The T-104 is a 240Volt timer that will not work for 120V circuits
http://waterheatertimer.org/How-to-wire-T104-Intermatic-timer.htmlThe 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 http://www.grainger.com/Grainger/timer-accessories/timers/electrical/ecatalog/N-8hihttp://www.grainger.com/Grainger/INTERMATIC-Timer-Tripper-2E054?Pid=search
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