Hodedo51

screen showed flow alarm with 3 blinking lights. Removed filter elements, tried again , no difference. Cycled poer, no difference. Pulled panel and noticed that the circulation pump stays on for 15 seconds, and then shuts off for 5. Then repeats this cycle. Noticed the paddle on the flow sensor bouncing. Removed lead from flow sensor to the circuit board, and pump runs as normal. So, I either have worn impellers on the circ pump, and not enough flow is being put out to keep the switch de-activated, or I have a worn paddle or spring (or something) on the flow switch. Who's been there before? Thanks / Mark