Have a Pentair LA01N booster pump, installed around 2016. Was running fine when we put the pool to bed last September, just opened pool, pool cleaner won’t run. Have moderate flow through the cleaner due to the circulation pump, but no boost. Can hear booster pump running, but quiet, opened impeller housing everything looks clean, bearings feel free, passages in impeller appear clear, impeller spins when motor powered. Suspect motor is running slow, any suggestions?