Question about Intermatic & Indoor/Outdoor Rain Tight Timer

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My et103c will not manually or electronically turn off my pool pump.

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Copy following link to identify timer and download manual:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#ET-series
Unknown if this is new installation, or old installation that stopped working.
Check battery. The timer requires a battery. Located below the buttons.
ET103C digital electronic timer is discontinued but some folks still sell on ebay... selling possibly used timer. Timer has 1 year limited warranty from date of manufacture.
Timer has error code messages... if you receive no error code, then battery could be problem.
Line noise can cause timer not to function, such as fluorescent lights on same circuit etc.
ET103C clock mechanism is 120Volt 60 Hz. If pump and circuit are 208-240Volt, or 277V etc then this timer is not best choice unless neutral wire is available..
Add a comment and describe situation in more detail.

Posted on May 03, 2013

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Posted on Jan 02, 2017

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Check voltage at clock.


ET103C is discontinued digital electronic timer.
Copy following link to idcentify timer:
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#ET-series
Always check battery first... located under the buttons and above the wiring terminals.in pull-out tray. Use reset button to reset after battery change.
Test for 120Volt across terminals 1 and 2 should show at least 80% rated voltage,
Add comment and say if this is freshly installed timer, of if timer worked before.
Also add if circuit is 240Volt, and what size breaker, wire and HP motor

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