A14
Fondital Gas Valve Modulation Fault

Error A14, unit may run only at reduced power or shut down intermittently.

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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

Defective gas valve modulation coil, Loose gas valve connector, Incorrect gas valve calibration, Faulty control board output

How to Fix / Troubleshooting

Safety: Gas components must only be adjusted by qualified personnel. Turn off gas and power before touching the gas valve.

  • Visual inspection: Check the electrical connector on the gas valve for secure fit and no corrosion.
  • Reset appliance: Perform a reset and observe if the burner modulates smoothly when hot water demand changes.
  • Professional calibration: A certified technician should measure gas pressures and adjust or replace the gas valve according to Fondital specifications.
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Repair Difficulty

Professional Required 5/5

Required Part

Gas Valve
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