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Fuel lift pump not working (boiler will not come on)

    1. Check that the pump is getting electrical power by testing for power at the circuit breaker or fuse. Reset breaker or replace fuse if needed.
    2. Verify the electrical connections to the pump are intact and wires are not damaged or disconnected.
    3. Check for clogged fuel filters preventing flow to the pump inlet. Replace filter if dirty.
    4. Examine the pump couplings and shafts. Ensure they are intact and turn freely.
    5. Test the pump motor windings for open circuits or shorts using a multimeter. Replace motor if defective.
    6. Check for seized pump components or rust due to water ingress. Attempt to unstick or replace pump.
    7. Remove sediment or debris in the fuel oil storage tank that could be flowing into the pump. Filter or clean tank.
    8. Listen for pump motor hum indicating a locked rotor unable to turn. Attempt to turn shaft manually or replace if seized.
    9. If pump still fails to operate after checking these items, entire pump may need replacement by a qualified technician.
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