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Chapter 4
Troubleshooting and Maintenance
Vantage Pro2 Troubleshooting Guide
While your Vantage Pro2 weather station is designed to provide years of trou-
ble-free operation, occasional problems may arise. If you are having a prob-
lem with your station, please consult this troubleshooting guide before calling
Davis technical support. You may be able to quickly solve the problem your-
self. Please see “Contacting Davis Technical Support” on page 53.
Note: Refer to the ISS Installation Manual for additional troubleshooting information.
TABLE 4-1: TROUBLESHOOTING GUIDE
Problem Solution
Display
Display is blank
Unit is not receiving power. Check the power adapter connections
and/or replace batteries.
Display shows dashes in
place of weather data
• ISS not plugged in (cabled station). See ISS manual.
• Sensors not transmitting (wireless station). See ISS (or other
transmitter) manual.
• Console not receiving (wireless station) - See “Troubleshooting
Reception Problems” on page 35.
• A reading has exceeded the limits indicated in the
specifications table.
• Calibration numbers may be causing readings to exceed dis-
play limits. Check calibration number and adjust if necessary.
Console is sluggish or does
not work at low temperatures
The console and display may not work below 32º F (0º C). Use an
External Temperature sensor in low-temperature locations or install
the console indoors.
Display “locks up”
Reset the console by removing AC and battery power then restoring
power. If this occurs frequently in an AC-powered console, plug the
AC power-adapter into a surge suppressor.
Humidity
Inside humidity seems too
high or too low
Make sure the console is not near a humidifier or de-humidifier.
Check calibration number and adjust if necessary. If inside humidity
is low, and inside temperature is too high, see “inside temp” below.
Also make sure the console backlight is not on.
Wind Speed
Wind speed reading seems
too high or too low.
For low readings, remove wind cups and check for friction sources.
Check the anemometer location. Is it sheltered from the wind? See
ISS manual for additional wind speed troubleshooting information.
Wind speed reads 0 either all
the time or intermittently
The problem may be with the anemometer. Test anemometer by
spinning wind cups. Check fields one-b and two-b on diagnostic
screen and call technical support.
Dew
Dew Point reading seems
too high or too low
Check calibration numbers for temperature. Dew point depends on
temperature and outside humidity. Make sure they’re working.
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