mike, the buttons do feel a bit vague, but when i hold them down
i get what maybe a “reset” feature. all lights come on, flicker through
from START, BOTH TIME DELAY INDICATORS, and END. so it looks like they are making contact.
richard
I’ve emailed some stuff to you Richard which my help you. Couldn’t find that model number though so you might like to give the 8 digit product number (3???????) if we need to get more info on it. 🙂