Question about Intermatic INC ST01AC DIGITAL IN WALL TIMER
Intermatic makes a number of programmable wall timers
ST01C & EJ500 & EJ351 programmable wall timers
EI600 sunset-sunrise astronomic
EI500 7 day 7 programs per week
Posted on Oct 12, 2010
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Posted on Jan 02, 2017
You didn't say if ST01C timer stopped working ... or if you are programming new timer and can't get it to work.
I assume you are programming new timer.
Intermatic: download EZ-instruction and full-manual so you have BIG print.
Troubleshooting in manual covers many things:
1)Press On-off button. You should hear audible click ... that tells you timer battery is good ... do the lights come on?? Load should turn on-off with manual override without programming. If load does not turn on, your wiring is wrong, a breaker is bad, a bulb is burned out, a 3-way switch on same circuit is bad.
2)Solution: review wiring diagrams > the key to wiring is black connects to Hot and blue connect to Load
Solution: If your black and blue wires are reversed, timer will not turn load on-and-off. Change them and see. Red wire is not used in 2-way switching.
3) Conflicts in programming cause timer to ignore program. For example program1 says ON at 7 and OFF at 8, but program2 says opposite.
4) Solution: make a chart of your programs
5) Solution: Reset timer and reprogram again being careful to follow instructions > instructions are tricky
Posted on Oct 05, 2010
Help page for ST01C with some info on EJ500
Posted on Nov 08, 2010
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