error code F27 on Vaillant ecotec pro 24 pcb board replaced and fixed.

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Отопление и инновации
Wanted to share this video with any one that has a vaillant ecotec pro 24 with error code F27. Be careful to check the serial code as there are 2 types of pcb for this model a 2012 and pre 2012 model. Mine is the 2012 model serial number 0020108264. The pcb board I bought off ebay for £50 reconditioned comes with 1 year warrenty. I replaced the pcb board and it fixed the problem. Hopes this helps any one else with the same problem.

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