User's Guide ______________________________________________________________________232 _________________________________________________________________ M211296EN-ATroubleshooting Mechanical Wind Sensor SetWA15WA15 Cross ArmTable 65 Some Common Problems and Their RemediesProblem Probable Cause RemedyData is not received bythe data collectionsystem.Improper or loose connections. Check wiring and tighten the screwterminals.Improper or loose connections. Check wiring and tighten the screwterminals.Shaft heating of the 151series sensors is notworking. Heating is not connected. Check the connections.WA15 Wind VaneTable 66 Some Common Problems and Their RemediesProblem Probable Cause RemedySensor is not powered properly. Check that the supply voltage isfrom 9.5 to15.5 VDC.After removing the connector's hexnut, the connector is bent, whichbreaks the connection wires.Check the connector.Data is not receivedfrom the sensor.Sensor is mechanically damaged. Send the sensor to Vaisala forrepair.Heating element is not properlyconnected.Open the sensor and check that theheating element outlet is connectedto the connector on the printedcircuit board. Refer to theinstructions given in sectionReplacing Bearings of WAV151 onpage 184 for details.Sensor shaft is coveredwith ice and snow.Heating element does not function. Send the sensor to Vaisala forrepair. See section Product Returnson page 234 for details.Output from theconnector pins C to Hdo not have the rightcode or are not at theproper level.Current consumption iseither less than 17 mAor more than 25 mAwhen the shaft isrotated mechanically.The printed circuit board isdamaged.Replace the printed circuit board.Refer to the instructions given insection Replacing Bearings ofWAV151 on page 184. See sectionSpare Parts on page 198 for sparepart number.
