Ideal showing F3 in Darlaston? The boiler could not confirm the fan speed, so it will not light. What to check outside, and why the rest is an engineer job.
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Listen as the boiler tries to start. A rattle, whine or no fan sound at all tells the engineer a lot.
Check the flue outlet on the wall or roof for anything blocking it. Look for nests, plants or rubbish. Look only. Do not reach in.
One reset rules out a glitch. If F3 comes back, leave it and book a visit.
The fan or its wiring, followed by a combustion check to make sure the boiler is burning cleanly.
A fan swap is usually one visit of one to two hours, if the part is on the van. The combustion check at the end adds a short while but it is worth having.
A photo of the display and the model name. Tell us what the boiler sounds like at start-up and where the flue leaves the house.
F3 on an Ideal is a fan fault. The fan pushes the waste gases out through the flue. The boiler will not fire until it knows the fan is running at the right speed.
A worn fan, a loose connection or a blocked flue can all cause F3.
Apart from checking the flue terminal outside and a single reset, this is inside-the-case work for a gas engineer. Check the manual for your model. In Darlaston's terraced streets the flue often exits close to a neighbour, so keep that area clear.
No. The boiler has refused to light without a working fan, which is safe. If you smell gas, get outside and call 0800 111 999.
It drives the fumes out through the sealed flue. No confirmed fan, no flame.
A fan is a single part on most models. The engineer can advise once they have seen the rest of the boiler.
Whether the fan, the wiring or the flue is the cause, and whether the part is in stock. The engineer confirms it first, then quotes for it.
A blocked terminal is cleared and the boiler is tested again. If the flue itself is damaged or badly routed, the engineer explains what needs to change. Nothing about the flue is guessed. It is checked and shown to you.
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