Hayward PowerFlo pump runs but the pressure gauge on the filter is very high and flow at the returns is reduced.

Safety first: Turn off the pump before changing valve positions or opening the filter.

• Backwash or clean filter: For sand/DE filters, backwash until water runs clear. For cartridge filters, remove and clean or replace the cartridge.
• Check valves: Ensure all return-side valves are fully open to allow proper flow.
• Verify multiport setting: Confirm the multiport valve is set to FILTER (or the desired mode) and that the handle is fully engaged.
• Monitor pressure: After cleaning, restart the PowerFlo and note the clean filter pressure. Use this as a baseline for future maintenance.