Can't seem to figure this one out. First H1 error occurred last week, tub seems to work fine, pumps and blowers work, water was at set temp (98). So I turned breaker off for 30 minutes, took a close look at the control board, checked wiring and connection. Flipped the breaker back on and it worked fine for a week. However the H1 error popped back up again today. And as before, pumps work and temp is correct. Anyone have any ideas?