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I have an Intermatic R8815P101C sprinkler timer. This is the second timer that seems to have broken on me in the past five years. No changes have been made to any wiring, etc., but the clock dial no longer will turn. I can operate the sprinklers manually, which is great when I am home, but that's not always the case. Will I have to replace the entire unit (ugh, $140!) or is there a cheaper alternative. Most timers I see at Lowes, etc. are 120V in and 24V out, whereas mine is 120 in and out.

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The 24 volt timers are set up for a completely different type of sprinkler system. You could make it work on yours, but you would have to re wire the whole system. And it would cost 10 times the amount of a new timer. There is no way around replacing the whole timer. You can replace the clock part of the timer, but it would probably cost as much or more than the whole timer. But I can tell you that if you oil the gears on the back of the clock a couple of times a year, it will make your timer last a lot longer.

Posted on Sep 13, 2010

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1 Answer

Nelson water timer instructions


http://waterheatertimer.org/Woods-timers-and-manuals.html#sprinkler
Link has all sprinkler timer manuals available online 2012.
Probably does not include older timers since manufacturers post recent manuals, with expectation that today's sprinkler timers do not last long. Except for Intermatic 120V-240V sprinkler timers that are made to last decades and have replacement parts.
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler
Add a comment as needed.

Jun 06, 2013 | Hardware & Accessories

1 Answer

T8845pv


You have 120Volt Intermatic sprinkler timer with 24Volt output.
Copy following link for setting sprinkler timer:
http://waterheatertimer.org/pdf/How-to-Set-and-Troubleshoot-Intermatic-sprinkler-timer.pdf
Copy following link for wiring Intermatic sprinkler timer:
http://waterheatertimer.org/How-to-wire-Intermatic-sprinkler-timers.html
Add a comment
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May 25, 2013 | Intermatic T8845PV - Sprinkler-Irrigation...

1 Answer

Intermatic R8806P101C timer hesitates when turned on manually


1) Copy following link for troubleshoot:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timers.html
http://waterheatertimer.org/How-to-replace-Intermatic-clock-motor.html

2) Blow out timer with compressed air.
Turn power off and spray highly flammable WD 40 vapor onto gears
Buy new 240volt WG733 clock motor, and timer will be good as new:

3) Add comment dec 2012 and say what you discover

Dec 14, 2012 | Intermatic Hardware & Accessories

1 Answer

How do you wire a Toro Rain Sensor 53769 to Intermatic Timer T8845PV


The rain sensor only connects to Intermatic sprinkler timer IF the timer has the rain sensor terminals.
Not all Intermatic sprinkler timers have that connection.
For example R8815P101C and R8816P101C have rain sensor terminals

I think the rain sensor terminals are located to the right of main wiring terminal block.
There are two screw terminals.

The rain sensor plugs into a power source, and then sensor wires connect to the timer.
Apply no voltage to the sprinkler timer terminals.

http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler

May 01, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

I have Intermatic sprinkler model T8845pv. I want to set it for daily watering in only one of 8 zones. When I remove the gold pins in the main dial and locate the zone I want to water, it waters the...


Intermatic sprinkler timers are 24 hour repeat cycle, with day-skipper option.
The timer does not change zones. The timer just turns ON-and-OFF at scheduled times.
Each tripper represents 12-15 minutes of watering. And then the timer circuit turns OFF.
When timer circuit turns OFF, the sprinkler system is designed to advance to next zone each time.
So when the timer circuit turns OFF and then turns ON again, your sprinkler control starts watering the next zone. This is the way sprinkler systems are designed.
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#sprinkler

If you had a sprinkler system with 1 zone, or could change your sprinkler system to 1 zone on certain days, then the timer would turn that zone on-off each time.
Call a local sprinkler company and see if they have a dual control or some solution >> but sprinkler controls are outside my area of expertise. I am timer expert.

You could solve problem with two separate sprinkler systems, but that would require two timers. I have never seen a 2-channel sprinkler timer. There are electronic two-channel timers that can handle two different programming schedules with minimum 1 minute on-off, and these timers can cost a few hundred dollars up to thousands, PLUS cost of the dual sprinkler system. Add a comment and let me know if two-channel timers are something you want information on.

Apr 27, 2011 | Intermatic R8806P101C -...

1 Answer

The pins on my intermatic timer are pulled up for 2 days. why is the timer allowing the sprinklers to come on every day?


R8816P101C manual:
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/r8816p101c%20-%20english.ashx

I think it is more likely sprinkler valve is stuck than timer contacts are fused together.
This is because Intermatic mechanical timers physically pull and push contacts together-apart.
Take trippers all the way out and see if that changes.
Turn off 240V circuit breaker and see if that changes.
Add a comment and let me know what you find.

Usually you see trippers worn down and the sprinkler does not turn on.
http://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E132?Pid=search
Or WG733-14D 240V clock motor slows or stops, then dial will not rotate.
http://store.nexternal.com/intermatic/categories.aspx?Keyword=WG733-14D&x=16&y=9
Sometimes the 133T115A toggle goes bad.
http://www.superiorlighting.com/product_p/133t1115a.htm
Image
http://waterheatertimer.org/images/R8816P101C-1000.jpg

Mar 09, 2011 | Intermatic R8816P101C -...

1 Answer

I need the instruction manual for Model # R8806R101C.


Intermatic manuals
http://www.intermatic.com/customer%20service/instruction%20manuals.aspx

R8806R101C manual is not shown on Intermatic, even among discontinued models.
But product is still for sale.

R8806P manual is available:
I suspect manual is very similar since it's a mechanical time piece. If not, then add a comment with specifics and I will help.
120V:
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/r8815p101c%20-%20english.ashx
240V
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/r8806p101c%20-%20english.ashx

R88 series sprinkler timers: click model number to see manual
http://www.intermatic.com/products/timers/mechanical%20time%20switches/sprinkler%20irrigation%20timers.aspx

Nov 22, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

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