You posted under Aube timer.
http://waterheatertimer.org/Aube-timers.htmlAube timers have internal rechargeable battery that cannot be exposed to cold temperatures nor can battery be replaced when it goes bad.
Try resetting timer to see if function resumes.
Industry standard is 1 year limited warranty, so your product is under warranty.
The Aube T1032 is ordinary 7-day programmable, without astronomical capability, but it can be wired for single-pole or 3-way.
If you want same type of timer without battery, for single-pole only, Home Depot carries 15071
http://waterheatertimer.org/GE-timers-and-manuals.html#15071Advantage: no battery, and this timer can be exchanged in-store without shipping costs.
Lowes carries Utilitec 0141244, for 7-day single-pole, without battery:
http://waterheatertimer.org/Program-wire-Utilitec-LW60418.htmlLowes also carries 7-day & astronomic 0192773, single pole, no battery
http://waterheatertimer.org/Program-wire-Utilitec-LW60419.html
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