Question about Intermatic & Indoor/Outdoor Rain Tight Timer

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Timer is wired correctly but not working

On my Intermatic T101 Mechanical Time Switch, I can manually turn the house outside lights on (so I have power) but the timer does not seem to be working. I hear no hummer or see the gearing for the timer moving.

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Could be bad timer motor. You can replace these easily. Be sure timer motor wires are on the same terminals that incomming line wires are connected to. You can find parts and info at www.intermatic.com

Posted on Jul 23, 2010

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My Intermatic T101 has power going to it and the clock works normally. But when the clock trips the switching lever to ON or I manually turn it to on, it does not put out power. Is there any sort of fuse...


There is no fuse inside the T101.
If timer clock motor is working correctly, then 120Volt circuit is fine up to the timer.
Unknown if this is new installation , or old installation that stopped working.
Wiring might be bad, such that line and load wires are reversed.
Or light bulb might be bad.
Copy following links to help narrow down problem:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timers.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Dec 13, 2011 | Intermatic T101 - 24 Hr. Dial Time Switch...

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I NEEDAND CAN'T FIND DIAGRAM FOR THE INTERMATIC T101P201 FIREMAN SWICH


1) T101P201 timer does not have a separate manual yet
http://www.poolandspacontrols.com/products/mechanical%20time%20switches/pool%20and%20spa%20time%20switches.aspx

2) However typical T101P201 timer is ordinary T101 timing mechanism inside Nema 3R beige-colored outdoor plastic enclosure, with additional fireman's switch.
Wiring for T101 shows on following link, and shows on door of timer enclosure:
Check that your timer terminals match illustrations because many timers can fit inside Intermatic enclosures.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

3) Fireman switch wiring:
T101P201 has a fireman's switch that wires directly to the pool heater thermostat.
http://waterheatertimer.org/pdf/Intermatic-Firemans-switch-156T4042A.pdf
If you are not using the timer for pool heater, or if heater does not have connection for fireman's switch, then do not connect fireman switch wires, and just tape them out of the way.

Add a comment for more information

Jun 16, 2011 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

I am replacing an Intermatic T101 125v time switch dial with a GE 15600 replacement time switch module. The intermatic has posts A 1 2 3 4 and GE has L 1 X 2. How do these map to each other?


GE15600 replacement module snaps into standard Intermatic box.

Timers can be wired different ways. I know all these timers and have them sitting in my office.
I cannot see your timer or your wires, so read information below.
Open following link for clear crossover instructions:
http://waterheatertimer.org/GE-timers-and-manuals.html#GE-replacement

If Intermatic timer has terminals A 1 2 3 4, then that is not traditional T101, but sounds like 120Volt T103.
T103 can be wired many different ways, and is not fully compatible with GE replacement.
If you have wires on all terminals A 1 2 3 4, then add a comment and say what wires you have and what loads you are controlling, for more detailed information.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

For other folks who find this link, it is sometimes less expensive to repair T100 series Intermatic timer with $4 trippers and $20 clock motor.
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

Upvote the help.
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.

May 16, 2011 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

On my t101 timer the lights come on a said time by never turn off.the time on the clock is always wrong even when i reset the correct time.


Thank you for including model number of timer.

1) If T101 timer worked correctly before, and suddenly stopped working, then clock motor is suspect.
Order WG1570 clock motor and buy extra trippers also:
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi

2) If this is new installation, then wiring is suspect.
Line wires come from circuit breaker.
Load wires go to lights.
Open following link to see correct wiring:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

3) Add a comment for more free help.
Also take advantage of fixya expert assistance live.
For a price, expert works with you live while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 15, 2011 | Intermatic T101 - 24 Hr. Dial Time Switch...

1 Answer

New intermatic T101 timer problem - timer is not


Manual override lever is good overall test of T101 120Volt timer.
T101 timer has 3 terminals: A 1 2

See wiring diagram on following link:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

Electricians test, they don't guess.
So test your wire:
Separate all wires for testing.
Use ordinary 2 prong tester.
Tape wood sticks to tester leads to keep hands away from power.
Stand on dry boards. Do not hold or touch anything metal.
Turn power ON.
Test each wire to bare ground wire.
Tester lights up on Hot wire. 120V circuit has only 1 Hot wire. If you have 2 Hot wires, you might have 240Volt circuit and need T104 timer. If circuit has 1 Hot wire, then that Hot wire must connect to terminal 1.
If you have NO Hot wire, then check circuit breaker.
Hot wire is identified.
Now test Hot wire to all other wires, except bare ground wire.
Tester lights up on Neutral wire. Neutral wire must connect to terminal A.
If you have NO Neutral wire, then additional wiring is needed, or circuit needs further testing to see what type of wiring you are working with.
Bare ground wires connect to green ground screw.

Notice there are small white wires also connected to terminals A and 1. These small white wires power the 120V clock motor. With Hot on terminal 1 and Neutral on terminal A, the clock motor will run, and yellow dial will rotate.

If timer dial does not rotate after connecting Hot ans Neutral, then test voltage across Hot and Neutral to make sure it reads 120V.

Your circuit should have 2 wires remaining.
These wires go to 120Volt load (fan, light, motor)
Connect these two wires to terminals A and 2.
Try manual override.
If Load turns ON-OFF, then timer is wired correctly.
If Load does NOT turn ON-OFF, then reverse Load wires on terminals A and 2.

Add a comment any time.

Dec 28, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

1 Answer

How do I reset the time needle on my intermatic modle t101 The screw was loose and the needle move so


T101 Intermatic is 120Volt electro-mechanical timer

Silver pointer is located at 6:00 position.
Tighten the center screw with star screwdriver
Lift and rotate yellow dial until current time lines up with silver pointer.

geno_3245_71.jpg

How electro-mechanical timers work:
Place ON-OFF trippers on dial.
Trippers rotate around with passing time.
Trippers encounter on-off lever.
OFF tripper clicks lever one direction.
ON tripper clicks lever other direction.
Manual override lever clicks back and forth each time on-off lever is clicked.
How to wire T101:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101


geno_3245_72.jpg

Nov 16, 2010 | Intermatic T101 - 24 Hr. Dial Time Switch...

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