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Repair guides and support for gas and electric hot water tanks, boilers and household heat exchangers.

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No hot water in boiler, keeps flashing F5?

My furriol boiler keeps flashing F5, and am only getting hot water for a couple of seconds at a time, will i need to get a new boiler, or can this be fixed?

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Have you switched boiler off and re-pressurised the system?

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Yes turned it off and turn it back on left it for a period of time

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Solución elegida

Lindsey, not sure what boiler you have, the only info I got is for a Ferroli boiler. Again, there are numerous of those. If you can a model number would be helpful. On the Ferroli Optimax the F5 error code is:

Fan problem

• Tachometer signal

interrupted, fan connection

• Fan damaged, debris in fan

Possible Solution

• Check the wiring and fan

• Check the fan, clean debris

Hope this helps you to get started. Good Luck.

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F5 fault What a nightmare! I removed the fan and checked the fan using a plugged twin cable attached to the live and neutral point of connection on the fan itself. After discovering it was seized I had to buy another, that was the easy part!!!

Installation was a success but the fan still wouldn’t work it seems to be a PCB problem.

My advice to homeowners and engineers You spot a ferroli run away!

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