Generator shuts down and displays E12 after running for a short period

Safety first: Turn the controller to OFF, open the main AC breaker, and disconnect the negative battery cable. Avoid open flames or sparks near fuel.

• Check fuel level: Visually inspect the fuel tank level. If low, add the correct fuel type recommended by Westinghouse and avoid overfilling.
• Inspect fuel level sender: Locate the level sensor on the tank (often a float-type sender). Check wiring connections for corrosion or looseness.
• Test sender (if accessible): With a multimeter, measure resistance across the sender terminals while moving the float. Resistance should change smoothly. Replace the sender if readings are erratic or open.
• Clear code: After refueling and verifying connections, reconnect the battery, clear E12 by cycling the controller, and test run the generator.