Troubleshooting
Electrical
No Power
▪ Check power to dispenser/pump unit.
▪ Check Power LED on processor board.
▪ Check connections.
▪ If Power LED is off, check for a short on intrinsic devices by unplugging each device
until the Power LED lights up.
▪ Check Power Supply fuses.
▪ Replace C5000 if fault not found.
▪ Check end of sale indicator in the pump number setting on the parameter switch to
determine what ended the fill.
▪ Check Diagnostics LED on the processor board to see if there is a software issue.
▪ If Diagnostic LED is off, check that memory chips are firmly in their sockets.
▪ Replace C5000 if LED is on after repowering unit.
▪ Check Triac fuse.
▪ Check all pump motor connections.
▪ Check pump motor.
▪ Check wiring.
▪ Select a spare High Current Solid State Relay if the above checks are okay.
▪ On the K-Factor board, if the output LEDs are off, check nozzle switch, the nozzle
switch is working if the Diagnostic LED flashes faster when switch is on.
▪ Check Display connection.
▪ Replace C5000 if fault not found.
▪ Check nozzle switches are releasing, the nozzle switches are working if the Diagnostic
LED on the K-Factor board flashes faster when switch is on.
▪ If Output LEDs are off, select a spare High Current Solid State Relay.
▪ Replace C5000 PCB if fault not found.
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