Generator display shows E11 (Low AC Voltage) and the unit may continue running but transfer switch does not engage.

Safety first: Open the generator output breaker and isolate the unit from the building before testing voltage. Use a properly rated multimeter.

• Measure output voltage: With the generator running in MANUAL and no load, measure line-to-line and line-to-neutral voltage at the output lugs. Compare to Pulsar specifications (typically ~240/120 V). If significantly low, proceed.
• Inspect AVR connections: Shut down the unit and disconnect the battery. Locate the AVR inside the alternator housing or control compartment. Check that all spade connectors and plugs are tight and free of burn marks.
• Check stator leads: Inspect the stator output leads where they connect to the terminal block. Tighten any loose screws and look for discoloration.
• Verify engine speed: If the engine is audibly slow or surging, address governor and fuel issues first, as low RPM will cause low voltage.

If voltage remains low with correct engine speed and secure wiring, the AVR or stator is likely defective. Replacement of these components should be done by a qualified technician.