Jandy Boiling or Delayed Ignition

Heater makes loud banging or popping noises during operation.

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.

Possible Causes

Scale buildup in heat exchanger, Delayed burner ignition, Incorrect gas pressure, Dirty burners

Safety first: Turn off power and gas. Do not continue to run a heater with loud banging.

Scale suspicion: If the heater is older or used with hard water, internal scale can cause water to flash to steam, creating popping noises. Have a professional descale the heat exchanger.
Burner cleaning: Dirty burners can cause delayed ignition and small explosions. A technician should remove and clean burners and check ignition timing.
Gas pressure: Have gas supply and manifold pressure checked and adjusted by a qualified technician.

Professional Required 5/5

Burner Assembly

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