Ignition and lockout faults
The boiler may fail to light or shut down after trying to start.
Fault code advice
Modern boilers use error codes to help identify faults, but the code is only the starting point. Bay Plumbing & Heating can diagnose boiler fault codes across Torquay, Paignton, Brixham and the wider Torbay area.

A boiler error code can point towards ignition faults, fan issues, sensor faults, pump problems, pressure loss, condensate issues or flue-related concerns. The code helps guide diagnosis, but parts should not be replaced until the appliance has been checked properly.
Write down the exact fault code, boiler make and model, and what happened before the fault appeared. If the boiler repeatedly locks out, do not keep resetting it without arranging boiler repair advice.
Worcester Bosch, Vaillant, Baxi and Ideal boilers each use their own fault-code systems. We can use the brand, model and symptoms to explain the likely route for checks and repair advice.
Fault codes often relate to lockouts, ignition issues, low pressure, overheating, circulation problems or condensate concerns. The code helps point the engineer in the right direction, but symptoms, pressure readings and appliance checks are still needed before deciding on a repair.
The boiler may fail to light or shut down after trying to start.
Low pressure, pump issues or poor flow can stop the boiler operating normally.
Blocked condensate routes or poor circulation can trigger protective shutdowns.
Different manufacturers use different fault-code formats, so a Worcester Bosch code may not mean the same thing as a Vaillant, Baxi or Ideal code. Send the exact code and boiler model when you enquire so the first reply can be more useful.
Customer feedback is useful because it shows how the work feels in real homes, not just how the service is described on the website. Reviews for Bay Plumbing & Heating regularly mention clear explanations, tidy work and reliable communication.
Good fault-code diagnosis should explain what the code suggests, what has been checked and why a repair is recommended before parts are replaced.
Reviews across Google, Which? Trusted Traders and Checkatrade support the boiler-first local reputation.
Customers often value knowing whether a service, repair or replacement is the sensible route.
Customer feedback
Real quotes from Checkatrade, Trustpilot, Which? Trusted Traders and MyBuilder — plus Google for live scores — published here as lightweight, crawlable HTML (not embedded widgets).



Very thorough and discussed his findings as he went along. Offered help and advice. Very personable and professional.
Boiler diagnostics
Verified excerptSean is very helpful and responsive. He does a great job.
Heating / call-out
Postcode area TQ3 · Torbay area
Verified excerptProbably the most thorough service our boiler has had since installation. The attention to detail regarding safety was really appreciated.
Boiler servicing
Postcode area EX8 · Torbay areaFAQs
A single reset may be allowed by the boiler instructions, but repeated resets are not a fix. If the fault returns, the boiler needs diagnosis because a safety device or component may be stopping it for a reason.
No. A code can be caused by pressure, controls, sensors, ignition, circulation or external conditions. Good diagnosis checks the cause before assuming a replacement part is needed.
Yes. Send the code, boiler brand and model if known. It helps make the first reply more useful and can indicate whether parts or a diagnostic visit may be needed.
A lockout means the boiler has shut down because it has detected a fault or unsafe operating condition. It may be linked to ignition, pressure, overheating, fan, flue, pump or sensor issues. If it keeps happening, arrange proper diagnosis.
No. Fault codes are not a DIY repair instruction, and gas appliances should not be opened or repaired by homeowners. The code is only one part of the diagnosis.
Ready to book?
Send the code, boiler make and symptoms so Bay Plumbing & Heating can advise the next step.