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F28 code in Vaillant boiler eco Tec plus 831, how do I fix it?

For no reason, an error F28 showed up on my boiler, I tried the to reset like the instruction book said, but goes back to F28. how can I fix it?. I use gas for cooking and it's fine, gas pressure is ok.

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I think you have the wrong category.

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SOURCE: vaillant eco tec pro 28

IF the weather is extremely cold, and you're getting F28, the external pipework may be blocked with ice. Warm up the external pipes (lag them if you can) - and now see if your boiler will re-ignite.

A friend fixed our condenser boiler with this tip - hope it helps you.

Posted on Jan 09, 2010

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Vaillant eco tec pro 28


IF the weather is extremely cold, and you're getting F28, the external pipework may be blocked with ice. Warm up the external pipes (lag them if you can) - and now see if your boiler will re-ignite.

A friend fixed our condenser boiler with this tip - hope it helps you.

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