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- 30 Jan 2021
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I need help! My boiler keeps displaying F57 Monitoring program. When it does it shuts down and doesn't do anything which is a right pain as I'm regularly not there for a few days at a time. The fault is cleared by a simple reset and the bailer fires up fine. It then works for a few hours with no problems, sometimes it will start making a loud juddering sound(sorry that the only way I can describe it) repeatedly 4 or 5 times. According to the manual it's a highly corroded electrode. It didn't looks that bad but was only £20 for a new one, So I changed it, that didn't work so I changed the cable as well. That didn't work so I was advised it was probably a faulty PCB board. I've changed that and it's still doing exactly the same. Where do I go next? Please help.