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If its anything like the Medway you probably find the pilots blocked. Failing that is it relativley new like 6 years because they have an overheat thermostat which interupts the pilot on the Medway. Not sure about the Mersey. Stan

Yes it is ID. The condensate drain is classed as part of the flue so whoever left it in a bucket whats a kick! Luckily most boilers have an inbuilt siphon so you dont actually get fumes unless its empty! The Worcesters have a Syphon fill program which you can turn off if its peeing you off...

You have a passing D/valve. Not unusual from BES from what I have heard and experienced. Stan

I think you are crazy if you have a 24CDi to actually want to replace it with a cheap boiler! Sure they have issues like every other boiler on the market but get it fixed even in the unlikely event of the PCB being faulty. Stan

If its a grundfos pump I bet the impellor has come off the back of the pump. You have no circulation so if there is no blockage and you are sure there is no airlocks then it could well be that. If you turn on the boiler but leave the gas off then remove the screw from the middle of the pump...

And how long have you had the one youve got now?? and how many times has it gone wrong? The only people who moan about their boiler are the ones who have a problem. You never get you mate in the pub say "You know what my Worcester boiler hasnt gone wrong in the last 5 years" will you...

Definatly not if you dont want the rad to heat when the hot water on

Can you spell aswell? Stan

Very unlikely.Are you sure the pin is moving fully out!! Test microswitch with a meter before you buy one. More likely to be thermistor. Stan

Divertor valve knackered, or certainly diaphragm anyway. P.S STOP SHOUTING ASWELL (Try hitting your CAPS key again) Stan

Also dont forget that the return from the rad has to go into the return before the DHW return ie.DHW last in otherwise the rads will again get warm when the hot water is heating only. Good this lark init :) Stan

Just spray the old one with WD40 which will get it going until you can replace it. Stan

I use parts centre and fitted one before christmas for a similar fault. Cost me £150 approx but that was with discount. Stan

Have you had any electrical work done recently?? Is the pilot lighting but no main gas or just not lighting pilot at all Stan

I would agree with that statement Paul until I went to service a Potterton Profile which at the time was probably 6 years old. Bearing in mind it was working when I arrived by the time I had serviced it it wasnt rectifying which I thought odd. Checked all connections and for continuity on the...

This is a work around and should not have to be done if the pipework both hot and cold is right without any deadlegs as mentioned. Either find the dead legs or fit an arrestor. Stan

Flame sensing works by passing a small AC Milliamp current down to spark probe which is then rectified by the flame when it lights which is in turn picked up either by the earth of the appliance or a n other probe as DC milliamps. Therefore who ever told you to test in series on milliamp scale...

Are you sure the pin is moving out of the divertor valve when you open the hot water tap :!: :?: :!: Stan

Hence the original answer of yes a wireless will be a good idea and then put a trv on that room rad. Job sorted. Stan

The direction of the head against the body is erelevant. What you should have done was pay attention to the direction arrow which of course the instructions will tell you :?: However lesson learnt I guess. The head can be rotated to any position within the constraints of the 4 securing...