Question about Intermatic T101 - 24 Hr. Dial Time Switch - NEMA 1 Indoor Steel Case - Gray
How do I add 2 trippers to my little gray box water heater timer? I searched and searched and cannot find how to add any...
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Posted on May 02, 2013
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Posted on Jan 02, 2017
SOURCE: How to set Intermatic T104P3
The T-104 is a 240Volt timer that will not work for 120V circuits
The above link gives you information about the T104 T103 T101 in case you need to buy another timer
The difference is the voltages on the lines and voltage of the clock
1) How to sort out what you have:
-Which circuit breaker operates the timer and pump? If your circuit breaker is 240, then the pump is 240 and the timer is 240 so you most likely have the T-104
-To double-check: turn off the power and look at the name plate on the pump >>> the name plate will show voltage of the pump
-If breaker is 120, then you have T-101 that has three terminal screws inside the timer, or you have T-103 with 5 terminal screws inside the timer.
OK that's the basic information:
You say your trippers don't work.
Does the manual override work?
2) If the manual override does NOT work when you click it back and forth, and the unit has electricity, then the timer is probably bad. You can buy a new timer, and swap out the insides with old timer without replacing box.
3) If the manual override DOES work, then best news of all ... you may need new tripper pins
Posted on Oct 20, 2010
No overcharges here Ms bernarda
If I understand correctly you have Intermatic timer with a yellow dial
You have the Intermatic timer hooked to a small 2-1/2 gallon point-of-use water heater
Your point-of-use water heater is working fine
The timer turns on the water heater once a day instead of twice a day
And it seems like one of the tripper pins has fallen off the yellow dial
The tripper pin is missing and you can't find it or put it back.
You can turn off the electricity and poke around the bottom of the timer box and see if tripper pin can be pulled out using tweezers
Do you know Grainger sells Intermatic tripper pins for $1.67 plus shipping?
Now, if this is not the right answer, you post a response and we can probably help
Posted on Oct 21, 2010
SOURCE: I just moved in to
Open following link for Intermatic troubleshoot checklist.
Once timer checks out, you need to check circuit going to water heater.
Water heater might be the problem.
Remove trippers from timer dial and set override lever to ON.
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Posted on May 01, 2011
Open following link for T100 series parts:
The T173 timer is 120Volts and wires same as T103.
Only difference between T173 and T103, is the T173 has day-skipper wheel
Posted on Jun 26, 2012
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