In-wall timers have 1 year limited warranty. Once they go bad, there is no 'reset' button.
You can try turning off circuit breaker and then power back up, but I've never seen a repair for this type timer.
Amazon sells the Woods 59008
Or buy heavier-duty Intermatic Ei1205
To install timer: turn power OFF, pull out old timer and take photo of wires before disconnecting, Then reconnect new timer with same color wires connected just like the old timer. It will have exactly same color wires, except the Leviton might have a blue wire, where the woods and intermatic have a red wire.
More countdown timer choices:
· 7 years ago