📹 Profitec Pro 500 PID: Replace PID Relay Updated January 11, 2022 18:11 Learn how to replace a PID relay on a Profitec Pro 500 PID espresso machine. Profitec Pro 500: PID Relay Replacement Diagnosing PID Relay Issues (00:00) Parts Required (02:00) Remove Housing & Unplug Machine (02:21) Tools Required (02:49) Remove Relay (03:10) Wiring Tour (04:01) Remove & Reattach Wires (04:47) Apply Heat Transfer Compound (05:24) Install Relay (06:25) Plug In, Power On, Test (07:43)