Baxi E168 Fault

Baxi E168 Fault

The Baxi E168 error code is displayed when there’s a general electrical fault within the boiler. This code is somewhat broad and can indicate a variety of electrical issues, ranging from temporary problems caused by external influences to more serious internal faults. The error is often related to inconsistencies in the electrical supply or issues within the boiler’s internal circuitry.

Causes of the E168 Error Code

  1. Power Supply Fluctuations: Sudden surges or drops in the home’s electrical supply can trigger this fault code.
  2. Boiler Overload: If the boiler’s electrical system is overloaded, it may shut down as a safety precaution, displaying the E168 error.
  3. Faulty Printed Circuit Board (PCB): The PCB is the heart of the boiler’s control system. If it’s faulty or damaged, it can lead to a range of electrical issues, including the E168 error.
  4. Loose or Damaged Wiring: Over time, wiring within the boiler can become loose or suffer damage, leading to electrical faults.
  5. External Controls or Sensors: Issues with external controls or sensors connected to the boiler can also cause electrical faults that result in the E168 error code.

Troubleshooting and Resolving the E168 Error Code

  1. Check the Power Supply: Ensure there are no issues with your home’s electrical supply. Look for tripped circuit breakers or blown fuses that might affect the boiler.
  2. Reset the Boiler: Sometimes, the issue can be resolved with a simple boiler reset. Refer to your boiler’s manual for the correct reset procedure.
  3. Inspect for Visible Damage: Safely check for any visible signs of damage to the boiler’s wiring or components. Do not attempt repairs yourself unless you are qualified to do so.
  4. Check External Controls and Sensors: If you have external controls connected to your boiler, ensure they are functioning correctly and securely connected.
  5. Consult a Professional: Given the potential complexity of diagnosing and repairing electrical faults, it’s advisable to contact a Gas Safe registered engineer. They can perform a detailed inspection to identify the root cause of the E168 error and carry out necessary repairs.
  6. Regular Maintenance: To prevent future electrical faults, ensure your boiler receives regular maintenance by a qualified professional. This can help identify and address minor issues before they lead to more significant problems.


The Baxi E168 error code signals a general electrical fault, which can be caused by a range of issues. While some basic checks and a reset can be attempted by the homeowner, diagnosing and fixing electrical faults typically requires professional intervention. Regular servicing and maintenance are key to ensuring the long-term reliability and safety of your boiler.