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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 trouble-free
operation, occasional problems may arise. If you are having a problem with your sta-
tion, please consult this troubleshooting guide before calling Davis technical support.
You may be able to quickly solve the problem yourself. 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 shows only
“RECEIVING FROM.....”
Indicates that console has rebooted. Hold the DONE key to re-
turn to Current Weather Mode. (Check time setting if power was
lost.)
Display is blank
Unit is not receiving power. Check the power adapter connec-
tions 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 oth-
er transmitter) manual.
• Console not receiving (wireless station) - See “Trouble-
shooting Reception Problems” on page 35.
• A reading has exceeded the limits indicated in the
specifications table.
• Calibration numbers may be causing readings to exceed
display limits. Check calibration number and adjust if nec-
essary.
Console is sluggish or does
not work at low tempera-
tures
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 shows “odd” values
or missing values.
You may have synchronized with another weather station near-
by. Change the transmission and reception IDs to a different ID.
Display “locks up”
Reset the console by removing AC and battery power then re-
storing power. If this occurs frequently in an AC-powered con-
sole, 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 hu-
midity 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 reed switch fields on diagnostic
screen (see page 37) 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 work-
ing.