
17. The windlass does not stop
exactly at the preset point.This is not a fault. Stopping is accurate to +1 chainwheel revolution. The chainwheel may run on slightly
with momentum.
18. AA550 counts when the
windlass is not turning or
counts erratically displaying a
large number eg 8888.
The sensor could be damaged, incorrect cable may be fitted, or the AA550 may have been subject to ex-
ternal interference - RF or electrical. Check that the sensor cable is not damaged and that the cable fitted
is Beldon 9501 or equivalent, 2 core, tinned, copper, screened, as specified in the instructions. Check for
external interference on the boat eg damaged or loose RF cables or aerials or other instruments that may
not be working correctly or have been damaged by electrical interference including lightning.
19. AA550 beeps when it is
turned off or locked.
Anchor rode is running through the windlass. Check if the windlass is being operated using the deck
switches or a remote control. If not, check the windlass and anchor is secured.
20. The count pauses
during retrieval.
If the sensor indicator is pulsing this is not a fault. The rode is changing from rope to chain.
13. AA550 will not turn
on or turns off.
Check if the safety lock is on - the LCD will display LoC. Refer note 2 above.
Check voltages at the battery and the AA550. The LCD will display Lo Pr. Refer note 3 above.
Check wiring for loose connections to the solenoids. The LCD will display SoL Up or SoL dn if the
wires are disconnected. Refer note 12 above.
Check that the windlass is not already in operation using the deck switch or remote control.
Check the total rode on board (Calibration 3 - Operation Manual Pg 4) is not set to OFF.
14. AA550 will not
operate the windlass.
Check battery connections, polarity and voltage. The voltage to the AA550 can be checked by turning it
off and holding the Down button. The voltage is displayed on the LCD. See page 7 for minimum volt-
ages. Check fuses and wiring and for the Lo Pr diagnostic message. Refer note 3 above.
15. AA550 will operate the
windlass manually but Auto
function does not work
16. Windlass rotates down
when the Up button is
pressed and up when the
Down button is pressed.
Check the rode to be released is not set to zero. The LCD will display OFF. See note 4 above. Use the
AA550 manually and check for specific diagnostic messages SEN or LoAd (See notes 1 and 5-10 above).
The motor or solenoid wiring is reversed. Change the wiring and check the direction of the windlass
rotation.
12. SoL uP or SoL dn
Displayed briefly when the
AA550 is turned on. The
AA550 will not operate the
windlass.
SoL uP - The Up (orange) wire is not connected to the solenoid. SoL dn - The Down (yellow) wire is not
connected to the solenoid. These messages also appear if the up or down button is pressed on the AA550
when the windlass is already in operation using a deck switch. Diodes or interlock devices between the
AA550 and the solenoid will also cause these messages. The AA550 has internal diode protection. Exter-
nal diodes will cause the system to fail.
11. SoL oL
Displayed when the Up or
Down button is pressed. The
windlass may operate for a
short period and then stop.
The solenoids could be exceeding the maximum 4 Amps or a solenoid wire is shorted to ground. The
AA550 is designed to turn the solenoids off if these events occur. Check the solenoids and the wiring and
fix as necessary.
9. SEN 4
Displayed when the AA550
is operated manually. The
sensor indicator does pulse.
Auto does not work.
The sensor is too close if running rope/chain or the windlass has been run without rode.AA550 will oper-
ate the windlass up and down but the count will not be accurate. Try resetting the AA550 by running
the windlass up and down for 10-15 seconds. If the message still appears make sure you have the correct
calibration setting for the windlass and rode. Check the magnet and sensor are aligned, the sensor is in
the correct quartile and the gap between the sensor and magnet is correct. Check for loose wiring from
the sensor to the AA550. When fixed reset the AA550 as above. To reset manually, the anchor must be
docked and the AA550 reset to zero twice. To reset to zero - press and hold the ON/OFF button. Release
when the display shows 0.0. the display shows 0.0.
10. SEN 5
Displayed during retrieval.
The sensor indicator does
pulse. Auto does not work.
The AA550 has not detected the change from rope to chain. Use Manual Up to complete retrieval. The
count displayed will not be accurate. Check for rope slippage and that the rope and chain are the correct
size for the chainwheel. Check that the sensor is in the correct quartile. When fixed reset the AA550 to
zero. The anchor must be docked. To reset to zero - press and hold the ON/OFF button. Release when the
display shows 0.0.
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