Hi Kevin,
My Lux Power is acting up in that it also takes about 5 minutes before kicking in on Loadshedding!
In your case, did it happen post a fresh\new installation... or, has your lux power also been working fine for months etc, then its started acting up with the delay cycle?
You stated "I found that the ups function was not enabled" ... where exactly can one confirm this?
Regards
Eddy