Rain Bird ESP-ME3 User manual

Rain+Birdt
ESP-ME3 Controller User Manual
LNKTM Ready

ESP-ME3 Controller
2
EN ESP-ME3 Controller User Manual
Technical Support
Questions?
Call Rain Bird toll free Technical Support at
1-800-724-6247 (USA and Canada only)
Hazardous Warnings
WARNING
Indicates a hazardous situation that, if not avoided, could result
in death or serious injury.
CAUTION
Indicates a hazardous situation that, if not avoided, could result
in minor or moderate injury.
NOTICE
Indicates information considered important, but not hazard-re-
lated (e.g., messages relating to property damage).
SAFETY INSTRUCTIONS
Specific safety-related instructions or procedures are described.
Symbols & User Operation
A
NUMBERS define a series of steps for the user to follow in
order to operate the controller.
NOTE: Notifies the user of important operating instructions
related to controller functionality, installation or mainte-
nance.
REPEAT: Indicates that a repetition of previous steps or
actions may be required for further operation, or to complete
a process.
Introduction..................................................3
Welcome to Rain Bird................................................... 3
The Intelligent Use of Water® .........................................3
ESP-ME3 Controller Features...................................... 3
WiFi Enabled.........................................................................3
Installation ...................................................4
Mount Controller .......................................................... 4
Connect Valves ....................................................................4
Connect Master Valve (optional)...................................4
Connect Pump Start Relay (optional)..........................5
Connect Flow Sensor (optional)....................................5
Connect Weather Sensor (optional).............................6
Connect Power ....................................................................6
Station Expansion Modules........................................ 7
Install Modules ....................................................................7
Station Numbering ............................................................8
Complete Controller Installation ............................... 8
Normal Operation ........................................8
Controls and Features.................................................. 8
AUTO .......................................................................................9
OFF...........................................................................................9
Display Indicators......................................................... 9
Basic Programming ....................................10
1. Set Date and Time..................................................10
2. Set Watering Start Times ...................................... 10
3. Set Station Run Times ........................................... 10
4. Set Water Days........................................................ 10
Custom Days of the Week............................................. 10
Program-Based Scheduling ...................................... 11
Common Programming Error ..................................... 11
Manual Watering Options ..........................11
Test All Stations...........................................................11
Run a Single Station ...................................................11
Run a Single Program ................................................12
Advanced Programming ............................12
Odd or Even Calendar Days ...................................... 12
Cyclic Days....................................................................12
Seasonal Adjust...........................................................13
Delay Watering............................................................13
Permanent Days Off ...................................................13
Special Features..........................................14
Options .......................................................14
Reset Button ................................................................14
Remote Accessories....................................................14
Detached Programming............................................ 15
Battery Life................................................................... 15
Appendix.....................................................15
Troubleshooting .........................................................15
Error Detection ................................................................. 15
Programming Errors (blinking LED) .......................... 15
Electrical Errors (non-blinking LED) .......................... 15
Flow Alarms ....................................................................... 16
Watering Issues................................................................. 16
Electrical Issues (solid LED illuminated)................... 17

ESP-ME3 Controller
3
EN Introduction
Welcome to Rain Bird
Thank you for choosing Rain Bird’s ESP-ME3 controller.
In this manual are step by step instructions for how to
install and operate the ESP-ME3.
The Intelligent Use of Water®
We believe it is our responsibility at Rain Bird to
develop products that use water efficiently.
ESP-ME3 Controller Features
Feature Description
Maximum Stations 22 (with optional Station Modules)
Master Valve or Pump Start Relay Supported
Start Times 6
Programs 4
Program Cycles Custom Days, Odd, Even and Cyclic
Permanent Days Off By program
Master Valve Control On/Off per station
Rain Delay Supported
Rain/Freeze Sensor Supported
Rain Sensor Control Global or by station
Seasonal Adjust Global or by program
Manual Watering Run Yes
Manual Program Run Yes
Manual Test All Stations Yes
Short Detect Yes
Delay Between Stations Set by program
Accessory Port Yes (5 pin)
Save & Restore Programming Yes
Station Advance Yes
LNKTM WiFi Module Supported
Flow Sensor Supported
Cycle+SoakTM Supported in Rain Bird App via
LNKTM WiFi Module
WiFi Enabled
The LNKTM WiFi Module allows remote connection to
a Rain Bird ESP-ME3 Controller using an Apple iOS or
Android compatible smart device. The mobile applica-
tion allows remote access and configuration of one or
more irrigation controllers.
For more information on the LNKTM WiFi Module and
the value this product can provide for your ESP-ME3
controller, please visit: http://wifi-pro.rainbird.com
LNKTM WiFi Module
(sold separately)
Manage Sites Remotely

ESP-ME3 Controller
4
EN Installation
Mount Controller
NOTE: Choose a suitable mounting location close
to a 120VAC wall outlet.
A
Drive a mounting screw into the wall, leaving an
1/8 inch gap between the screw head and the
wall surface (use the supplied wall anchors if
necessary), as shown.
B
Locate the keyhole slot on back of the controller
unit and hang it securely on the mounting screw.
1/8 IN.
AB
C
Open the front panel, and drive three additional
screws through the open holes inside the
controller and into the wall, as shown.
1234
VT VALVE TEST=
VT MV COM
VT MV COM567 11 12 13 17 18 19
1234 8910 14 15 16 20 21 22
CONNECT
120 VAC
C
A
B
MASTER
VALVE
COM
MV
1
2
SENS
E C
Connect Valves
A
Route all field wires through the opening at the
bottom or back of the unit. Attach conduit if
desired, as shown.
WARNING
Do not route valve wires through the same opening as power wires.
B
Connect one wire from each valve to the terminal
on the Base Module or Station Module that
corresponds to the desired station number (1-22).
C
Connect a field common wire to the COM
(common)terminal on the Base Module. Then
connect the remaining wire from each valve to
the field common wire, as shown.
D
To perform a Valve Test, connect the common wire
to the COM terminal and the power wire to the VT
terminal. This will immediately turn the valve ON.
Connect Master Valve (optional)
E
Connect a wire from the master valve to the MV
(master valve) terminal on the Base Module.
Then connect the remaining wire from the master
valve to the field common wire, as shown.

ESP-ME3 Controller
5
EN Connect Pump Start Relay (optional)
A
Connect a wire from the PSR (pump start relay)
to the MV (master valve) terminal on the Base
Module. Then connect another wire from the
pump start relay to the field common wire, as
shown.
B
To avoid the possibility of damage to the pump,
connect a short jumper wire from any unused
terminal(s) to the nearest terminal in use, as
shown.
NOTICE
The ESP-ME3 controller DOES NOT provide power for a pump. The relay
must be wired according to manufacturer instructions.
Only the following Rain Bird pump start relay models
are compatible with the ESP-ME3:
Description Note Model No.
Universal Pump Relay 110 volt only PSR110IC
Universal Pump Relay 220 volt only PSR220IC
Connect Flow Sensor (optional)
NOTE: Install the flow sensor in the field accord-
ing to the manufacturer’s instructions.
A
Run the flow sensor wires to the controller.
WARNING
Do not route valve wires through the same opening as power wires.
B
Connect both flow sensor wires to the Flow
terminals, as shown. Be sure to connect the
positive (sometimes red) sensor wire to the red
(+) terminal and the negative (sometimes black)
sensor wire to the grey (-) terminal.
B
Flow Sensor Settings
Set the controller to obey or ignore a flow sensor.
When set to Sensor ON, automatic irrigation will
be suspended per station if detected flow exceeds
learned flow by more than 30%. When set to Sensor
OFF, all stations will ignore the flow sensor.
Turn the dial to Flow Sensor.
• Press or to select SENS ON (sensor on) or SENS
OFF (sensor off).
Sensor ON Sensor OFF Flow detected
(flashing)
NOTE: When switching from Sensor OFF to Sen-
sor ON, the controller will begin to LEARN FLOW.
It will run each station for short period to set the
expected station flow.
NOTE: SeeTroubleshooting section of the Appen-
dix for Flow Alarms information.
A
NOTE: Connection to
pump and external
power not shown.
Refer to pump instal-
lation instructions.
PUMP START
RELAY
B
COM
PSR
1
2

ESP-ME3 Controller
6
EN Connect Weather Sensor (optional)
A
Remove the yellow jumper wire from the SENSOR
terminals on the controller.
NOTICE
Do not remove the yellow jumper wire unless connecting a rain sensor.
B
Connect both rain sensor wires to the SENSOR
terminals as shown.
WARNING
Do not route the rain sensor wires through the same opening as the
power wiring
NOTE: Rain Bird ESP-ME3 controllers are only
compatible with normally closed rain sensors.
NOTE: For wireless rain/freeze sensors, refer to
the sensor installation instructions.
B
Connect Power
WARNING
DO NOT plug in the transformer or connect external power until you
have completed and checked all wiring connections.
Installation with Pre-attached Cord
• Plug the attached power cord into a nearby 120VAC
electrical outlet.
1234
VT VALVETEST=
VT MV COM
VT MV COM567 11 12 13 17 18 19
1234 8910 14 15 16 20 21 22
CONNECT
120 VAC
Weather Sensor Settings
Set the controller to obey or ignore a weather sensor.
When set to Sensor ON, automatic irrigation will be
suspended if rainfall is detected. When set to Sensor
OFF all stations will ignore the rain sensor.
Turn the dial to Weather Sensors.
• Press or to select SENS ON (sensor on) or SENS
OFF (sensor off).
Sensor ON Sensor OFF Rain detected
(flashing)

ESP-ME3 Controller
7
EN Outdoor Installation with Direct Wiring
WARNING
Electric shock can cause severe injury or death. Make sure power supply
is turned OFF before connecting power wires.
POWER WIRING CONNECTIONS
Black supply wire (hot) to the black transformer wire
White supply wire (neutral) to the white transformer wire
Green supply wire (ground) to the green transformer wire
A
Locate the transformer wiring compartment in
the lower left corner of the controller unit. Use a
screwdriver to remove the cover and expose the
transformer connection wires.
B
Route the three external power source wires
through the conduit opening at the bottom of
the unit and into the wiring compartment.
C
Using the provided wire nuts, connect the
external power source wires (two power and one
ground) to the transformer connection wires
inside the wiring compartment.
WARNING
Ground wire must be connected to provide electrical surge protection.
Permanently mounted conduit shall be used for connecting main
voltage to the controller
D
Verify that all wiring connections are secure,
then replace the wiring compartment cover and
secure it with the screw.
1234
VT VALVE TEST=
VT MV COM
VT MV COM567 11 12 13 17 18 19
1234 8910 14 15 16 20 21 22
A
C
B
Station Expansion Modules
Optional Station Modules can be installed in the empty
slots to the right of the Base Module to increase the
station capacity up to 22 stations.
NOTE: 6-Station Modules are compatible with
ESP-ME3 and ESP-Me. They are not backwards
compatible with the ESP-M vintage controller.
NOTE: For ideal station sequencing, insert 3-Sta-
tion module after inserting all 6-station modules.
For more details see the Station Numbering sec-
tion.
VT MV COM
 
3-STATION
(ESPSM3) 6-STATION
(ESPSM6)
Expansion Modules
(sold separately)
Base Module
(included)
Install Modules
A
Verify the securing lever on the module is in the
unlocked position (slide to the left).
B
Place the module under the desired slot between
the plastic rails.
C
Push the module up into the slot until secure.
D
Slide the securing lever to the locked position
(slide to the right).
B C D
A
REPEAT for additional modules.
NOTE: Modules can be installed or removed with
OR without AC power connected. They are con-
sidered “hot-swappable”.
NOTE: It take about 30 seconds for stations to
become available for configuration after install-
ing a new module.

ESP-ME3 Controller
8
EN Station Numbering
The controller is configured with “fixed station num-
bering”, meaning that Bays Two, Three and Four can
accept either a 3 or a 6-Station Module. If a 6-Station
Module is NOT installed then the unused stations are
reserved for future use.
Example of Station Numbering when using two
3-Station Modules. A total of 10 stations are installed.
Bay One Bay Two Bay Three Bay Four
VT MV COM 
VT MV COM567 11 12 13 17 18 19
1234 8910141516202122
• The Base Module is installed in Bay One and uses
Stations 1 through 4.
• A 3-Station Module is installed in Bay Two and
uses stations 5 through 7. Stations 8 through 10 are
skipped and will be unavailable.
• A 3-Station Module is installed in Bay Three and
uses stations 11 through 13.
During programming, the controller will skip any
unused stations, creating a gap in station numbering.
The unused stations will show on the display as 8SKIP,
9SKIP, etc.
If the screen displays 20NOMOD where the 20 is flash-
ing, then there is no module installed for that station
number.
Complete Controller Installation
A
Reinstall and reconnect the front panel.
B
Apply power to the controller and test the system.
NOTE: The electrical connections can be checked
even if water is not available. If water is available
and you would like to test some or all of your
stations, use the Test All Stations feature of the
controller.
Normal Operation
Controls and Features Program
Select Button
Select Program
A, B, C or D
Start Times
Up to 6 Start
Times per
program
Run Times
Set station
Run Times
Manual Watering
Start watering for
one or all stations
Weather Sensors
Set controller to
obey or ignore a
weather sensor
Seasonal Adjust
Adjust Run Times
from 5% up to 200% Back/Next
Buttons
Select
programming
options
– / + Buttons
Adjust feature
settings
OFF
Disables automatic
irrigation
AUTO
Watering occurs
automatically
Date/Time
Set the current
Date and Time
ALARM
Indicator
Hold to Start
Manual
irrigation
Water Days
Select days to
allow watering
Flow Sensor
Set the controller to
obey or ignore
a flow sensor

ESP-ME3 Controller
9
EN AUTO
AUTO is the normal operating mode. Return the dial to
AUTO when programming is complete.
During Watering:
The display shows a blinking sprinkler symbol, the
active Station Number or Program, and the Remaining
Run Time.
• To cancel watering, turn the dial to OFF for three
seconds until the screen shows OFF.
To Manually Start a Program:
A
Press the Program Select button to select a
program.
B
Press and hold the Hold to Start button to
immediately start manual watering for the
selected program.
Program
Select
A · B · C ·
D
Hold to Start
Advance Station
OFF
Turn the dial to OFF to stop automatic irrigation or to
cancel all active watering immediately.
NOTICE
Watering will NOT occur if the controller remains in the OFF position.
NOTE: Manual watering can be started using
mobile apps or LIMR when dial is in OFF position.
Display Indicators
Display Function Description
ALL ALL All stations
CLEARED CLEARED Programming was cleared
CYCLIC CYCLIC Watering occurs at specific
intervals, such as every 2 days
DELAY DELAY Delay Watering Active
EVEN EVEN Even days watering
FLOW FLOW Flow Sensor
MV ON MV ON Master or Pump-start relay
is active
NOMOD NOMOD No station modules installed
for that station
ODD ODD Odd days watering
OFF OFF Controller will not water
PERMOFF PERMOFF Permanent days off for Odd,
Even, Cyclic watering
RAIN RAIN Rain Sensor
RESTORD RESTORD Programming restored
SAVED SAVED Save programming
SENS ON SENS ON Sensor will function if wired
SEN OFF SEN OFF Sensor is ignored even if wired
SKIP SKIP Station not used due to sta-
tion module configuration
SOAK SOAK
Soak time between watering
times - supported through
the Rain Bird app.

ESP-ME3 Controller
10
EN Basic Programming
1. Set Date and Time
Turn the dial to Date / Time
A
Press or to select the setting to change.
B
Press or to change the setting value.
C
Press and hold or to accelerate adjustments.
To change the time format (12 hour or 24 hour):
A
With Day of Month blinking, press .
B
Press or to select the desired time format,
then press to return to the date setting.
2. Set Watering Start Times
Up to six Start Times are available for each program.
Turn the dial to Start Times
A
Press Program Select to choose the desired
Program (if necessary).
B
Press or to select an available Start Time.
C
Press or to set the selected Start Time
(ensure the AM/PM setting is correct).
D
Press to set additional Start Times.
NOTE: The OFF Position for any start time is
between 11:45 PM and 12:00 AM.
3. Set Station Run Times
Run Times can be set from one minute up to six hours.
Turn the dial to Run Times
A
Press Program Select to choose the desired
Program (if necessary).
B
Press or to select a Station.
C
Press or to set the Run Time for the selected
Station.
D
Press to set additional Station Run Times.
NOTE: Only assign Run Times in a Program for
stations you want to water. If you do not want a
specific station to run in a selected program then
set the Run Time to zero.
NOTE: Rain Bird recommends that the maximum
irrigation station cycle time be less than the time
required for runoff to begin and that there be
adequate soak time before the next irrigation
cycle of that same station begins again.
4. Set Water Days
Custom Days of the Week
Set watering to occur on specific days of the week.
Turn the dial to Water Days
A
Press Program Select to choose the desired
Program (if necessary).
B
Press or to set the selected (blinking) day as
either ON or OFF, and to automatically move to
the next day.
C
Press or at any time to move the cursor to the
previous or next day.
NOTE: With Sunday selected, press the button
to enter and activate Cyclic Watering (see the
Advanced Programming section). If this is not
desired, press the button to return to watering
by Custom Days.

ESP-ME3 Controller
11
EN Program-Based Scheduling
The ESP-ME3 uses a programmed-based scheduling
method to create irrigation schedules. This means all
stations with a run time on the program will run in
numerical order.
Common Programming Error
The most common programming error for any pro-
gram-based controller is to set multiple Program Start
Times that cause watering cycles to repeat.
As an example: Program A has a 1st Start Time set to
run at 8:00 AM. But then a 2nd Start Time has mistak-
enly been set for 8:15 AM, which means that all sta-
tions would water a 2nd time.
In this example, a 3rd Start Time has mistakenly been
set for 8:30 AM. Which means all stations would water
a 3rd time. The desired watering time was 45 minutes,
or 15 minutes per station. The actual is 2 hours and 15
minutes, which is excessive watering!
Incorrect: Multiple Start Times set by mistake
Program
Letter
Program
Watering
Time
Program
Start Time
Station
Number
Station
Watering
Duration
A 1st 8:00 AM
1 15 MIN
2 15 MIN
3 15 MIN
A 2nd 8:15 AM
1 15 MIN
2 15 MIN
3 15 MIN
A3rd 8:30 AM
1 15 MIN
2 15 MIN
3 15 MIN
Correct: Only one Start Time
Program
Letter
Program
Watering
Time
Program
Start Time
Station
Number
Station
Watering
Duration
A 1st 8:00 AM
1 30 MIN
2 30 MIN
3 30 MIN
4 30 MIN
Manual Watering Options
Test All Stations
Start watering immediately for all programmed
stations.
Turn the dial to Manual Watering
A
Press or to set a Run Time.
B
Press the Hold to Start button.
C
Turn the dial to AUTO after display shows
STARTED.
During Testing:
The display shows a blinking sprinkler symbol, the
active Station Number and the remaining Run Time.
D
To cancel the test, turn the dial to OFF for three
seconds until the screen shows OFF.
Run a Single Station
Start watering a single station, or set multiple stations
to water in order.
Turn the dial to Manual Watering
A
Press or to select the desired station.
B
Press – or + to set a Run Time.
C
Press the Hold to Start button.
D
Irrigation will begin and STARTED will appear on
the display.
E
Turn the dial back to AUTO
REPEAT process as desired to add more stations
to the queue. When one station finishes watering
then the next station will start.
NOTE: Manual Watering (Test All, Run Single Sta-
tion and Manual Program) will start even when a
weather sensor is set to SENS ON (sensor on).

ESP-ME3 Controller
12
EN Run a Single Program
Start watering immediately for one program.
Turn the dial to AUTO.
A
Press Program Select to choose the desired
Program (if necessary).
B
Press the Hold to Start button to begin
watering the selected Program.
C
Irrigation will begin and STARTED will appear on
the display.
D
Press the Advance Station button to advance
to the next station if desired.
NOTE: A maximum of 88 stations can be queued
across all four programs.
During Manual Watering (Single-station or Single-program):
The display shows a blinking sprinkler symbol, the
active Station Number, and the remaining Run Time.
• To cancel manual watering, turn the dial to OFF for
three seconds until the screen shows OFF.
To add additional programs to the manual watering queue:
Turn the dial to Manual Watering
A
Press and hold Program Select to show program
letter on the display.
B
Press Program Select to choose the desired
program (if necessary).
C
Press the Hold to Start button to begin watering
the selected program.
D
Turn the dial to AUTO
Advanced Programming
Odd or Even Calendar Days
Set watering to occur on all ODD or EVEN calendar days.
Turn the dial to Water Days
A
Press Program Select to choose the desired
Program (if necessary).
B
Press and hold and until ODD or EVEN is
displayed.
Cyclic Days
Set watering to occur at specific intervals, such as
every 2 days, or every 3 days, etc.
Turn the dial to Water Days
A
Press Program Select to choose the desired
Program (if necessary).
B
On the Custom Days of the Week screen, press
until the Cyclic screen is displayed (after SUN).
C
Press or to set the desired DAY CYCLE, then
press .
D
Press or to set the DAYS REMAINING before
the cycle begins. The NEXT watering day updates
on the display to indicate the day that watering
will start as shown.
NOTE: See Special Features to set Rain Sensor
ON by Station.

ESP-ME3 Controller
13
EN Seasonal Adjust
Increase or decrease program run times by a selected
percentage (5% to 200%).
As an example: If the Seasonal Adjust is set to 100%
and the station Run Time is programmed for 10 min-
utes, the station will run for 10 minutes. If the Seasonal
Adjust is set to 50%, the station will run for 5 minutes.
Turn the dial to Seasonal Adjust.
A
Press or to increase or decrease Seasonal
Adjust for all Programs.
B
To adjust an individual Program, press Program
Select to choose the desired Program (if
necessary). Press or to increase or decrease
Seasonal Adjust for all Programs.
Delay Watering
Suspend watering for up to 14 days.
Turn the dial to AUTO.
A
Press and Hold the button to enter the Rain
Delay screen.
B
Press or to set the DAYS REMAINING. The
NEXT watering day will update on the display to
indicate when watering will resume.
C
To cancel a Rain Delay, set the DAYS REMAINING
back to 0.
NOTE: When the delay expires, automatic irriga-
tion resumes as scheduled.
Permanent Days Off
Prevent watering on selected days of the week (for
Odd, Even or Cyclic programming only).
Turn the dial to Water Days
A
Press Program Select to choose the desired
Program (if necessary).
B
Press and hold Program Select, then press to
set the selected (blinking) day as a Permanent
Day Off or press to leave the day ON.
Program
Select
A·B·C·D

ESP-ME3 Controller
14
EN
Program
Select
A · B · C · D
LNK READY
Hold to Start
Advance Station
ESP-ME2
Date /Time
Seasonal Adjust
Weather Sensors
AUTO
OFF
Manual
Watering
Water Days
Run
Times
Start
Times
Advanced
Sensors
ALARM
Special Features
A
Turn the dial to the desired position indicated
below for each Special Feature.
B
Press and hold and at the same time.
Set Interstation Delay
by Program
A station delay (from 1
second to 9 hours) ensures
that a valve has completely
closed before the next one
opens. Press Program Select
to set delay for different
programs.
Set Rain Sensor by
Station
Tells a station to obey or
ignore a rain sensor.
Save
Programming
Restore
Programming
Set Master Valve
by Station
Allows a station to be
controlled by a master
valve or pump start relay.
Set to Odd or Even
Watering Days
Options
Reset Button
If the controller is not working properly, you can try
pressing RESET.
• Insert a small tool such as a paper clip, into the
access hole and press until the controller is reset.
All previously programmed watering schedules will
remain stored in memory.
RESET
Remote Accessories
A 5 pin accessory port is available for Rain Bird
approved external devices, including:
• LNKTM WiFi Module
• LIMR Receiver Quick Connect harness
PORT
Set Flow Sensor by Station
Turns a flow sensor on or
off by station
Reset to Factory Defaults
All programmed schedules
will be erased.

ESP-ME3 Controller
15
EN Detached Programming
Program the front panel remotely on battery power.
The front panel can be removed from the controller
and programmed remotely using a 9 volt battery for
power. Settings can be programmed for all 22 stations
regardless of which Station Modules are installed in
the controller.
A
Remove the front panel.
B
Install a 9V battery in the battery compartment.
C
Program the controller.
NOTE: Program information is stored in nonvol-
atile memory so it is never lost if the front panel
loses power.
D
Replace the front panel (refer to Complete
Installation in the Installation section).
NOTE: After the front panel is re-installed, any
station that does not have a corresponding Sta-
tion Module installed will function as though the
run time is zero.
Battery Life
If the display repeatedly shows “-- -- -- -- --”, or there
is no display when using a 9V battery for remote pro-
gramming, replace the battery.
Appendix
Troubleshooting
Error Detection
The ESP-ME3 controller has built-in error detection
that can automatically generate an ALARM caused by
an essential programming error or if an electrical short
condition is detected.
The ALARM LED light on the ESP-ME3 controller front
panel will light up to indicate an alarm condition:
Programming Errors (blinking LED)
Error ALARM
LED
Error Message On
Display
No Start Times are set BLINK NO START TIMES
No Run Times are set BLINK NO RUN TIMES
No Water Days are set BLINK NO WATER DAYS
The error will go away when the station is successfully
run after condition is corrected.
NOTE: The dial must be in the AUTO position for
an ALARM message to appear on the display.
Electrical Errors (non-blinking LED)
Error ALARM
LED
Error Message On
Display
Master Valve short SOLID MASTER VALVE SHORTED OR
HIGH CURRENT
Station short SOLID STATION “X” WIRE SHORTED
When an electrical error is detected, irrigation for the
affected station is cancelled and watering advances to
the next operable station in the program.
The controller will attempt to water the affected sta-
tion again at the next scheduled watering. Completion
of a successful watering will clear the error condition
associated with that station.

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 LNKTM 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.

ESP-ME3 Controller
17
EN Electrical Issues (solid LED illuminated)
Problem Possible Cause Possible Solution
Display is blank or frozen,
the controller will not accept
programming or is operating
abnormally.
Power not reaching the controller. Verify the main AC power supply is securely plugged in or connected and working
properly.
Controller needs to be reset. Press the Reset Button. For details see “Reset Button” section.
An electrical surge may have
interfered with the controller’s
electronics.
Unplug the controller for 2 minutes, then plug it back in. If there is no permanent
damage, the controller should accept programming and resume normal operation.
Automatic error detection
indicates a problem by ALARM
LED and an error message on
display.
Short circuit or overload condition
in valve, master valve or pump start
relay wiring.
Identify and repair the fault in the wiring. Refer to compatible pump start relays. For
details see “Connect Pump Start Relay” section.
LED is flashing or solidly illu-
minated but I see no message
on the LCD.
Dial not in AUTO RUN position. Turn dial to AUTO RUN position. Push Reset button or power cycle the controller.

ESP-ME3 Controller
18
EN Certifications
Federal Communications Commission
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received,
including interference that may cause undesired operation.
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protec-
tion against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio commu-
nications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on,
the user is encouraged to try to correct the interference by one
or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/television
technician for help.
FCC Regulatory Safety Notice and IC Canada
Statements
The Class B apparatus meets all requirements of the Canadian
ISED (formerly IC) regulations - CAN ICES-3 (B)/NMB-3 (B).
Cet appareil de classe B respecte toutes les exigences de la
réglementation canadienne ISED (anciennement IC)- CAN
ICES-3 (B)/NMB-3 (B).
Safety Information
WARNING
Special precautions must be taken when valve
wires (also known as station or solenoid wires)
are located adjacent to, or share a conduit with
other wires, such as those used for landscape
lighting, other“low voltage”systems or other
“high voltage”power.
Separate and insulate all conductors carefully,
taking care not to damage wire insulation dur-
ing installation. An electrical “short” (contact)
between the valve wires and another power
source can damage the controller and create a
fire hazard.
All electrical connections and wiring runs must
comply with local building codes. Some local
codes require that only a licensed or certified
electrician can install power. Only professional
personnel should install the controller. Check
your local building codes for guidance.
If the supply cord of an outdoor controller is
damaged, it must be replaced by the manu-
facturer, its service agent or similarly qualified
persons in order to avoid a hazard.
If the supply cord of an indoor controller is
damaged, it must be replaced by a special cord
or assembly available from the manufacturer
or its service agent.
Outdoor controller shall be permanently con-
nected to fixed wiring by a flexible cord, and
have a cord anchorage. The cord anchorage
shall relieve conductors from strain, including
twisting, at the terminals and protect the insu-
lation of the conductors from abrasion.
CAUTION
Stationary appliances not fitted with means for
disconnection from the supply mains having
a contact separation in all poles that provide
full disconnection under overvoltage category
III, the instructions state that means for dis-
connection must be incorporated in the fixed
wiring in accordance with the wiring rules
NOTICE
Use only Rain Bird approved accessory devices.
Changes or modifications not expressly
approved by Rain Bird could void the user’s au-
thority to operate the equipment. Unapproved
devices may damage the controller and void
the warranty. For a list of compatible devices
go to: www.rainbird.com
Changes or modifications not expressly
approved by Rain Bird could void the user’s
authority to operate the equipment.
Date and time are retained by a lithium battery
which must be disposed of in accordance with
local regulations.

2019 Rain Bird Corporation
Registered trademark of Rain Bird Corporation D41274
The Intelligent Use of Water®
LEADERSHIP · EDUCATION · PARTNERSHIPS · PRODUCTS
At Rain Bird, we believe it is our responsibility to develop
products and technologies that use water efficiently. Our
commitment also extends to education, training and
services for our industry and community.
The need to conserve water has never been greater.
We want to do even more and with your help we can.
Visit www.rainbird.com for more information about The
Intelligent Use of Water®.
Rain Bird Corporation
6991 East Southpoint Road
Tucson, AZ 85756
USA
Tel: [phone]
Rain Bird Corporation
970 West Sierra Madre Ave.
Azusa, CA 91702
USA
Tel: [phone]
Rain Bird International
1000 West Sierra Madre
Azusa, CA 91702
USA
Phone: [phone]
Technical Services for
U.S. and Canada only:
1 (800) RAINBIRD
1-800-247-3782
www.rainbird.com
Specification Hotline
U.S. and Canada only:
1 [phone]
Rain+Birdt