Manual

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Connections need to be waterproof and free of corrosion
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Check biSensor wires for damage
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Check biSensor for damage
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After making repairs follow the "Verify biSensor
Communication" instructions under Step 1 at the end of this
section
Double-check the wiring and connections to the biSensor
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Verify connections inside the valve box are tight
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Check for a faulty valve solenoid
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Check for lightning damage
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Make sure the 24 VAC transformer is plugged in and
receiving power
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Check that the 24VAC line and the common line from the
S100 are wired correctly
Er2 is displayed
The S100 has detected excessive
current while trying to communicate
with the biSensor
Display is blank.
LED's are off
S100 is not receiving 24 VAC
Er1 is displayed
The S100 cannot communicate with
the biSensor
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Er3 is displayed
Moisture Sensor is damaged
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Replace moisture sensor
11
WaterTec S100 Manual June08
Troubleshooting for Initial Installation
Problem Cause Solution
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This error is accompanied by one of the other error codes
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Refer to the other Er# for possible solutions
Er4 is displayed
There was a problem during the
S100 24-hour moisture threshold
calibration
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Follow the instructions under Step 5 at the end of this
section
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Make sure no extra water is applied to the biSensor after
calibration starts or the S100 may set a non-optimal threshold
Er5 is displayed
(This is a warning
message, pressing
“Read / Set” will
clear this)
Unexpected reading during 24-hour
moisture threshold calibration, final
reading was not substantially
different from the first (please refer
to the Er5 code on page 17)
Er6 is displayed
Unexpected low reading during
24-hour moisture threshold
calibration
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Rebury the biSensor as per Step 5 on page 8. When
reburying the biSensor be especially careful that NO rocks
are touching the blade of the biSensor as this can lead to
false readings
biSensor is reading a
value under 20.
Soil appears wet
There may be air pockets around
the biSensor
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Some older sprinkler controllers do not have access to
24 VAC; for more information on this go to
www.baselinesystems.com
Controller does not
have access to 24
VAC
Some older mechanical controllers
Follow the instructions under Step 5 at the end of this
section
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