Question about Intermatic T104 24h 208-277v Mechanical Time Switch

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I HAVE 240 V AT THE BREAKER BUT NOT ON THE INTERMATIC T104M I HAVE 120 V AT THE TIMER

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1 Answer

1) If breaker tests 240V, but testing across timer terminals 1 and 3 shows 120V, then wire to timer is suspect.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

2) Check that screws on timer and on breaker are tight.
Double check voltages again.

3) Look at timer terminals, no plastic insulation can be under the screw plate.
I HAVE 240 V AT THE BREAKER BUT NOT ON THE - geno_3245_299.jpg

4) Move wire to another same-size 240V breaker and try circuit again.

Add a comment with your experience so others with same-similar problem can benefit.

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Fixya is always less expensive than a service call.

Posted on Apr 11, 2011

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Intermittent Intermatic Pool Timer T40003RT3 The pool timer is 220v but only one 110v 20amp breaker in the breaker box to the pool equipment and when it is off the pump will not run in manual mode.


http://waterheatertimer.org/How-to-wire-Intermatic-control-centers.html

http://waterheatertimer.org/Intermatic-control-centers-and-manuals.html#RT3

RT3 series has T104 240 volt timer -or- T103 120 volt timer, -plus- low voltage transformer for pool light.
The circuit breaker can be used for transformer, or another outlet or nearby light etc, or it can be used for a T103 120 volt timer.
To trace the wire back to breaker box.... open you main panel and start turning off breakers one at a time and label the panel.
See if you have single breaker or double breaker supplying power to pool equipment.
Gene

Water Heater Timers Save Money

Jun 10, 2015 | Intermatic Timer T40004RT3 300 Watt Pool...

1 Answer

How to set up intermatic t104m to work with two speed motor


T104 cannot be easily set up to handle 2-speed motors
You need T106 timer with NO NC terminals.

Or you can use the T104 to control relay with NO NC terminals... relay would need 240 Volt coil. Problem is most relays with NO NC terminals are 120 Volt coil or rated too low amperage for motor.

Or move T104 clock motor wires to A and 1... connect 240Volt power to A and 1... then terminals 3-4 are dry and can be used to control any voltage relay coil (120 Volt for example).
When T104 is ON, then relay uses NC terminals to send power to low speed. When T104 is OFF, then relay uses NO terminals to send power to high speed.
Buying T106 timer is probably cheaper and simpler.
http://www.amazon.com/dp/B000JJM7ZS/?tag=waterheaterti-20

http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T106

http://waterheatertimer.org/Buy-T100-series-timers.html

http://waterheatertimer.org/Intermatic-control-centers-and-manuals.html

Gene

Sep 21, 2014 | Intermatic Hardware & Accessories

1 Answer

Timer will not turn off


Question posted under Intermatic T10004R pool control center.

If installation worked before:
Might be worn 156T1978A tripper.
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#trippers

If this is new installation:
Might be wired incorrectly. Wires from breaker confused with wires from Load.
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html#T104
http://waterheatertimer.org/images/T104-wire-from-breaker-600.jpg

Sep 29, 2012 | Intermatic T10004R - Pool-Spa Mechanical...

1 Answer

Just intstalled a T104M according to the diagram and all the diagrams found on the web. The clock timer doesn't work. I can manually shut off the pump from the timer. I thought it was a bad tim


T104M is 208-277 timer mechanism that fits inside any Intermatic enclosure.
If voltage is not correct, then clock motor will not operate.
Since you did not say what voltage, I assume you have 240Volt pool pump.
Open following link to see the many ways to wire this timer:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
It is possible that you have the Load and Line wires reversed.
Line wire come from circuit breaker, and Load wires go to pump.

If the T104M mechanism is part of a control panel with more than one timer, and/or a freeze control, then re-post question with more specific information.

Jun 23, 2012 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

Pool pump starts randomly (as if there is a short) even when it is not set to start and stop. Otherwise works fine, not sure if I need to replace unit or dissassemble and clean or ????? T21004R


Sounds like 240Volt WG1573 clock motor has gone bad and needs replacement. But more checking is needed.

You posted under T2100-4R which is 60 amp Intermatic control panel with a single T104M 240Volt timer mechanism.
All Intermatic timer mechanisms can fit into same control center, so you can possibly have different timer mechanism inserted into the T2100-4R control center.
The control center can have up to 4 circuit breakers.
Instruction manual shows that timer can also have fireman's switch that is wired to pool heater and causes pool heater to turn off 20 minutes before pool pump turns off.
http://www.poolandspacontrols.com/products/mechanical%20controls/60%20amp%20pool%20and%20spa%20control%20panels.aspx

(1) First thing: If you have T104 mechanism, do a troubleshoot run-down to see if trippers, clock motor, or wiring are suspect:
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

(2) Next would be to check the circuit breakers for loose wires, burned connections, or the smell of burning or crackling sound that says breaker is loose on the busbar.

(3) Check for loose wiring on T104 and test circuit:
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html
(a) Push the manual override lever to OFF position and test across terminals 1 and 2 and then across terminals 3 and 4 to make sure timer is turning off power to pump. Both tests should show 0 volts.
(b) Push manual override lever to to ON position and repeat test above. Both tests should show 240 volts.
If the test fails, then buy new T104M timer mechanism.

(4) If the T104 timer is turning off both lines in the 240Volt circuit, then pump cannot turn on since neither wire is Hot.
However if your T104 timer is actually a T101 timer or if timer has different wiring, where timer is turning off only 1 leg and not both legs of 240Volt circuit, then pump has one hot wire available and a short to ground could cause pump to turn on unexpectedly.

Jul 08, 2011 | Intermatic T21004R- Pool-Spa Mechanical...

1 Answer

Need wiring diagram for T104M 208-277v Mech. Time Time Switch


Here is the basic instructions:
http://www.intermatic.com/~/media/files/intermatic/products/instructions/timers/t104%20-%20english.ashx

Below is a larger and better diagram of a 240V connection Terminal connections are White to White on 3 & 4 Black to Black on 1 & 2:
http://waterheatertimer.org/images/T-104-control-240V-Load4-35.jpg

More info: http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.html

I am assuming you have the 240 VAC clock motor so the clock timer motor wires are connected to terminals 1 and 3.

If you only have the 120 VAC clock motor the wires will be connected across terminals 1 and 2.
Thanks for choosing FixYa,
Kelly

Jun 27, 2011 | Intermatic T104 24h 208-277v Mechanical...

1 Answer

I have a Intermatic T40404R and need a replacement timer. I have examined the timers in my unit and find no part numbers. Other sites offer a T101M as well as a T104M. Which is the correct timer for my...


Thank you for including model number.
Intermatic catelog shows that T40404R is shipped with two T104M timer mechanisms.
However the mechanisms can be changed out for either T101M or T104M, and these timers can be wired many different ways so there is not 100% certainty unless you know or test voltages.

Here's the general difference
T101M is 120 Volt with 120Volt clock motor
T104M is 240 Volt with 240Volt clock motor

You can buy $20 clock motor and $3 trippers and fix the timer mechanism instead of replacing it.
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#T100
http://waterheatertimer.org/How-to-troubleshoot-Intermatic-timer.html

Add a comment to this thread any time as you're working on project and I will get message.

Other useful links:
http://waterheatertimer.org/Intermatic-trippers-and-parts.html#pool
http://waterheatertimer.org/How-to-wire-T104-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 21, 2011 | Intermatic T40404R - Pool-Spa Control...

1 Answer

Can I use my Intermatic model T-103 switch for 2 separate 20amp 120v circuits?


Yes, the timer motor is 120 volt, so connect both neutrals from each separate 120 volt circuit to the "A" terminal. Probably best to place all the neutrals (line and load) under a wirenut with a jumper going to the "A" terminal. The terminals are intended for only two wires.
One hot will go to terminal #1 and the other will go to terminal #3. The 120 volt timer motor is connected internally at the factory to the "A" terminal and terminal #1.

Dec 07, 2010 | Intermatic T104M 208-277Volt 40-amp Timer...

1 Answer

Clock doesn't run


Your timer has a manual override. Does 240 circuit work when manual override is turned on? If 240 V circuit works but clock doesn't, then you need another clock.

WW Grainger sells clock motor for $16
http://www.grainger.com/Grainger/wwg/search.shtml?searchQuery=Wh40&op=search&Ntt=Wh40&N=0&sst=subset

If circuit doesn't work when timer override is on, then check circuit breaker.

Both legs of 240 V breaker must be hot for T-104 clock to work. A 240V circuit can appear to have power if only one leg of the circuit breaker is hot. Test breaker or move wires to another same-size breaker to test for sure.

Sep 10, 2010 | Intermatic T104M 208-277Volt 40-amp Timer...

1 Answer

The timer does not operate. Breaker flipped once. I flipped breaker to reset. It never flipped off again. I try the manual switch to get my pool pump running and nothing happens at all. The lines are...


START YOU VOLTAGE CHECK AT THE BREAKER , IF YOU PUMP IS 230 VOLT THATS WHAT IT SHOULD BE ABOUT 230-240 V . YOU CAN ALSO CHECK IT AT THE TIMER AT THE 2 SCREWS THAT SAY LINE (NO VOLTS ITS A BAD BREAKER) AND THEN CHECK THE 2 SCREWS THAT SAY LOAD WITH THE TIMER ON "MOTOR RUN" (NO VOLTS ITS THE TIMER)

Jan 05, 2010 | Intermatic T104M 208-277Volt 40-amp Timer...

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