Vaisala AWS330 - Manual (Page 235)

Chapter 7 ___________________________________________________________ Troubleshooting
VAISALA ______________________________________________________________________ 233
WA15 Anemometer
Table 68 Some Common Problems and Their Remedies
Problem Probable Cause Remedy
Sensor is mechanically damaged. Send the sensor to Vaisala for
repair.
Improper or loose connections. Check wiring and tighten the screw
terminals.
After removing the connector's hex
nut, the connector is bent, which
breaks the connection wires. Check the connector.
Data is not received
from the sensor.
The sensor is not powered properly. Check that the supply voltage is
from 9.5 to15.5 VDC.
Sensor heating does not function. Check the status indicator of the
surge arrester. If the indicator is red,
change the removable plug in the
surge arrester.
Heating is disabled when the system
is running on backup battery. Check
that the AC (mains) power is
connected (the cable is not loose).
Heating element is not properly
connected. Open the sensor and check that the
heating element outlet is connected
to the connector on the printed
circuit board. Refer to the
instructions given in section
Replacing Bearings of WAA151 on
page 190 for details.
Sensor body is covered
with ice and snow.
Heating element does not function. Send the sensor to Vaisala for
repair. See section Product Returns
on page 235 for details.
Output from connector
pin C tracked with an
oscilloscope is not
square wave.
Frequency is not equal
to 14 times revolution
rate. Printed circuit board is damaged. Replace the printed circuit board.
Refer to the instructions given in
section Replacing Bearings of
WAA151 on page 190. See section
Spare Parts on page 200 for spare
part number.
WA15 Crossarm
Table 69 Some Common Problems and Their Remedies
Problem Probable Cause Remedy
Data is not received by
the data collection
system. Improper or loose connections. Check wiring and tighten the screw
terminals.
Improper or loose connections. Check wiring and tighten the screw
terminals. Shaft heating of the 151
series sensors is not
working.
Heating is not connected. Check the connections.