Have not had any major issues with the Hayward Omnilogic, however last week we had a really large storm and lost power for 2 days. Pool was a disaster, but noticed that the filter pump would shut off. I back washed it, cleaned out the entire pool with a garden hose venturi vacuum, recheck all of the valves, but the pump would come on and 15 minutes it would shut off, it gave the alarm "Noflow water flow sensor". I was unable to reset this, the pressures are high, around 25, normally they are 12, however, when I start the filter it runs on prime mode, for around 5 minutes or so, when it goes into normal speed, then pressures are back down. So I assume that is a normal increase of pressure due to increase of flow. I back backwashed the filter, I have checked and recheck all of the valves, we have a spa so we have two automatic valves, they are in the right position and they work when turned on. The water flows appropriately out of the spa into the pool, the two skimmers are not blocked and the flow into them is normal.
I flipped all of the breakers back off, then back on, still same problem
Mechanically I can not think of anything, maybe a something happen to the sensor when the power was off, we did have a few pulses and turn offs of power for about 5 hours after wards.
Am I missing anything.