16
Biasi Gas Valve Control Fault

Error 16; fan runs but ignition does not occur, or ignition is delayed.

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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

Faulty gas valve coil, Loose gas valve connector, PCB not sending valve signal, Gas valve stuck closed

How to Fix / Troubleshooting

Safety: Turn off gas at the isolation valve and disconnect power before touching the gas valve. Only licensed gas technicians should adjust or replace gas valves.

Steps (visual/user level):

  • Check gas supply: Confirm that other gas appliances work. If not, contact your gas supplier.
  • Inspect connector: Ensure the electrical plug on the gas valve is firmly attached and not damaged.
  • Reset and test: Restore power and reset the heater. Listen for the click of the gas valve during ignition. Absence of a click suggests valve or PCB fault.

Note: Do not attempt to dismantle or adjust the gas valve yourself. Contact a qualified Biasi service engineer for diagnosis and replacement.

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Repair Difficulty

Professional Required 5/5

Required Part

Gas Valve Assembly
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