Control shows HARD LOCKOUT; burner will not attempt to start until manually reset at the control.

Critical safety warning: Do not repeatedly reset a burner in HARD LOCKOUT. Unburned fuel can accumulate and cause a dangerous puff-back or explosion. If you smell strong fuel odors, leave the area and call a professional immediately.

• 1. Single reset only: Press the reset button on the burner primary control or Energy Manager only once. Observe whether the burner starts and runs smoothly.
• 2. Check for obvious issues: Confirm that the emergency shutoff switch is on, the service switch is on, and the circuit breaker is not tripped. Verify that the oil tank has fuel or that gas supply is on.
• 3. Inspect vent and air: Look for blocked chimney, vent pipe, or intake. Clear snow, nests, or debris if safely accessible.

Do not attempt further resets or internal burner adjustments. HARD LOCKOUT usually indicates a serious combustion or control problem that must be diagnosed with proper test equipment by an Energy Kinetics-trained technician.