It seems that my IT2040 defaults back to the 1 hours setting when I simulate a power outage by unplugging it. I've done both of the steps above, but can't get it to automatically go back to the 1/2 hour mode. After plugging back in, I have to hit 'Menu' then scroll down to 'Custom' and hit 'OK' then hit 'Menu' twice to get back to the main screen. I do not need to do any adjustments while in 'Custom' and it shows it is in the 1/2 hour mode. After doing those key strokes, it goes to the right settings, but before I do that, the light intensity is at the 1 hour mode setting for that time.
I was very nervous for a while because I hadn't yet programmed the 1 hour settings, so it was coming back on with both channels at 100%, which is the default setting during the afternoon. Not good for me since this is on a shallow tank and I am currently only at 30% blue and 10% white while ramping up a little each week.
The only way I could avoid everything coming back on at 100% was to program the 1 hour setting to similar intensity as my 1/2 hour settings. At least I won't bleach my corals if I have a power outage while away from home.
But I would still like for it to come back on with the 1/2 hour settings automatically. Any ideas?
Thanks,
Ron