Gardena 1820 Operating Instructions Manual page 11

How it works
If the connected Rain Sensor indicates an appropriate amount of rain,
the watering program is interrupted or not initiated.
Note : Manual watering (function On / Off-man.) is still possible.
12. Faults
Fault
Not able to open the
Water Timer using
the "On / Off-man."
function.
Watering not
initiated.
Battery flat after
working for a
short time.
If you have any problems with your Water Timer Electronic, please contact
our Customer Service or return the defective unit together with a short
description of the problem directly to one of the GARDENA Service
Centres listed on the back of this leaflet.
If covered under warranty, please include a copy of the receipt.
Disposal :
The product must not be added to normal household waste. It
must be disposed of properly.
Please return flat batteries to a GARDENA dealer or dispose of
them properly at your nearest recycling centre. Only dispose of
batteries when they are flat.
Possible Cause
Battery power too low.
Tap turned off.
Battery power too low.
Data input / changes
made while the pro-
gram was starting or
immediately before.
Tap turned off.
Soil Moisture Sensor
or Rain Sensor indi-
cate sufficient moisture. Moisture Sensor or
Not an alkaline
battery.
(in accordance with RL 2002 / 96 / EC)
Remedy
Insert a new
alkaline battery.
Turn on tap.
Insert a new
alkaline battery.
Input data or make
changes before or
after the starting times
you have chosen.
Turn on tap.
If dry, check setting /
position of the Soil
Rain Sensor.
Use an alkaline
battery.
11