Question about Intermatic Electrical Supplies

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Intermatic T101: have power, clock is rotating, lever "off", but it does not turn on when it hits the "on" pin. Turning the manual lever to "on" does work.

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  • 83 Answers

It sounds like the actuator pin may have broken off on the backside of the clock dial. They do sell just the internal portion of the T101 as a replacement.

Posted on Apr 29, 2017

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Posted on Jan 02, 2017

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SOURCE: Clock on Intermatic WH40 Timer Switch does not rotate

Timers are a waste of time . I would disconnect it and get rid of it. Water heaters nowadays are so energy efficient and the thermostats take care of when it heats and shuts off. Your timer might save you pennies a year!

Posted on May 25, 2009

SOURCE: 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.

Posted on Dec 28, 2010

  • 5245 Answers

SOURCE: 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

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

Posted on Jun 30, 2012

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My parafon 4001-0 is coming on at the wrong time..i have one set of trippers and they are correctly, and now have turned off the breaker to shut the lgihts off. I don't know what to do


Is the dial rotating and keeping good time?
Are the X2772 trippers worn down?
Does the manual override lever turn load on-off.

You can buy replacement trippers online.
Otherwise if the clock dial is slow, then clock motor is bad, and you need to replace timer.
http://waterheatertimer.org/Paragon-timers-and-manuals.html

Replace the 4001-1 120Volt timer with Intermatic T101 timer.
Crossover wiring is as follows.
Paragon terminal 1 => Intermatic 1
Paragon 2 => Intermatic 2
Paragon 3 => Intermatic A
Intermatic timers are easily repairable and adaptable for various voltages and different countries by changing clock motors
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

Oct 03, 2012 | Hardware & Accessories

1 Answer

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

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

1 Answer

I just replaced my filters and turned on the power and now I get nothing?


More information is needed.
Question posted under Intermatic T101 120Volt timer. Timer model number appears on inside of timer door. Add a comment any time and it sends email and I will respond.

Open following link for Intermatic timer troubleshoot walk-thru:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

When you turned off power, did you turn off circuit breaker? Or turn off manual override on timer?
If circuit breaker is turned on, does the timer dial rotate?
If timer dial rotates and keeps good time, then electricity to timer is good, timer clock motor is good.
If dial is rotating, what happens when you move override lever back and forth? Does load turn on?
Read through troubleshoot on link above and then add a comment with more details if needed.

Sep 17, 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

Intermatic T101 timer


T101 timer is strictly 120Volt timer
Wiring and manual show on following link
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

See another image of wiring:
http://waterheatertimer.org/images/T-101-control-120V-Load-450.jpg

Amazon sells T101:
http://www.amazon.com/Intermatic-T101-Hour-Dial-Timer/dp/B00002N5FN

If timer is not functioning, add a comment.

Grainger sells 125V clock motor and tripper for T100 series timers.
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi
If manual override does not turn Load ON, and the lever snaps crisp and clean, then check electric circuit. Check if load is operable.
If override does not snap crisp and clean, then timer may be worn out.
If dial does not rotate, replace clock motor.
If dial rotates but does not click override back and forth, then replace trippers.

How T101 works:
Lift and rotate dial until current time lines up with silver pointer
Clock motor rotates dial.
ON-OFF trippers attached outer edge of dial contact a lever.
ON tripper pushes lever one direction.
Off tripper pushes lever opposite direction.
Lever opens and closes electrical contacts.
Lever also pushes manual override lever back and forth with audible click.
geno_3245_196.jpg

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

1 Answer

I HAVE AN iNTERMATIC t100m TIMER it appears to have two "off" tripper levers but no "on" tripper lever attached to the clock face dial by a set screw . Do I need an "on "...


Yes, the T101M 120Volt pool timer requires both ON and OFF trippers:

Grainger sells T100 series on-off trippers:
http://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E054?Pid=search
Amazon sells T100 trippers
http://www.amazon.com/dp/B003YO2C5U/?tag=picc-20

Grainger sells the T100 125V clock motor
http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hi

How to wire T-101 120Volt timer
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

How Intermatic dial timer clock works.
Clock motor rotates dial.
Intermatic clock motor, located on back of mechanism, are replaceable
Trippers located on outer edge of dial push on-off lever
ON tripper pushes lever one direction
OFF tripper pushes lever opposite direction.
Lever pushes electrical contacts together and pulls contacts apart.
When lever moves, manual override also clicks back and forth with audible click.
To replace timer, replacement snaps into box without needing to changing box.
geno_3245_170.jpg

Dec 10, 2010 | Intermatic T101 - 24 Hr. Dial Time Switch...

1 Answer

Don't know what is it used for,and how it operates?I don't have any instructions for it.


You posted under T101 timer.
Most box timers have model number and instructions pasted on inside of door.
Instructions can seems a foreign language sometimes.

If your timer is different than T101, then add a comment with timer number.
I have extensive files on timers.

Box timers are generally used for heavy amperage loads like outdoor lights, swimming pool pumps, water heaters, parking lot lights and lighted outdoor signs.
They are surface mounted near breaker box, or in attic or basement, or garage.
Box timers are used in schools to ring bells, and inside factories to run processes and fans.
Some are complicated electronic devices used to control machines with one second precision.
Mechanical box timers are noisy when turning on-off, so are generally not installed in living area of house.

T101 timer is least complicated of any timer.
It is used for ordinary household 120V circuit.
Timer has 120Volt clock motor, and controls 120Volt circuit.
For example 120Volt water heater, or 120V grow lights, or aquarium, or any application up to 2 horsepower, for example timer can be located inside garage to control outdoor lights.
T101R is raintight outdoor box, with rubber gasket on door that seals tight when closed.
Raintight boxes are installed outdoors to operate 120Volt spas and pool pumps.
When box timer is rated for indoor, there is no rubber gasket on door, and that box is called NEMA 1 enclosure.
My local Lowes sells T101 T103 T104 > and each is for slightly different purpose and each wires differently.
Link below shows wiring and manuals for T100 series timers.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

Here's how T100 series timer works:
Lift and rotate yellow dial until current time lines up with silver pointer.
Clock motor rotates dial as time passes.
Clock motors are accurate for years, but current time has to be reset after power outage.
ON-OFF trippers are placed on outer edge of dial.
Trippers push a lever, and lever turns circuit on-and-off.
ON tripper pushes lever one direction.
OFF tripper pushes lever opposite direction.
Each time lever is pushed, manual-override lever clicks back and forth with audible sound.
geno_3245_125.jpg

Dec 01, 2010 | Intermatic T101 - 24 Hr. Dial Time Switch...

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...

1 Answer

Intermatic T101R turns off automatically, but does not turn on automatically again when "On" pin rotates through to the set time. "On" pin is screwed on tight and I verified it is the...


If timer has been working fine up until now, you probably need a new tripper pin
http://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E054?Pid=search

If lever is worn out, then you need new timer.
You can but a T-101 and swap insides without changing box
The T-103 will also work because it has a 120V clock motor
The T-104 is a 240V timer and will not work
You can buy the replacement timer mechanism and swap out
http://www.grainger.com/Grainger/INTERMATIC-5225438-2E021?Pid=search
http://www.grainger.com/Grainger/INTERMATIC-24-Hour-Dial-Timer-Mechanism-2E354?Pid=search
http://www.lowes.com/T-103

When wiring new timer, put wires back the same as old timer
For T101 and T-103 wiring schematic, see following link
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T101

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

2 Answers

Have model T103 Intermatic Timer that have been turning on the store lights for the past 20 years. Recently the timer does not turn the lights on in the morning and I have to manually flip the switch to...


Sounds like you need new ON pin
http://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E054?Pid=search

d3c9f33.jpg

The ON-OFF pins rotate around until they come in contact with a lever. The clock motor pushes the pin forward until it clicks the on-off lever. The pins are softer metal than the lever, so the pins wear out.

If you need a new T-103 timer some day > the new timer mechanism can snap right into the old box without changing boxes.

If the dial is not rotating, then you can replace the T100 series 125 Volt clock motor (the T103 clock motor is 125V)
http://www.grainger.com/Grainger/wwg/search.shtml?searchQuery=Wh40&op=search&Ntt=Wh40&N=0&sst=subset

Oct 12, 2010 | Intermatic & Indoor/Outdoor Rain Tight...

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