Controller displays F19 – Start failure after maximum crank attempts

Safety first: Disable automatic start and allow the starter to cool between attempts to avoid damage.

• Check cranking speed: Observe engine cranking. If slow, test batteries and starter connections. Clean and tighten as needed.
• Verify fuel supply: Confirm fuel valves are open, filters are not clogged, and there is adequate fuel in the tank.
• Start circuit inspection: Check the start relay, starter solenoid, and wiring from the MTU controller. Listen for relay operation during a start command.
• Controller settings: Verify crank duration, rest times, and number of attempts in the controller configuration match MTU recommendations.
• Check for active shutdowns: Ensure no latched shutdowns (e.g., low oil pressure) are preventing start. Clear any such alarms after resolving root causes.
• Test start: After corrections, clear the F19 alarm and perform a manual start.