| Code | Display Message | Meaning | Manual Solution | | :--- | :--- | :--- | :--- | | | Press Low | Pump ran full t-on but never reached low pressure switch. | Refill reservoir. Check for air lock in suction line. Prime the pump via the TEST button. | | E-02 | Press High | Pressure exceeded P-05 limit in under 2 seconds. | Frozen injector or blocked line. Manually crack a fitting near the controller to relieve pressure. | | E-04 | Level Low | Low level sensor in reservoir is dry. | Refill with Castrol specified grease only. Mixing incompatible thickeners (lithium vs. calcium) causes E-07 later. | | E-07 | Cycle Fail | Controller sent "Go" signal but no injector cycled. | Check the main solenoid valve coil for resistance (ohm meter: 50-200 ohms). Replace coil. | | E-12 | Motor Overload | Thermal relay tripped. | Pump motor seized. Wait 20 min for reset. If recurring, replace pump head. |
The ASC typically requires an external 24VDC power source, often provided by a LubeCon power system or central pumping station. castrol lubecon advanced system controller manual