Boiler display shows LOCKOUT and burner will not fire; no heat or hot water.

Safety first: Turn off power to the boiler at the service switch and close the oil or gas shutoff valve before touching any wiring or burner components. Allow hot surfaces to cool.

Step-by-step checks:

• 1. Verify fuel supply: Confirm the oil tank is not empty (for System 2000 oil boilers) or that the gas supply valve is open and gas pressure is available. Reset any tripped oil safety valves if present.
• 2. Inspect the burner primary control: On Beckett, Carlin, or Riello burners used on Energy Kinetics boilers, locate the primary control (e.g., Beckett Genisys). If the red reset button is lit, press it only once. If the burner does not start or locks out again, do not continue resetting.
• 3. Check flame sensor: Remove and gently clean the cad cell (oil) or flame rod (gas) with a soft cloth. Reinstall securely and ensure wiring is tight.
• 4. Inspect ignition components: Check ignition transformer/igniter and electrodes (oil) or spark igniter (gas) for cracks, carbon buildup, or loose connections. Replace if visibly damaged.
• 5. Confirm venting and air: Make sure the flue is not blocked and that the burner has adequate combustion air. Clear any obvious obstructions.

When to call a technician: If the boiler re-enters LOCKOUT after a single reset, or if you smell fuel, see smoke, or hear unusual noises, stop and contact a qualified Energy Kinetics service technician. Combustion setup and primary control diagnostics require professional instruments.