You posted under Intermatic HB88RC timer
If you have different timer, add a comment
HB88RC timer manual:
Here's HB88RC programming from the top:
Remove batrery from back of timer to reset timer and clear everything.
Re-install AA battery in timer so display will show, and you can program
Hold down clock button.
Press day button until current day displays.
Press Hour button until current hour displays.
Press min button until current minute shows.
Release clock button
Press PROG button until 1 ON displays
This is Event1 ON
Press Day button until selected day or days displays for event1 ON
If you want all week long, then press day button until all days show: MO TU WE TH FR SA SU
Press Hour button until 7pm shows >> this is event1 ON
Press Min button until :00 displays for event1 ON
Press PROG button until 1 OFF displays
This is Event1 ON
Press Day button until selected day or days displays for event1 OFF
Match days with ON time: so press day button until all days show: MO TU WE TH FR SA SU
Press Hour button until 12pm displays >> this is event1 OFF
Press Min button until :00 displays for event1 OFF
When programming is finished, press clock button to display current time
When programming is finished, press MODE button to select MODE > you want AUTO for timer programs to operate
Press MODE button once and this is manual override, and lights come on.
Press MODE button again and RDM displays, this is for random timer operation
Press MODE button 3rd time, and timer is set to AUTO
After setting MODE to auto, press clock button to display current time.
Plug timer into receptacle.
Plug lights into timer.
Add a comment any time.
A lot of folks have written in about this timer going bad and they have been unable to program the timer. Of course most timers work perfectly fine.