📹 Profitec Pro 500 PID: Flow Issues Updated February 17, 2022 16:35 Learn how to diagnose and fix flow issues on the Profitec Pro 500 PID espresso machine. Profitec Pro 500 PID How to Diagnose and Fix Flow Issues Introduction (00:00) Green Light On, Orange and PID Off (00:50) Reservoir Water Sensing (01:30) Test w/Magnet (01:52) Reservoir Float (02:50) Pump Chattering Noise (05:30) Reservoir Valve (06:30) Reservoir Feed Line & Filter (07:17) Force Priming (08:50) Pro Tip - Priming (09:50) Testing Flow Rate (10:30) E61 Mushroom Valve (13:18) Mushroom Valve Types (15:30) E61 Particle Filter (16:35) Mushroom Stacked Nut (18:05) Mushroom Flow Control (19:55) Flow Test w/Flow Control (21:30) Mushroom Parts E61 Internals (22:50) Install Mushroom (25:15) OPV Valve & Return (27:55) Non-Return Valve (28:50) Grinding Chirping Sound (29:35) OPV Valve Clean (30:50) Blockage Between OPV and Boiler (31:40) Scale in Heat Exchanger (32:45) No Flow from Hot Water Tap (34:00) Test Solenoid and Downstream (34:40) Valve Tree Remove for Descale (37:10) Testing Solenoid Valve (38:35)