Troubleshooting and Fixing Fault Code F86 "Underfloor Heating Contact Fault"

on your Glow-Worm EasiCom Boiler

Underfloor heating provides efficient and comfortable warmth to your home. If you encounter an F86 fault code on your Glow-Worm EasiCom Boiler, it indicates an issue with the underfloor heating contact. In this blog post, we will explore the details of this fault, identify warning signs, provide troubleshooting tips, and guide homeowners and engineers on how to effectively resolve the issue.

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Understanding the Underfloor Heating Contact

The F86 fault code on the Glow-Worm EasiCom Boiler points to a problem with the underfloor heating contact. This contact is responsible for controlling the operation of the underfloor heating system. When a fault is detected in the contact, the boiler triggers the F86 fault code as a safety precaution.

F86 Red Flags!

If you suspect an F86 fault on your Glow-Worm EasiCom Boiler, watch out for the following warning signs:

  1. Displayed error code: The boiler’s display shows the F86 fault code or an associated error message.
  2. Underfloor heating not working: The underfloor heating system fails to provide heat to your home, even when the boiler is operating.
  3. Unresponsive underfloor heating controls: The controls for the underfloor heating system may not respond or function as expected.
  4. Error code display on external control: If your system includes an external control unit, it may also display an error code related to the underfloor heating contact fault.

Check out what your allowed to do:

Troubleshooting Tips:

If you encounter an F86 fault on your Glow-Worm EasiCom Boiler, try the following troubleshooting tips before seeking professional assistance:

  1. Check the underfloor heating contact wiring: Inspect the wiring connections related to the underfloor heating contact. Ensure they are securely connected and undamaged. Tighten any loose connections if found.
  2. Verify power supply to the underfloor heating contact: Check if the underfloor heating contact is receiving power. Ensure there are no issues with the circuit breaker or fuse connected to the contact. Reset the circuit breaker or replace the fuse if necessary.
  3. Test the underfloor heating contact: Use a multimeter or follow the manufacturer’s instructions to test the functionality of the underfloor heating contact. Verify if it is opening and closing as intended. Replace the contact if it is faulty or not functioning correctly.
  4. Check the underfloor heating controls: Inspect the controls for the underfloor heating system. Ensure they are functioning properly and communicating with the boiler. Reset the controls or reprogram them if needed.
  5. Contact customer support or a qualified engineer: Reach out to Glow-Worm’s customer support or a qualified engineer for further guidance. They can provide assistance over the phone or via email and may have additional troubleshooting steps specific to your boiler model and the F86 fault.

What can you do as a Homeowner?

As a homeowner, you can take the following steps to address the F86 fault on your Glow-Worm EasiCom Boiler:

  1. Perform basic troubleshooting: Follow the troubleshooting tips mentioned above to see if you can resolve the issue independently. Check the underfloor heating contact wiring, verify the power supply, test the contact’s functionality, check the underfloor heating controls, and contact customer support or a qualified engineer for assistance.
  2. Schedule a service visit: If the issue persists or you are unable to resolve it on your own, consider scheduling a service visit with a qualified engineer. They can diagnose the problem accurately and implement the necessary repairs or replacements of the underfloor heating contact or associated components.
  3. Check warranty coverage: Review your warranty documentation or contact Glow-Worm customer support to determine if the F86 fault is covered. If it is covered, the manufacturer may arrange for a technician to address the issue at no cost to you.
  4. Preventive measures: To prevent future underfloor heating contact faults, ensure regular maintenance of the underfloor heating system. Clean and inspect the contact regularly, and address any issues promptly to maintain its proper functioning.

What to do as a Qualified Gas Engineer?

As an engineer, follow these steps to diagnose and resolve the F86 fault on the Glow-Worm EasiCom Boiler:

  1. Inspect the underfloor heating contact wiring: Verify the wiring connections related to the underfloor heating contact. Ensure they are securely connected and undamaged. Repair or replace any damaged or faulty wiring.
  2. Test the underfloor heating contact: Use a multimeter or follow the manufacturer’s instructions to test the functionality of the underfloor heating contact. Verify if it is opening and closing as intended. Replace the contact if it is faulty or not functioning correctly.
  3. Check the underfloor heating controls: Inspect the controls for the underfloor heating system. Ensure they are functioning properly and communicating with the boiler. Reset the controls or reprogram them if needed.
  4. Verify power supply to the underfloor heating contact: Check if the underfloor heating contact is receiving power. Test the circuit breaker, fuse, or any relevant electrical connections to ensure they are functioning correctly.
  5. System evaluation and testing: Conduct a comprehensive evaluation of the underfloor heating system to ensure there are no additional issues affecting its operation. Test the boiler’s communication with the underfloor heating controls and verify proper heating performance.

FAQ's

It is not recommended to continue using the boiler with the F86 fault, as it indicates a problem with the underfloor heating contact. Operating the system with a faulty contact can lead to unreliable or non-functioning underfloor heating. It is best to address the issue promptly.

The time required to resolve the F86 fault depends on the underlying cause and the expertise of the engineer. In most cases, it can be resolved during a single service visit.

Warranty coverage varies depending on the manufacturer and the specific terms of your warranty agreement. Check the warranty documentation provided by Glow-Worm or consult customer support to determine if the F86 fault is covered.

Conclusion

Remember, if you are unsure about any troubleshooting steps or lack the necessary expertise, it is always advisable to consult a professional engineer or contact customer support for assistance.

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