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Trying to upgrade an irrigation timer and I'm a little stuck on the wiring. Would like any input thanks.

Posted by Pat Carrigan on

  • Pat Carrigan
    Pat Carrigan Jul 29, 2020

    Changing this to a rainbird, wont be hardwired. Rather plugged in



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How to connect my well pump to timer

T8845PV has 120 volt input.... but 24Volt output,
You can use 24 volt to control contactor that can be used to switch 120-240 volt pump
Wiring on following link:


Water Heater Timers Save Money

If you need further help, I’m available over the phone at

Dec 02, 2013 | Intermatic T8845PV - Sprinkler-Irrigation...

1 Answer

Orbitz irrigation timers

Intermatic sprinkler timers, 12 hour on-off is possible plus day skipper option, and rain gauge connection etc::
More sprinkler timers:
Link above includes sprinkler timers on market today

If you need further help, I’m available over the phone at

Jun 03, 2013 | Electrical Supplies

1 Answer

How to install a digital timer model HD48S

HD48S is 8 or 11 pin timer.
Copy following link for illustrations

Always test the pins with multimeter set to ohms to check which pins have continuity.
Usually with Pin timers, the Input terminals give power to the timer.
The other pins or terminals are dry, which means they have not power when input voltage is applied.
With dry terminals, you add a jumper wire from the input terminal to the Com terminals.

If you need further help, I’m available over the phone at

Jun 10, 2012 | Hardware & Accessories

1 Answer

How to wire hunter rain clik rain sensor to r8816p101c

1) There are different rain clik model numbers shown in manual
Open 24 volt Rain clik manual:

2) The rain sensor has two wires.
And two additional wires are needed to run from rain sensor to sprinkler timer. For example, buy thermostat wire from local hardware store if wire is not supplied.

3) The rain sensor has a terminal block where wires are connected. .
Open manual above to identify markings on your terminal block.
For example Figure 1 shows SRC model, and with this model number, the rain sensor wires connect to terminals RS and C, and then two wires going to timer connect to terminals RS and and 1.

4) R8816P101C is 208-240Volt 24-hour irrigation timer.
Timer has two separate terminals for attaching rain sensor.

5) Timer power connections have 4 terminals. Do not connect rain sensor to power terminals.
Connect wires from sensor to the two sensor terminals.

6) Timer slide-switch must be set to ON position for rain sensor operation.
Sensor sends continuous 24Volts to irrigation timer.
When it rains, the rain sensor stops sending 24Volts to timer. Timer responds by not turning on power to irrigation pump.
To by-pass rain sensor, move timer slide-switch to off position.

7) Open following link for Intermatic replacement parts:

8) Take a moment and rate answer:
And take advantage of fixya expert assistance live.
For a price, expert works with you while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Sep 05, 2011 | Intermatic R8816P101C -...

1 Answer

How do you wire, wires from sprinkler to unit and wire from power

You posted under R8806 Intermatic sprinkler timer:

To see image of timer:
If this is not your product, then add a comment

You did not say if timer is 120Volt or 240Volt.
This information is on the door.

R8806P101 is 240Volt timer has 4 terminals from left to right. 1-2-3-4
240V Hot wires from breaker connect to terminals 1 and 3
Wires going to pump connect to terminals 2 and 4

R88 series 120Volt timer has same terminals as above.
120V Black hot wire from breaker connect to terminal 1
White neutral wire from breaker box connects to terminal 3
Black wire going to pump connects to terminal 2
White wire going to pump connects to terminal 4

Fixya also offers live phone support for a price.
Fixya phone expert can answer your questions by asking which timer you have and what circuit you are trying to control.

Dec 18, 2010 | Intermatic R8806P101C -...

2 Answers

The clock does not move forward. If I manually turn it, then it will work and turn on the system where the pins are. I haven't tried anything to fix it because I don't know where to start. Intermactic...

Sprinkler and irrigation timers are 14 day.

Intermatic has a page with manuals:
Open page, click plus next to timers and scroll down to sprinkler and irrigation timers
It's good to have the manual on hand in case the product is discontinued

That being said, it sounds like the clock motor is bad.
Snap timer free from box and tip out to see clock motor located on back of timer.
Get the number off clock motor

Intermatic site shows pages of clock motors: They are priced high, but cheaper than new timer.

Aplus supply sells assortment of Intermatic clock motors.

To search these pages quickly for your clock numbers, use browser Find (Click edit at top of bowser, click Find)

Nov 08, 2010 | Intermatic R8806P101C -...

1 Answer

How do I test a specific Orbit Watering station without turning on the whole system?

I have done this in a couple ways. With a digital timer you can select a zone on manual and turn only that zone on. with a mechanical timer, you can set the dial to that zone and increas the duration. You can "hot wire" the zone by moving the zone wire to connect to the low voltage wire input to the zone. You can take a transformer out to the ground box and with an extention cord "hot wire " the zone at the ground box.

May 06, 2010 | Orbit 57882 9 Station Super Dial...

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