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Pump head finally removed, courtesy of a friend with hands stronger than mine... and even HE had difficulty turning the screws, WITH the aid of the mechanical leverage on the allen key (beat you to that, I had already tried with the extra leverage, and, yes I do happen to own a set of "T" allen...

Tony, You are entirely correct ... I don't fix boilers, I'm just a lowly mechanical design engineer! And I greatly appreciate all the advice you are giving. (But please don't assume that just because I can't get the pump head off that I have used female logic and eliminated that as being the...

Hi, Tried to remove the pump head this morning, unfortunately, it turns out that my hands are not strong enough to undo the hex head bolts that hold the head to the body! Think they've probably been overtightened a tad...! Primary circuit refilled back to a little under 1.5bar (not sure what...

Thanks Tony, I'll remove the pump head and check that. Not sure about being able to SAFELY check the torque though - don't know if I'm THAT brave! Thinking about it, the pump seems to operate just fine when running the CH (or does it not need to provide quite so much pressure for CH as for...

Many thanks for the speedy responses! namsag, With the microswitch away from the pushrod assembly, and the water flow on, the burner doesn't even attempt to fire when the switch is operated manually. It only fires when the switch is manually operated (i.e. with no water flow). I'm guessing...

Hi, I'm hoping someone here can help me, I'm ALMOST at the end of my tether! I'm having problems with my 4 year old Baxi 105e (it's NOT the "instant" version) - the central heating works just fine, but, as of Christmas day (well, it WOULD be, wouldn't it!?), I have had no hot water...