Flashing "H" next to run time hours led

I have a 2008 husqvarna zero turn with a 24 HP B&S engine. I am getting a flashing "H" to the left of the run time hour led. I've talked to a husqvarna tech and they say it means change oil and that it will clear after changing it. It hasn't cleared since the oil was changed as was wondering if anyone knew that it really means what they said. In the manual it mentions a change oil alarm an hour before and an hour after 50 hours,100 hours etc. It's been way over an hour since changing the oil and the flashing "H" hasn't cleared. Is there a manual reset to the alarm?