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Had exactly the same part fail on monday. Got home to find water pouring out of the bottom of the boiler where the saniblock had split in the same place as your's. I set about dismantling the part, after maybe an hour and a search for torx bits (3 of these screws underneath the saniblock and one...

hi nickso cheers for the reply I did just that late last night. went to bed and tried it this morning and it fired straight up. All seems ok now. I am now considering new boiler as this is the third thing to go in the last two years. 1st was condensing chamber 2nd was flow sensor and now the...

Hi Guys new on here and need help I have a glowworm 30cxi boiler which today flooded my bedroom after the monoblock split. I acquired a new part and replaced it. All seemed well, i repressurised the system but all that happens now is the pump runs but no ignition of the boiler. No fault codes...