Crown Gas Leak / Incomplete Ignition

Boiler room smells strongly of gas when the boiler attempts to fire

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Leaking gas union at Crown gas valve, Cracked burner manifold, Failed gas valve not closing fully, Loose pilot or ignition assembly fittings (on older models)

How to Fix / Troubleshooting

Critical safety: If you smell gas, do not operate electrical switches, use phones, or create sparks. Evacuate the area, shut off the gas at the main shutoff if safe to do so, and call your gas supplier or emergency services from outside.

  • Do not attempt repairs: Gas leaks must be located and repaired by a licensed gas technician using proper leak detection equipment.
  • Ventilate: Open windows and doors to disperse gas if it is safe.
  • Tag boiler: Leave the Crown boiler off and tagged until it has been professionally inspected and tested.
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Repair Difficulty

Professional Required 5/5

Required Part

Gas Valve Assembly
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