Hello
We had a brand new Worcester Bosch boiler installed less than a year ago as part of a major house refurb (every pipe, rad etc is brand new). Over the weekend we noticed that the pressure was dropping quickly and regularly (going from 1.5 to 0 every 2-3 hours). We had the gas engineer who installed the boiler and all the pipe work out on Mon to see what the problem might be- he isolated the two areas of underfloor heating, went underneath the house to check pipe work there, etc. No visible leaks. Last thing he did was open the boiler cover and to his surprise he diagnosed a faulty heat exchanger (you could literally see and hear the water dripping straight into the condenser). WB came out today and replaced it, the engineer said when he removed it a lot of water came with it. We whacked on the heating, he bled all rads, all fine and dandy- pressure holding well. Just been to check it and 4 hours later the pressure’s creeping down again. Not as rapid a loss as last time but definitely down by .5. Have taken into account that it would drop a little when heating off but this was when heating was on. In the meantime I’d turned on a rad that was previously off (but had been bled). So...my question is.. (and sorry for being a numbskull) but could a leak going from the boiler through to the outside wall somewhere cause water to effectively ‘backwash’ into the boiler itself hence drenching the heat exchanger? What should I be asking our gas engineer to look at next? Any idea what’s going on? Sorry if I haven’t explained things very well...
We had a brand new Worcester Bosch boiler installed less than a year ago as part of a major house refurb (every pipe, rad etc is brand new). Over the weekend we noticed that the pressure was dropping quickly and regularly (going from 1.5 to 0 every 2-3 hours). We had the gas engineer who installed the boiler and all the pipe work out on Mon to see what the problem might be- he isolated the two areas of underfloor heating, went underneath the house to check pipe work there, etc. No visible leaks. Last thing he did was open the boiler cover and to his surprise he diagnosed a faulty heat exchanger (you could literally see and hear the water dripping straight into the condenser). WB came out today and replaced it, the engineer said when he removed it a lot of water came with it. We whacked on the heating, he bled all rads, all fine and dandy- pressure holding well. Just been to check it and 4 hours later the pressure’s creeping down again. Not as rapid a loss as last time but definitely down by .5. Have taken into account that it would drop a little when heating off but this was when heating was on. In the meantime I’d turned on a rad that was previously off (but had been bled). So...my question is.. (and sorry for being a numbskull) but could a leak going from the boiler through to the outside wall somewhere cause water to effectively ‘backwash’ into the boiler itself hence drenching the heat exchanger? What should I be asking our gas engineer to look at next? Any idea what’s going on? Sorry if I haven’t explained things very well...
