Ideal Logic 35 Combi Boiler Problems

The Ideal Logic+ 35 Combi Boiler is known for its efficiency and reliability. However, like all machines, it can sometimes have issues. This article delves into some problems faced by Logic+ 35 users, and proposes potential solutions, offering a clearer understanding for homeowners and technicians alike.

Problem 1: Ignition Cutout and Noises

One user reported a peculiar issue with their Logic+ 35 boiler: upon turning on the hot water tap, the boiler attempted ignition but made a strange noise resembling a didgeridoo. The boiler failed to ignite, showing messages like “ignition cutout” and “check other appliances”. The boiler would try igniting again, but the same cycle continued.

Possible Solutions:

  • Check if the boiler case is sealed properly. Improper sealing might lead to air being sucked in, causing the weird noises and possibly affecting the ignition.
  • If the boiler has been serviced recently, ensure that all parts, especially the fan, have been reseated properly. Misalignment or improper seating can result in noises and malfunctions.

Problem 2: Failure to Ignite in Cold Conditions

It was noted that the failure to ignite seemed more pronounced during cold weather.

Possible Solutions:

  • Check the condensate pipe. In colder conditions, it’s not uncommon for the condensate pipe of combi boilers to freeze or get blocked. Ensuring the condensate pipe is clear and not frozen might alleviate the problem.

Problem 3: Issue While Using Combi Function

The problem seems to be most pronounced when the combi function is activated while the heating is running.

Possible Solutions:

  • Check for condensate blockage. If the heating runs, and the boiler produces more condensation than it can handle, it could affect the combi function. Ensuring proper drainage might help.
  • Check the trap, gas pressure, flue integrity, heat exchanger, jet and venturi, and burner assembly. If these components aren’t functioning properly, they might be the root cause of the issue.
  • In some cases, condensate can collect in the sump due to poor drainage. This can cause flame vibration and ignition lockout.

Problem 4: Ignition Issues Post Maintenance

After maintenance, where the ignition and detection probes were changed, the issue seemed to persist.

Possible Solutions:

  • It might be a good idea to check the electrical connections and ensure they are seated properly. Loose connections can cause erratic behavior in boilers.
  • An issue with the condensate trap being airlocked can also cause persistent problems. Ensure that after maintenance, the trap is refilled with water to prevent airlocks.

Conclusion

While these solutions offer a starting point for addressing issues with the Ideal Logic+ 35 Combi Boiler, always consult with a certified heating engineer for a thorough diagnosis and repair. Regular maintenance and prompt attention to any irregularities can ensure the longevity and efficient performance of your boiler.

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