ESP-ME3 Controller
16
EN
Watering Issues
Problem Possible Cause Possible Solution
Display shows a program
is active, but system isn’t
watering.
Water source not supplying water. Verify there is no disruption to the main water line and that all other
water supply lines are open and functioning properly.
Wiring is loose or not properly connected. Check that field wiring and master valve or pump start relay wiring is
securely connected at the controller and in the field.
Field wires are corroded or damaged. Check field wiring for damage and replace if necessary. Check wiring
connections and replace with watertight splice connectors if needed.
Loss of AC power. When there is a power loss and a 9 volt battery is installed, the system
does not irrigate but programs show as remaining active.
NO AC message on display. No Power detected. Check circuit breaker and that unit is plugged into socket or properly
connected to power source.
Controller may be plugged into a GFCI outlet or an
outlet that is wired to a GFCI outlet.
Check power to the outlet or reset the circuit breaker.
It just rained and the alarm
light is not illuminated,
why?
This is normal operation. The ESP-ME3 does not
consider the interruption of irrigation due to
rainfall as an alarm condition.
This is normal operation.
Programmed schedules do
not start.
Connected rain sensor may be activated. Set Rain Sensor to Sensor OFF to ignore the rain sensor. If watering
resumes, the sensor is operating properly and no further correction is
needed.
Connected rain sensor may not be operating
properly.
Let the rain sensor dry out, or disconnect it from the controller terminal
strip and replace it with a jumper wire connecting the two SENS termi-
nals, or set to Sensor OFF.
If no rain sensor is connected, the jumper wire
connecting the two SENS terminals on the termi-
nal strip may be missing or damaged.
Move dial position to Weather Sensors and set to Sensor OFF.
Too much irrigation Multiple Start Times in the same program. Separate start times are not required for each valve. A program only
requires single start time in order to run all stations in that program.
Multiple programs are running at the same time. Review programming to assure that the same Station is not active in
multiple Programs.
Valve is malfunctioning. Check to see if the ALARM light on the controller is lit solid, then repair
or replace the valve if necessary.
Seasonal Adjust setting is too high. Set Seasonal Adjust to 100%.
Flow Alarms
Error
ALARM
LED
Error Message On
Display
Flow Sensor -
High Flow Condition
Solid HIGH FLOW ALARM STATION "X"
Flow Sensor -
Low Flow Condition
Solid LOW FLOW ALARM STATION "X"
When a flow sensor is in use the ESP-ME3 monitors for
High Flow of 130% above regular learned flow. This
percent limit can be adjusted in the Rain Bird App
when used with LNK
TM
WiFi Module. If a High Flow con-
dition is detected, a “High Flow Alarm” is shown at the
display and the red alarm LED comes on. To clear the
alarm press the “Hold to Start” right arrow button dur-
ing the alarm message.
Low Flow conditions are also monitored. The limit
for Low Flow is 70% below the learned flow unless
changed in the Rain Bird App. A Low Flow alarm is
shown at the controller display and the red alarm LED
comes on.
To clear the alarm press the “Hold to Start” right arrow
button during the alarm message.
NOTE: Turning the flow sensor feature off and
then back on will cause the controller to learn
new flow levels and ignore previous error condi-
tions.
NOTE: If the flow sensor measures flow when the
controller is not scheduled for watering, a “HIGH
FLOW ZONE” alarm is shown on the display and
the red alarm LED comes on. To clear the alarm
press the “Hold to Start” right arrow button dur-
ing the alarm message.
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