[dvldoc]

Check your pump and make sure it's grounded properly, Also make sure the blue wire is still connected to the pump, The Yellow light comes on at 95% of the full set point. That is a normal operation of the controller

The second thing to check is to see if you have air in the line, The pump cannot clear air past the checkvalve so Prime the pump with the blue wire disconnected and the hose disconnected from the nozzle holder. Let if flow for about 5 to 8 secons.