STS pump power

Pump switch in ON position?

Turn ON pump

D

Resettable fuse in ON position?

Turn ON fuse

R. fuse tripping/heating/no continuity

Replace the resetable Fuse

Port 2 and 3 PCBs firmly inserted

Firmly insert the PCBs

Pump relay signal >= 12V on port 3 PCB during dispense

Replace SDC

Pump relay signal >= 12V

Replace pump relay signal cable

Pump relay clicks

Replace pump Relay

Resolved