Generator will not start in AUTO or MANUAL mode; control panel shows E01 and start sequence aborts after several cranking attempts.

Safety first: Set the generator to OFF, open the main AC breaker to the house, and disconnect the negative battery cable before touching any wiring. Never work on the unit while it is cranking or running.

• Check battery voltage: Using a multimeter, measure DC voltage at the Pulsar generator battery terminals. A healthy fully charged 12 V battery should read about 12.6–12.8 V with the unit off. If below 12.2 V, charge or replace the battery.
• Inspect battery connections: Clean any white/green corrosion from the battery posts and cable lugs using a wire brush. Tighten the battery terminals firmly; loose connections can cause E01 no-start.
• Check starter operation: With the unit in MANUAL and observing from a safe distance, attempt a start. If you hear a click but the engine does not crank, the starter solenoid or starter motor may be faulty. If there is no sound at all, verify the battery fuse and starter relay in the Pulsar control panel.
• Inspect ground and chassis connections: Confirm the engine block ground strap and frame ground are tight and free of rust.
• If the engine cranks but does not fire: E01 can also be triggered by extended cranking. Check fuel level, fuel shutoff valve, and verify that the LPG/NG supply is open and pressure is adequate.

If the starter motor or solenoid is confirmed defective (no crank with good battery and power at the solenoid), replacement of the starter assembly is recommended and may require a qualified technician.