Slowlycatchymonkey Posted February 15, 2021 Share Posted February 15, 2021 Replaced thermostat and no joy. About to replace timing programmer (same one a pretty basic âIfloâ which has been rebranded as drayton) so if this fails what next? Im inclined to assume after these two things have been replaced itâs the the boiler and likely beyond me but you never know one of you lot might say âAh check itâs not a sticky switch on the blah blahâ  Crikey this months been ridiculously expensive and now very bloody hot Quote Link to comment Share on other sites More sharing options...
husoi Posted February 15, 2021 Share Posted February 15, 2021 Is that a room thermostat or the boiler one? Quote Link to comment Share on other sites More sharing options...
Slowlycatchymonkey Posted February 15, 2021 Author Share Posted February 15, 2021 The room stat was definitely broken but replacing it has mad no difference. The boiler was on the lowest setting and is still chomping itâs way through enough LPG to heat a mansion. Quote Link to comment Share on other sites More sharing options...
husoi Posted February 15, 2021 Share Posted February 15, 2021 Sounds like the 3 way valve. get a sledge hammer and start tapping  1 Quote Link to comment Share on other sites More sharing options...
manxie49 Posted February 15, 2021 Share Posted February 15, 2021 Not sure how old your boiler is but we had a similar issue a couple of years ago, Â it was a dodgy diverter valve ..... Don't ask me what it does I'm not a plumber but it took him about twenty minutes to replace, wasn't a massive job, Â cost about ÂŁ50 odd quid from what I remember? 1 Quote Link to comment Share on other sites More sharing options...
Slowlycatchymonkey Posted February 15, 2021 Author Share Posted February 15, 2021 Hmm I feared the word valve would appear at some point! Quote Link to comment Share on other sites More sharing options...
husoi Posted February 15, 2021 Share Posted February 15, 2021 The valve @manxie49 says is the 3 way valve. What it does is to manage the water flow for heating and/or hot water. It could be simply blocked with limescale and in need of a good clean up. Depending on the system age it could be filled with silt (black sludge) and blocked. Worth to drain the whole thing and refill adding a cleaning agent, you can get it from toolstation or screwfix. Then drain it again and fill with some corrosion prevention additive. There are some plumbers that will do a system clean but that will cost you around £500 and you will be at his/her mercy. Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 What boiler you got? Is it a boiler, a system boiler pump and valve built into boiler or is it a combi? , if it's just a boiler it may have one or 2 valves depending on how it's done.  If valve motor is fooked you can get just the head, either 2 port or three.  There is a lever you can shunt to manually move the valve.  Do you have hot water?  Quote Link to comment Share on other sites More sharing options...
Slowlycatchymonkey Posted February 15, 2021 Author Share Posted February 15, 2021 Itâs definitely not a combi. Is an oil fired Worcester Bosch boiler jobby. Have always used the immersion for hot water cos LPG not cheap.   Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 It can't be an oil fired lpg   It's oil I'm out although it looks just like a plain old boiler.  Try triggering port valve manually, it's either that or the wiring to room stat is wrong could be faulty temp sensor on boiler.  Top half of pic is layout for 3 port. Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 Usually though the way the wiring for the port valve works if it dosen't switch over it dosen't complete the circuit for the one it fails on, so if it don't switch to water you get no hot water, if it sticks on water you get no heating. Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 Y plan ie 3 port wiring diagram  Quote Link to comment Share on other sites More sharing options...
Slowlycatchymonkey Posted February 15, 2021 Author Share Posted February 15, 2021 Oops getting mi fuels mixed up LPG was the old house  Pretty certain the wirings good.  Faulty temp sensor sounds like itâs a contender.  The plumber just rang back heâs certain itâs the motorised valve?!     1 Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 6 minutes ago, Slowlycatchymonkey said: Oops getting mi fuels mixed up LPG was the old house  Pretty certain the wirings good.  Faulty temp sensor sounds like itâs a contender.  The plumber just rang back heâs certain itâs the motorised valve?!     It's the most common fail point Quote Link to comment Share on other sites More sharing options...
Slowlycatchymonkey Posted February 15, 2021 Author Share Posted February 15, 2021 The motorised valve or the temp sensor? Not that it much matters, electrical stuff I donât mind but anything with more explosive tendencies Iâm happy to hand over to someone else. 1 Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 Oil is safe on the explosion front, if you want a big bang you need gas or a lightening strike to a water storage cylinder, that will take out half the house, don't use copper for overflow pipe  Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 Â 1 Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 Â Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 I'm sure your getting the idea  These are just explosions caused by blocked off pressure relief valves.  Lightening vaporises the entire tank in an instant, there was one in Blyth years ago, took the end of the house out.   Quote Link to comment Share on other sites More sharing options...
Mississippi Bullfrog Posted February 15, 2021 Share Posted February 15, 2021 15 minutes ago, Bender said: I'm sure your getting the idea  These are just explosions caused by blocked off pressure relief valves.  Lightening vaporises the entire tank in an instant, there was one in Blyth years ago, took the end of the house out.   We had one of those in our last house. The guy who installed it showed me that video. It did work very well though. Quote Link to comment Share on other sites More sharing options...
Bender Posted February 15, 2021 Share Posted February 15, 2021 1 minute ago, Mississippi Bullfrog said: We had one of those in our last house. The guy who installed it showed me that video. It did work very well though. They are great,it's when people blank off the pipe cause it keeps dripping Quote Link to comment Share on other sites More sharing options...
Stu Posted February 15, 2021 Share Posted February 15, 2021 Something that seems to have been missed  Have you wire the stat correctly? if not that can make it stay on! Quote Link to comment Share on other sites More sharing options...
Slowlycatchymonkey Posted February 15, 2021 Author Share Posted February 15, 2021 21 minutes ago, Stu said: Something that seems to have been missed  Have you wire the stat correctly? if not that can make it stay on! That bit Iâm certain about. Electrics I can manage.. to an extent... if itâs obvious.. almost full proof.. which it was  The downside- Iâve exhausted the things Iâm confident doing and will have to pay the plumber to fix it but on the upside I got to go out in my bike in the sunshine to pick up first the thermostat and then back out for the heating programmer, bit of an expensive ride but Iâm getting used to spending money on parts I donât need 1 Quote Link to comment Share on other sites More sharing options...
Stu Posted February 15, 2021 Share Posted February 15, 2021 12 minutes ago, Slowlycatchymonkey said: That bit Iâm certain about. Electrics I can manage.. to an extent... if itâs obvious.. almost full proof.. which it was  The downside- Iâve exhausted the things Iâm confident doing and will have to pay the plumber to fix it but on the upside I got to go out in my bike in the sunshine to pick up first the thermostat and then back out for the heating programmer, bit of an expensive ride but Iâm getting used to spending money on parts I donât need  Just thought I would check Quote Link to comment Share on other sites More sharing options...
Slowlycatchymonkey Posted February 15, 2021 Author Share Posted February 15, 2021 2 minutes ago, Stu said:  Just thought I would check Always best to check. So I did and itâs dandy. 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.