A11
Ferroli
Gas Valve Control Fault
Error A11, unit may attempt ignition multiple times then lock out.
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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 coil, Loose gas valve connector, Faulty PCB gas valve driver, Incorrect gas valve adjustment
How to Fix / Troubleshooting
Critical safety: Work on gas valves must be done by a licensed gas technician. Do not attempt internal gas valve repairs yourself.
- 1. Visual check: With power off, inspect the gas valve body for signs of overheating, corrosion, or water ingress. Ensure the electrical connector is firmly seated.
- 2. Reset and observe: Reset the heater and listen for the gas valve click during ignition. If there is no click, the valve may not be energizing.
- 3. Professional testing: A technician should measure coil resistance, verify supply voltage from the PCB during ignition, and check gas pressures. If the valve or PCB is faulty, they must be replaced and combustion re-checked.
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Repair Difficulty
Professional Required
5/5
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