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Symptoms same a s always: 'Fault on Pump or Low System Pressure' light flashing. To restart I set a tap running, switch selector to off, then back to HW and its running again. Currently occurring 1 to 3 times a day, depending on usage. Very frustrating! Seriously considering hand in pocket time. :?

Apologies - The 'Nothing' means that it had cut out again. Never noticed it occur in CH mode, although the house is so well insulated we only ever use CH a couple of times a year.

Just put the lid back on after monitoring faultless behaviour. Went to wash hands and..............Nothing. Arghhhhhhhhhhhhhhh! Thanks for the advice. I'll have a look at the diaphragm and sensor scenario tomorrow. Will I need an engineer for replacing them?

Hi, Both suspects appear to be behaving correctly at the moment, BUT it hasn't faulted today, (yet). I did notice Baxpoti that the air vent is missing the top screw. Should it be in there for normal running? Andynet

Thanks for that. I'll try those suggestions tomorrow and let you know if I have any luck. :wink:

Hi. I have enjoyed the forums here very much and hope that some of you clever folk can give me a clue on the following subject. We have a 5 year old Baxi combi 105 which has the annoying habit of cutting out, (usually when you are sat in the bath halfway through washing your hair). The 'Fault...