OK, but displays aren’t, see Bus Troubleshooting.
• If an individual display is acting up, see Display Troubleshooting.

Some functions missing

• Necessary interface missing. See Configuration.
• Function is disabled. See Disabling Tags.

Boatspeed not zero when it should be

• (Several Knots) Usually caused by the AC power to the battery charger. Try disconnecting the boat from shore power.
• (Small number or Intermittent) Caused by current or vibration transmitted through the hull to the paddle.

NOTE: because they have no bearings to unstick, ultrasonic boatspeed sensors will typically show a few tenths of a knot at the dock.

Apparent Wind Speed not zero when it should be

• (Several Knots) Usually caused by the AC power to the battery charger. Try disconnecting the boat from shore power.
• Caused by mast vibration.
• Apparent wind speed modified by roll rate. See discussion in Section 4, Option 8.

Bad Wind Direction

• No True Wind Speed. Since true wind is a vector solution, when true wind speed is zero, True Wind Direction has no meaning and is set equal to Heading.
• Check True Wind Angle, True Wind Speed and Heading for proper values.

Bad True Wind Angle

• Zero True Wind Angle. Since True Wind is a vector solution, when True Wind Speed is zero, True Wind Angle has no meaning, and is set to 0.
• Check Apparent Wind Angle, Apparent Wind Speed and Boatspeed for proper values

Bad Apparent Wind Angle

• Apparent wind angle modified by roll rate. See Setting Mast Height.
• Bad masthead sensor Bad Heading.or or connection between masthead and interface. Check for TEST Errors 33, 34 and 35.
• Loose masthead bracket.

Bad Heading

• No power to heading sensor. Most heading sensors require a separate power supply. Check that the heading sensor is receiving power.
• Some magnetic item has gotten near the sensor.
• Sensor needs compensation.

LOG or TIME resets on power up or engine start

• Dead backup battery. Return CPU for service when convenient.

Wierdness

• See Display Troubleshooting.

More detail

Technical papers on Troubleshooting