Tip & How-To about Pentair Intelliflo Variable Speed Pump

Pentair Intelliflo display problems

I struggled with this for quite some time: the display of my 18 month old pump was completely blank but the keys where still responsive. I contemplated ordering a replacement part but the keyboard/display unit is about USD 600. Having figured out that I can still control the pump using my RS485 home automation interface I decided to open the display/keyboard unit. Couldn't be easier:

  1. Remove the 3 screws for the lid/cover
  2. Carefully peel the rubber keypad cover from the sides (comes of easily)
  3. Lift the keypad/display unit out
Having opened the actual unit I cleaned the contacts between the display and the PCB but this didn't solve the problem. I then took out the D9-connector and plugged it directly into the back. Screen worked !!! Turned out that the 2 screws holding the D9-connector where not tight enough and as a result there was a poor connection.




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