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Hello, I'm very puzzled with an error I have on my turbomax plus 824E, I would really appreciate if you could share your thoughts. I have an intermittent F22 error. The pressure is around 1.4bar. The pump seems to be rotating ok: it's vibrating, rotating but the pump itself is always very...

Hi Guys, I've seen many precious information in here, but I'm kind of stuck, The boiler (vaillant turbomax plus ) shows an F22 error few times a day. The pressure gauge seems to be working well and indicates nominal pressure. (so I don't think it's actually a pressure problem) No problem in...