DON'T PANIC.

4 days into 12/12 is really nothing. No harm done. Your plants won't even notice. Get another timer and try that one on something else just to make sure it's still running. Also check the on off switches or to make sure they trip.

Oh you said digi, make sure there is not an off on the whole timer.
LOC NAR on probation Reviewed by LOC NAR on probation on . my timer didnt switch off help ! hey all,i think i may be in trouble, or not ? right my problem is this,i got up today and my hps was still running 4 hours after it should have switched off.my plants are 4 days into 12/12 and looking great.ive turned light off and removed timer, the strange thing is the timer is still working hmmmm.ive used this type of (4 amp digi) timer on previous grows with no probs,weird. anyway ,do i have a problem? how do i respond to it? any help would be great. my light is due back on tonight at 6 Rating: 5