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Worcester Bosch EF Error Code

Worcester Bosch EF Error Code – Fan Speed or Communication Fault Welcome to BeFix — Reliable. Local. Gas Safe. In this video, we’ll take a look at the Worcester Bosch EF error code — a warning that your boiler’s fan isn’t communicating properly with the main control board. Let’s break down what it means, what can cause it, and when you’ll need a Gas Safe engineer to get things running again.” The EF fault indicates a problem with the fan speed or the signal the fan sends to the boiler’s PCB — the printed circuit board that controls ignition and combustion. In simple terms, your boiler’s fan is responsible for pulling in fresh air and expelling burnt gases safely through the flue. If the boiler can’t confirm the fan is running correctly, it will shut down for safety. You might notice your boiler trying to start up, clicking, and then cutting out again — that’s usually a sign the fan isn’t doing its job properly. Several things can cause the EF fault code to appear: • A faulty fan motor that’s seized or slow to start. • Loose or damaged wiring between the fan and the PCB. • A blocked or restricted flue, preventing the fan from spinning freely. • A faulty tachometer on the fan not sending the right speed signal back to the board. • Or, in some cases, a failing PCB that can’t read the signal even when the fan is fine. Because this fault affects the combustion process, it’s mostly one for a Gas Safe engineer. However, you can do a few basic checks: 1. Reset your boiler once to rule out a temporary fault. 2. Listen carefully when it tries to start — if you don’t hear the faint hum of the fan, that’s a clue it may be stuck or not receiving power. 3. Inspect your flue terminal outside — make sure it’s not blocked by leaves, snow, or debris. 4. Avoid repeated resets — if the boiler keeps locking out, it’s protecting you from unsafe operation. If the EF code remains, it’s time for BeFix to step in. We’ll test the fan voltage and speed feedback, check the PCB signal, and ensure there’s no obstruction in the flue. If your fan needs replacing, we’ll source the correct part and fit it to Gas Safe standards, ensuring your boiler runs quietly and efficiently again. “Don’t ignore fan faults — they’re vital for safe combustion. If your Worcester Bosch boiler shows an EF error, contact BeFix. ☎️ 020 80 58 42 41 | 📱 WhatsApp 07776662627 | 🌐 befix.co.uk — Reliable. Local. Gas Safe.”