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Thanks, I think. Yes, the engineer has already been out, talked to me about it, talked to WB tech support about it, concluded that it's likely to be the plate heat exchanger, but can't be certain as it *could* be other things. I was seeking input from other engineers that have experience with...

Hi, Boiler has just started tripping into E9 error state when the shower is being used. Happens after approx 10-15 mins of shower running. Pressing the reset button on the boiler gets it all working again, until the shower is used again. Reading around here and other places on the Internet...

Ok, thanks for the replies. What a minefield! I guess the part I'm not really understanding is that, as far as I can see, if I replace a light switch (because the existing one fails), I don't have to lower the height of it to comply with current building regs, but if a cooker gets replaced...

Not entirely sure if this the correct section to post in, but it seems to be regs related, so maybe it is. A friend has purchased a new gas cooker to replace the existing one. It's the same basic type of thing -- a free-standing, low grill -- just like the one it's replacing. Had a gas...

Thanks for your input. Do you have any details about the fixed-price repair that WB do? I can't find any details about it on their website... Also, any of you work in/around the north Leicestershire area? Been having a devil of a job finding someone who's actually trained on WB combis in the...

Hi, We have a Worcester Bosch 30CDi combi, about 6 years old. The problem is this: The CH is on, we then run a hot tap. Once the hot tap is turned off, the boiler temp starts getting hotter and hotter (up into the 90's if we let it) without the rads getting any hotter -- in fact they...

Thanks, spraggo. Fortunately, the part is less than a tenner, so I'll get one, get the plumber to fit it and see if it solves the problem. Cheers!

I agree that there's some confusion, spraggo! Thanks for the clarification, though. But, err, what does "DWS" mean? Domestic Water System? And I take it from what you say, the DHW temperature sensor is, indeed, the part that the Worcester Bosch support line is most likely referring to...

Well, seems that Worcester Bosch spares centre don't have an NTC Sensor listed for the 30CDi (natural gas combi), but they "think it's probably the DHW Sensor", part number 87145000810. So, their downloadable Engineer's Service Booklet specifically refers to changing the NTC sensor for the A5...

Ok, thanks for your input and explaining what NTC means -- much appreciated! I accept that the cold inlet will have an effect, but it's been no colder here in the the past couple of days than it has been for the past 3 weeks, and maybe even a little warmer today -- although I appreciate the...

Hi, We have a Worcester Bosch 30CDi combi, about 5 years old. The central heating appears to be fine (rads get hot), but the hot water at all taps runs cold initially (cold water in pipes) then quite hot (but not as hot as previously) for about 5 - 10 seconds, and then settles down to about...