Troubleshooting and fixing fault code L06 “False Flame Lockout”

on your Ideal Logic2+ Combi Boiler

Skip To:

Your home’s heating system plays a crucial role in keeping you comfortable during the cold winter months, and the Ideal Logic2+ Combi Boiler has been a popular choice for many homeowners. However, like any complex appliance, boilers can experience faults from time to time. One such issue is the L06 fault, also known as the False Flame Lockout. In this blog post, we will explore what this fault means, discuss the red flags that indicate its presence, provide troubleshooting tips, and outline the actions both homeowners and engineers can take to resolve the issue.

What is a False Flame Lockout?

The L06 fault, or False Flame Lockout, is a common issue encountered with Ideal Logic2+ Combi Boilers. It occurs when the boiler’s flame sensing mechanism fails to detect a flame when there is, in fact, one present. As a safety precaution, the boiler will shut down, resulting in a loss of heating and hot water.

L06 Red Flags!

The boiler repeatedly fails to ignite and quickly shuts down.

The boiler displays the L06 fault code on the control panel or digital display.

The heating and hot water supply are intermittently disrupted.

Unusual noises, such as banging or gurgling, coming from the boiler.

Fluctuating or unstable water temperature

Unresponsive control panel

Increased energy consumption

Visible damage or leaks

Strange odours

Check out what your allowed to do:

L06 Troubleshooting Tips:

Check the condensate pipe: The condensate pipe carries away excess water produced during the boiler’s operation. If this pipe becomes blocked or frozen, it can cause the boiler to shut down. Inspect the pipe for any obstructions, and if necessary, thaw any frozen sections or clear any debris.

Verify gas supply: Ensure that the gas supply to the boiler is uninterrupted and the gas valve is fully open. If you suspect a gas supply issue, contact your gas provider to investigate further.

Check ventilation: Inadequate ventilation can cause the boiler to shut down. Ensure that the boiler’s ventilation system is free from blockages or obstructions and that air can flow freely to and from the boiler.

Reset the boiler: Try resetting the boiler by turning off the power supply to the boiler for a few seconds and then turning it back on. This simple reset may clear any temporary fault that caused the False Flame Lockout.

Inspect the ignition components: Examine the ignition components, such as the spark electrode and ignition leads, for any signs of damage or wear. Clean or replace these components as necessary to ensure a reliable ignition process.

Check the flame sensor: The flame sensor plays a crucial role in detecting the presence of a flame. Inspect the flame sensor for any dirt, debris, or corrosion that may be interfering with its proper functioning. Clean the sensor carefully using a soft cloth or seek professional assistance if needed.

Ensure proper boiler pressure: Check the boiler’s pressure gauge to ensure it is within the recommended range. Low pressure can cause the boiler to lock out. If the pressure is too low, consult your user manual to learn how to repressurize the boiler or contact a qualified engineer for assistance.

Consult the user manual: Your boiler’s user manual is a valuable resource that provides specific troubleshooting steps and guidance for dealing with various faults. Refer to the manual for any manufacturer-recommended troubleshooting procedures for the L06 fault.

What can you do as a Homeowner?

As a homeowner, there are a few actions you can take if you encounter the L06 fault:

  • Check for simple issues: Before calling for professional help, perform some basic checks. Ensure that the power supply to the boiler is intact and that other gas appliances in your home are functioning correctly. Additionally, check the boiler’s pressure gauge to see if it falls within the recommended range.
  • Reset the boiler: Try resetting the boiler by turning off the power supply for a few seconds and then turning it back on. This may help clear any temporary fault and restore normal operation. However, if the fault recurs, it is best to seek professional assistance.
  • Monitor the fault code: Take note of the specific fault code displayed on the control panel or digital display of your boiler. This information can be helpful when contacting a qualified engineer for repairs, as it gives them a starting point for diagnosing and addressing the issue.
  • Document the symptoms: Keep a record of the symptoms you observe when the L06 fault occurs. Note down any patterns, such as specific times of the day or heating demands that trigger the fault. This information can assist the engineer in identifying the underlying cause more efficiently.
  • Schedule a professional service: If the L06 fault persists or if you are unable to resolve the issue on your own, it is advisable to contact a qualified engineer or the manufacturer’s technical support helpline. They will have the expertise and tools to diagnose the problem accurately and carry out the necessary repairs.

What to do as a Qualified Gas Engineer?

  • Conduct a thorough assessment: Begin by inspecting the boiler and its components, including the flame sensing mechanism, ignition system, burner, and related parts. Evaluate their condition and check for any visible signs of damage, wear, or malfunction.
  • Clean or replace faulty components: If you identify any faulty or dirty components during the assessment, such as a malfunctioning flame sensor or a clogged burner, clean or replace them as necessary. Cleaning may involve removing soot, debris, or deposits, while replacement may be required for damaged or worn components.
  • Verify gas supply and pressure: Check the gas supply to the boiler to ensure it is properly connected and that the gas valve is fully open. Measure the gas pressure to confirm it falls within the recommended range for the boiler’s optimal operation. 
  • Check ventilation and flue system: Inspect the ventilation and flue system to ensure they are free from blockages or obstructions. Verify that there is sufficient air supply for combustion and proper exhaust of gases, as inadequate ventilation can contribute to the False Flame Lockout.
  • Perform diagnostic tests: Utilize diagnostic tools and equipment to conduct tests on various components of the boiler. These tests can help you assess the performance of the ignition system, gas valves, pressure sensors, and other relevant parts, assisting in identifying the root cause of the fault.
  • Reset and reconfigure the boiler: If necessary, perform a reset of the boiler to clear any temporary faults. Additionally, check the settings and configurations of the boiler’s control system to ensure they are properly calibrated and aligned with the manufacturer’s specifications.

FAQ's

While the L06 fault itself is not dangerous, it is a safety feature designed to prevent potential hazards. If you encounter this fault, it is crucial to address it promptly to ensure the safe operation of your boiler.

While some basic troubleshooting steps can be performed by homeowners, it is generally recommended to contact a qualified engineer for boiler repairs. They have the necessary expertise and equipment to diagnose and fix the issue safely.

Regular maintenance and servicing of your Ideal Logic2+ Combi Boiler are essential to prevent faults like the L06. Schedule annual maintenance visits with a qualified engineer to ensure your boiler is in good working condition and to catch any potential issues early on.

Need help finding an engineer?

Book with us today for reliable and efficient service. If you need help getting an engineer for your heating or plumbing needs, Click the link below to schedule an appointment. Our experienced professionals are here to assist you.

Experience exceptional service that exceeds your expectations.

Need a boiler quote

Get a free quote, done today!

If you would like some further help. Please don’t hesitate to contact one of our dedicated staff members, they will give you the best advice they possibly can to help. 

Call us on: