E14
Atlantic
Modulation / Gas Valve Control Fault
Boiler shows E14, often associated with frequent on/off cycling and unstable temperatures.
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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 modulation coil, Loose gas valve connector, Control PCB output fault, Incorrect gas valve calibration
How to Fix / Troubleshooting
Safety: Gas valve work must only be carried out by a certified gas technician. Do not attempt adjustments yourself.
- Reset the boiler: Perform a reset and observe operation. If the burner lights but immediately shuts down or surges, modulation may be faulty.
- Check for external gas issues: Confirm other gas appliances operate normally. If they also have issues, contact your gas supplier.
- Professional diagnosis: A technician will measure modulation signals from the PCB, test the gas valve coil resistance, and adjust or replace the gas valve as per Atlantic procedures.
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Repair Difficulty
Professional Required
5/5
Required Part
Modulating Gas Valve
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