My Jbj Chiller is showing a F2 error what does this mean?
  • Description

F2 means the controller is not making good contact in your aquarium chiller. Somehow upon doing the maintenance the controller was moved or lost connection.

1.       Un-plug the chiller from the power outlet.

2.       Press down on the controller with both thumbs and pull towards you at the same time.

3.       The controller will pop out.

4.       Disconnect the 2 quick disconnects for 30 minutes (this will erase the memory chip)

5.       Plug the quick disconnects and reset and re-calibrate the chiller.