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Activate the program by adjusting the “PROGRAM” section to ON. 

Watering will begin at the “START WATER” time.
The timer is now programmed. “ON” will flash for 3 seconds and then 

stop. 
Move back to “ZONE” and select another unprogrammed zone. Repeat the 

programming steps to set-up the remaining watering zones.
Once you have programmed all desired zones, the timer screen will go 

blank after 5 minutes to conserve power. The time and program status, 

“ON” or “OFF,” will remain visible. Pressing any button will “wake” the 

timer.

Changing the Program 

To make a change to the program, simply wake the timer by pressing any 

button. Move to the sections you wish to change and adjust as needed. 

Watering will resume at the “START WATER” time.

Manual Watering 

There are 2 ways to water manually with this water timer. 
The first and easiest way is to simply turn the yellow knob above any of 

the 4 outlets. This will start the water flow immediately and it will remain 

on until you manually close the valve.
The second way is to open the valve with the electronic control unit. This 

has the advantage of automatically closing the valve.
Using the UP and DOWN arrows, move to “MANUAL.” Using the PLUS 

button, adjust the time you wish to water. The timer will wait 5 seconds 

and begin to water. Manual watering can be up to 240 minutes.

Rain Delay 

In the event of predicted rainfall, you can temporarily suspend automatic 

watering for up to 3 days. Simply move to “RAIN DELAY” and use the PLUS 

button to select the desired delay. The delay is in effect for all zones. After 

the delay period has passed the timer will return to the programmed 

operation.

Automatic Rain Delay 

This timer will work with AquaSentry, Melnor’s exclusive Automatic Rain 

Delay. AquaSentry actually monitors the moisture in the soil and delays 

watering if it is not needed. 

Disabling the Program 

If you would like to suspend automatic watering for an extended period, 

simply change the “PROGRAM” line to “OFF.” When you are ready to 

resume watering, switch “PROGRAM” to “ON.” Watering will begin at the 

“START WATER” time. Each “ZONE” is disabled or enabled independently. 

Program Memory 

This timer has memory. If the battery fails or is removed, even for 

extended periods, the program will be retained. After installing a fresh 

battery you simply need to set the “TIME.” The timer will retain the 

existing program.

Installing the Timer 

Note: It is important to complete the installation in this exact order. 
Plug the wire from the valve unit into the control unit. 
Install 2 AA Alkaline batteries
 by 

removing the battery holder from the 

back of the timer and inserting the 

batteries as indicated. Replace the 

battery holder.
Once installed, the LCD screen will be 

working with the letters “OFF” flashing 

beside “MANUAL.”
Rotate the “L” shaped bracket to the 

front of the unit.
Slide the control unit onto the bracket
.
Attach the valve unit to an outside faucet.
Ensure the 4 valve knobs are set to “TIMER” and turn on the water 

supply.
Attach a hose to any of the outlets
 and then to a sprinkler, soaker hose 

or other watering tool. You can attach up to 4 hoses.

Programming the Timer 

Press the UP key until the numbers beside “TIME” are flashing.

UP

MINUS

PLUS

DOWN

UP

MINUS

PLUS

DOWN

Set the current time using the PLUS and MINUS keys. By holding the key 

down the time will change rapidly. A tap will cause a stepped change. 

Once you have set the correct time, use the DOWN arrow key to move to 

the next section.
Use the PLUS and MINUS keys to select the “ZONE” you want to 

program. Each “ZONE” represents one of the outlets. Use the DOWN key 

to move to the next section.
Select when you want to begin watering in the “START WATER” section. 

Again adjust the time using the PLUS and MINUS keys. Move to the next 

section.
Set how long you wish the water to run in the “WATER FOR” section. 

This time can be adjusted up to 240 minutes. Move to the next section.
Select how often you would like to water in the “WATER EVERY” 

section. This is set in hours or days. Move to the next section.

3280

Four-zone Electronic Water Timer

User Instructions

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