Vaisala WAC155 - Manual (Page 32)

User's Guide ______________________________________________________________________
30 ___________________________________________________________________M210822EN-A
Verification
Monitor the status indicator LED when powering up the WAC155
transmitter. The LED will flash green if the self-diagnostics are
completed without errors, and red if there is an error condition.
An error condition may be caused by an erroneous installation,
configuration, or a combination of both. For example, enabling sensor
heating without connecting the heating power will cause an error state.
You may be able to diagnose the problem using the service connection.
Howerver, if the problem is with the operating power, the service
connection may not be available even if the LED is flashing.
If the signal cable from the WAC155 transmitter is connected to a data
collection system and the system is powered up, check that the wind
readings react correctly. For testing the anemometer, rotate the cups
manually. For testing the wind vane, hold the vane in a few fixed angles
and verify the data.