As part of my training I've been invited out on a job this week: suspected diverter valve issue. What better way to learn about this part than from your clear, informative videos. Seventeen minutes well spent here 👍 I can now join the engineer with a lot more confidence thanks to this nice little insight
Good Allen. May I add to simplify, as some comments indicate many did not get the gist of it. *On a Plate Heat Exchanger combi, which Allen is talking about:* ♦ The boiler has a main gas burner heat exchanger that produces heat and a separate DHW (hot water) plate heat exchanger that transfers heat to the cold incoming mains water, heating it _instantly;_ ♦ The boiler's main gas burner heat exchanger that produces heat; ♦ A pump pumps heat from this heat exchanger to the radiators; ♦ When DHW (hot water) is called by opening a tap, a flow switch is activated indicating flow on the hot water pipe circuit; ♦ A _three-way_ diverter valve moves to circulate the heated water from the radiators to circulate only inside the boiler casing; ♦ The heated water is directed to a highly efficient DHW plate heat exchanger; ♦ The plate heat exchanger has cold fresh water running though one end and hot system water from the main gas burner heat exchanger running through the other. The two waters do not meet, merely transferring heat from the hot system water to the cold fresh water; ♦ The plate heat exchanger heats incoming cold fresh water *Instantly* to a temperature suitable for domestic use; ♦ This will produce hot water infinitely, called _infinitely continuous,_ not running out of hot water; ♦ When the hot water tap is turned off, the flow switch indicates that DHW is no longer called for; ♦ The three-way valve moves to allow water to be pumped to radiators; *On an integrated gas heat exchanger/DHW heat exchanger:* ♦ The boiler has a main gas burner heat exchanger that produces heat with a DHW (hot water) heat exchanger integrated, which may be a long winding tube inside the main gas burner heat exchanger; ♦ A pump pumps heat from the main gas burner heat exchanger to the radiators; ♦ When DHW (hot water) is called by opening a tap, a flow switch is activated indicating flow on the hot water pipe circuit; ♦ The pump is deenergised preventing water from running to the radiators, while bringing in the gas burner, if it is not already activated.; ♦ The DHW heat exchanger heats incoming cold fresh water *Instantly* to a temperature suitable for domestic use; ♦ This will produce hot water infinitely, called _infinitely continuous;_ ♦ When the hot water tap is turned off, the flow switch indicates that DHW is no longer called for; ♦ The pump is activated pumping heat to the radiators, if the control system demands heat to the radiators;
Excellent Video. Very well explained and perfect for a novice like me embarking to be a Heating Engineer, to get a good understanding. Didn't want it to end. Thanks Allen
Nice video! Would be nice to see you do a similar type of video but about common faults of the boiler parts and the common signs to look out for each component
Allan, excellent video the way you described make me very attentive as well as interested . I was searching for the clue for our boiler problem which started after fault in fill in loop stop function. Pressure in the boiler increased to 3BAR and safety valved throw water on the out side wall. Engineer visited, due to the displayed error code of the boiler he changed the pump, but boiler still make noises and pressure goes up and down which noticeable from the pressure gauge. As you briefly explained that might be faulty hot plate causing this issue due to internal damage. Funny thing is that boiler work about 50% of the fully capability. Hot water seems fine but when heating kick in than it become problematic. I guess hot plate may be damaged internally during this pressure surge. Radiator make funny noises due to water movement. Am I right to assume hot plate causing this problem? please give your expert opinion.
Thanks Allen. 1. Which boiler type should I buy for house heating (not for domestic water heating)? 2. What is the source for combustion air for the gas burner? How is it drawn into chamber?
you all prolly dont care but does anybody know a method to log back into an Instagram account..? I was stupid forgot my login password. I appreciate any assistance you can offer me!
@Elisha Enoch I really appreciate your reply. I found the site through google and Im trying it out now. I see it takes a while so I will get back to you later with my results.
This was a wonderful demonstration.I really like this subject. I have a level 3 diploma in plumbing and heating, I have sent out job requests for apprenticeships in the uk. No one is accepting me and I think its because I am older than other applicants.I want to become a gas safe register certificant. Could you give me some advice?
I started with loads of on site training working with a friend for practically free whilst going to college so by the time I finished college, I had loads of on site training so I was good to go
Potterton puma had one heat exchanger that did hot water and heating!.. nicely explained which is difficult especially if you got a customer that is in their 80s lol...
Brilliant video Allen, one my best ones so far. Im just a bit confused when it comes to the heat exchange plate (square metalbox). Is the water already made.hot my the bunner before it passes through there?
Great video thanks. I have a question about cold water flow to the boiler. My comb is very similar to the one in the video (Main combi) and I notice the white plastic filter on the bottom of the incoming valve. Does this also control the cold water flow rate into the boiler ? The water pressure and flow where I live is very high so I suspect the boiler is struggling to get a 35 degree rise at 11 litres min (HW).
Hi thanks for explaining very satisfactory,i have only enquiry in terms of flow switch which that when have faulty what happening in boiler working or what kind of issue will be happening?thanks for explaining.
Nice job Alan. Good down to earth information that Joe Bloggs can understand. Keep up the great videos. I hate oil combi boilers by the way and now have a conventional boiler with a thermal store. Fills the bath in 3 mins instead of 3 hours!!!
Great video. Just a question our boiler is on 52 degrees and water is lukewarm. It only gets hot when you turn the cold water on at the same time. Been like this since British Gas fitted it 5 years ago. Sick of asking them because we had a “leak” dropping pressure on a new boiler. 5 years later after regular service, young lad comes tops up pressure vessel with air no more problems
Great video thanks. 😀👍 Our 3 year old combi boiler is loosing all of its pressure every two days. There isn’t any visible leaks anywhere. A gas engineer has isolated the central heating side, and the pressure seems to be holding. Any ideas please?
Great video Allen, would a faulty temperature sensor cause the combi boiler to shut down on DHW with error code 7 on a Remeha 28C ? If left for a few minutes if I reset the boiler it works again but only for a few minutes before shutting down again. Been happening for a week now local engineer says replace the boiler!!
Great stuff Allen, just watched this whilst eating my lunch. I don't much like the double pass giannoni hex's. They block quite easily and start making all sorts of funny noises. I think tutorials like these are great for new or inexperienced GSR engineers. Where were you 10 years ago? I wish there were people like about when I was doing my NVQ plumbing. You're a great human being. ✌
@@AllenHart999 I don't have any problems with my installs either Allen. It's just when you go in to service an appliance. Once the combustion chamber's open. You can sometimes see where the hex is blocked it's cruded and discoloured near the blockage. With installs, If the systems clean I still fit in a filter. If it's dirty a chemical flush and I put the magnacleanse on it for a short while. Gives you time to commission and do final checks, happy days 😜
Thanks for this, wish customers could see this, and realise that sometimes a double fix on components is a preventative investment, rather than a rip off
Hi I just installed a Combi Boiler. As a housewife, I cannot understand these technical things 😉. In terms of saving energy bill, should I turn the DHW "off or auto" on the thermostat? Right now for heating, auto is set and timer is on to heat up the rooms. But not sure about hot water? We use "electric shower" every day. Since we are not "heavy hot water users", I turn it to "off" position, that means "hot water on demand", right? However, what if I turn to "auto" for both: once heating heats the house, water will also be heated up?! My question is: which ways can save money? Is it "turn off - hot water on demand" or "turn auto - fuel both heating and cold water at the same time"? Thanks in advance! ☺️
Hi Allan great video thanks for the info really helpful I have a airston cals he heating is working fine but getting no hot water I'm thinking it's the dievter valve do you konw much about ariston boilers any info would be really appreciated thank you 👍
good explained very clearly how boiler work, but can you explain why sometimes heating flow with hot water pipe flow crossing each other please ,make me very confused what is wrong with it? many thanks.
Tanx for the upload allen excellent informative video, in your opinion which are the best combi boilers on the market,the one's that have 10,12 year warranties must be pretty good for the manufacturers to offer so long warranties.
Lots of really good boilers, Finding a good installer is the first thing. As for boilers, It really depends on what the requirements are, I like Viessmann and Baxi but not all models. Thanks.
Fair play mate, really enjoyed that video! Question for you if you have time, the condensate pipe on our combi boiler is copper, the boiler keeps tripping even after being serviced and I’m beginning to think it might be that copper pipe, could this be the case? We also have an electric water pump under the stairs in order to get pressure to the shower upstairs - could it be that also. Any tips on where to start? Thanks I’m advance, Andy ✌🏻
Excellant video. I have a question my baxi boiler works fine central heating perfect but the hot water when the hot water tap turned onto full flow there is a whistle sound. Turn tap down to reduce flow the whistling stops. Any ideas please. I like to know what i am talking about when calling out a gas engineer. Regards. Mr G clark
Brilliant explanation with in-depth details. I was wondering if you could help me with my boiler issue. My bosch combi boiler supplies hot water only when heating is on (when I increase the temperature through controller). So what could be the issue? The issue could be with diverter valve or temperature sensor?
Hi Allen, just an ask have a Rental property with a Grant Kerosene Combi Boiler and the System pressure was dropping off on same due to the likes of some old central heating Rad connections are very slightly leaking plus also the TRV spindles, causing things to go south with the system pressure ... the ,'Old School" heating Engineer just looked at same, serviced the Boiler,Power flushed the system filled with Corrosion Inhibiter and system Leak seal in and went down the route of fitting Auto Fill Pressure reducing station fitting two certified N/R Check Valves on same, One before the Reducing station and one after same, and left same, the incoming water ,"LIVE" to maintain a Bleed into the system if needed and tuned same to maintain a Static incoming pressure of 1Bar when the System was, "Stone Cold"... He also put in an Extra Large Expansion Vessel adjacent to the Boiler connected to the Heating system saying it would help with the reducing of Pressure within the System seems to calm things down, as ramps up to at most when fully running to just 1.6 Bar... he said that the "In Cabinet" Pressure Vessel was just on the Margin of what should be in there, bearing in mind the serious Number of oversized Rads he said were installed in the house, calling for Heat... allied with the Volume of water in same, he said it was as well have a good degree of safety in there as a Buffer... or just whenever maybe the "In Cabinet" pressure Valve would Fail, he's coming back Next summer for the next Annual Service and promised to replace that same as a matter of course as it's about Ten years old.....................My question Allen is although there's supposed to be a Hard disconnect Off the Mains... incase of a Water Outage or reduced mains pressure, and then back pressure allowing chemicals to enter the mains would this System... would this set up classed as Minor Sin on his part rather than really a bit of Accidental Bad Practice...Really Great and informative Upload...
great video mate , I have an Ideal 24 combo with no water at all at the hot tap would that be the diverter valve or the cold water valve you showed on the pump , thanks for any advice you may give Allen,
Hi Allen, Great video. Does the diverter valve cartridge unscrew from the valve like the one you had in the video? I have a Main Combi Eco 25 and wondered if it will come apart. Also, could you recommend a tool to take it apart? thank you
Thanks you Allen, I enjoyed seeing inside diverter valve, that's a first for me. Would really like to know more about the sequence on how the boiler fires up, from start to finish.. (Flow switch, pump proving, fan to ignition please) I did the Baxi 3 day fault finding course but to have that content on a video I could play back would be amazing. Thank you for your videos and good work! Luke @ MPH-SERVICES
Hi mate, My brother’s house just had Baxi 830 installed but the engineer disconnected the mechanical thermostat at the doorway and told him to that he needs to have the wireless Hive installed. But at this moment, he doesn’t have the thermostat installed and so he has to use the dial set to minimum at the boiler to stop flame but the sign of radiator on the display at the boiler is still flashing. Does it mean the pump of boiler is still working because I could still hear the noise of working from the boiler? Would the pump stop after a period of time? Do you know how long would the pump be stopped? If my brother does not install the thermostat forever, would it make any damage or harm to the boiler? Would it reduce the life time of the boiler? Thanks
Hay Allan I have a question because we would like change old gas system for some new and saving bills. Are this combi bolier is very effective and not use so many gas the my bills doesn't be shocking me? And other.. on summer time can just use for water? Thanks for advancae
Amazing tutorial I wish i can subscribe a million times good idea with the big advertisement (billboard) because you have to earn money for your time too
Excellent video on understanding how combi boiler works 👍🏻 I have no hot water, heating is fine.. Real saga going on at moment 😥 I pay for BG homecare, Ravenheat RSF 820/20 combi. 2 B.G. service engineers sent, both said can't touch boiler if there's something wrong. 🙀 This is new, they always helped before.. Not qualified to help perhaps? ~ Finally the ' engineer ' visits, doesn't check why my boiler won't fire up when hot water is called for! Doesn't open the folding down access panel >Tried & didn't know how! 🙀 Decided within 5minutes I must need new 3-way divertor valve. ~ Thing is, my hot water isn't going to radiators like he said,, boiler not firing for hot water! Told me take 3weeks & they maybe can't get this part at all, hinting I will need buy new boiler! 😥 I'm sure it's electrical sensor like you showed? Looked & I can't see 1 like yours, mine is an older, but reliable boiler. ♡ Please give me your opinion on the fault, of untrained 'engineers' , possible electrical sensor,, not this valve that they won't be able to source. I feel a fool for paying such sums of money, so long, for their " home care " , for peace of mind.💜🐱♏🌲🏴
try to find on google your boiler model name and add 'service manual'. if you find it, should have pictures how to take apart the sensor, so you find where it is and how it looks like.
Thanks for answering @@nilsfrahm1323 🤗 They changed divertor valve, then it wouldn't start! What a saga! ~ It turned out the " real engineer" who came to fix it, after 3weeks ,, was going to give up, until I showed him the original manual ! He admitted he put wires back the wrong way to electric box inside it,, thinking it wouldn't matter! They all put me thru so much stress , I feel so stupid paying this monthly fee of £45 for "peace of mind" for 20years.. ~ They should replace boiler if they break it, then cant fix it >> No? Still havn't had my annual service - they r a total waste of time! Appreciate your input on what I should do.. Just cancel the expensive homecare I've paid since I bought boiler. Or insist on complaint procedure & replacement ?
Hi Allen. My grandmother is having a boiler fitted under the eco scheme and is paying a contribution towards it. Can you please comment on which would be better option from Worcester greenstar vs Ideal Logic? Essentially, I'd like to have the easiest access to the plate heat exchanger and don't know which is easiest from the two boilers.
Allen , could explain what the fault could be if when the shower in the house is run but then the radiators go cold . It does the same with the hot water taps .Is this a boiler problem or a water pressure problem? Ti a of a solution
Nice video, when talking about diverter valves, how the cartridge moves up and down, is it not usually that when the cartridge moves up it goes to the plate heat exchange and when it moves down because of the pin it goes to CH. Or is this not the common way they work?
Hi Alan any chance you could do a video on how to replace a PRV on an ideal logic system 18/24 enjoy your videos very informative and explained so clearly Dave B
Hi Allen love your vids I was wondering if you know why my boiler is working fine an the radiators work fine nice and hot but I have no hot water in my taps an most time the boiler says pump over run some time have to run the cold water in the sink an hot water in the bath just to get it hot thanks keep up the great work 💪👍
As part of my training I've been invited out on a job this week: suspected diverter valve issue. What better way to learn about this part than from your clear, informative videos. Seventeen minutes well spent here 👍
I can now join the engineer with a lot more confidence thanks to this nice little insight
Thanks very much for your comment, please consider subscribing to support the channel 🙂
@@AllenHart999 already done 👍
Good Allen. May I add to simplify, as some comments indicate many did not get the gist of it.
*On a Plate Heat Exchanger combi, which Allen is talking about:*
♦ The boiler has a main gas burner heat exchanger that produces heat and a separate DHW (hot water) plate heat exchanger that transfers heat to the cold incoming mains water, heating it _instantly;_
♦ The boiler's main gas burner heat exchanger that produces heat;
♦ A pump pumps heat from this heat exchanger to the radiators;
♦ When DHW (hot water) is called by opening a tap, a flow switch is activated indicating flow on the hot water pipe circuit;
♦ A _three-way_ diverter valve moves to circulate the heated water from the radiators to circulate only inside the boiler casing;
♦ The heated water is directed to a highly efficient DHW plate heat exchanger;
♦ The plate heat exchanger has cold fresh water running though one end and hot system water from the main gas burner heat exchanger running through the other. The two waters do not meet, merely transferring heat from the hot system water to the cold fresh water;
♦ The plate heat exchanger heats incoming cold fresh water *Instantly* to a temperature suitable for domestic use;
♦ This will produce hot water infinitely, called _infinitely continuous,_ not running out of hot water;
♦ When the hot water tap is turned off, the flow switch indicates that DHW is no longer called for;
♦ The three-way valve moves to allow water to be pumped to radiators;
*On an integrated gas heat exchanger/DHW heat exchanger:*
♦ The boiler has a main gas burner heat exchanger that produces heat with a DHW (hot water) heat exchanger integrated, which may be a long winding tube inside the main gas burner heat exchanger;
♦ A pump pumps heat from the main gas burner heat exchanger to the radiators;
♦ When DHW (hot water) is called by opening a tap, a flow switch is activated indicating flow on the hot water pipe circuit;
♦ The pump is deenergised preventing water from running to the radiators, while bringing in the gas burner, if it is not already activated.;
♦ The DHW heat exchanger heats incoming cold fresh water *Instantly* to a temperature suitable for domestic use;
♦ This will produce hot water infinitely, called _infinitely continuous;_
♦ When the hot water tap is turned off, the flow switch indicates that DHW is no longer called for;
♦ The pump is activated pumping heat to the radiators, if the control system demands heat to the radiators;
Thanks
It’s only possible to add so much in a video, Would love to meet up and do a joint video together 😂
@@AllenHart999😂
@@johnburns4017 You know it needs to happen, You are so helpful on my videos. Many Thanks.
@@AllenHart999
:)
Excellent Video. Very well explained and perfect for a novice like me embarking to be a Heating Engineer, to get a good understanding. Didn't want it to end. Thanks Allen
Glad it was helpful!
Thanks very much for your comment, please consider subscribing to support the channel 🙂
Fantastic video. Helped me to trouble shoot my Bali hot water issue. Was able to see what was faulty and get info on what to do. Thanks!
Great video Allen and the exact boiler I have in my home. Your explanation of the workings was simple and easy to understand...well done.
Great step by step instruction of the operation of a Combi Boiler
Thank you Terry, Have a great weekend buddy 👍
Really interesting. You make it super clear to a novice who has no training. Thanks!
Glad it was helpful!
Nice video! Would be nice to see you do a similar type of video but about common faults of the boiler parts and the common signs to look out for each component
Stay safe. Watch this one just in case. Thanks ruclips.net/video/Hh5lFC7VI4U/видео.html
Thanks for the great video. I now have a basic understanding of what is going on when my combi boiler is operating. Very useful content.
Allan, excellent video the way you described make me very attentive as well as interested . I was searching for the clue for our boiler problem which started after fault in fill in loop stop function. Pressure in the boiler increased to 3BAR and safety valved throw water on the out side wall. Engineer visited, due to the displayed error code of the boiler he changed the pump, but boiler still make noises and pressure goes up and down which noticeable from the pressure gauge. As you briefly explained that might be faulty hot plate causing this issue due to internal damage. Funny thing is that boiler work about 50% of the fully capability. Hot water seems fine but when heating kick in than it become problematic.
I guess hot plate may be damaged internally during this pressure surge. Radiator make funny noises due to water movement. Am I right to assume hot plate causing this problem? please give your expert opinion.
Brilliant video, thank you so much for going through every aspect, it was one of the best so far.
Thank You.
Thanks Allen.
1. Which boiler type should I buy for house heating (not for domestic water heating)?
2. What is the source for combustion air for the gas burner? How is it drawn into chamber?
Excellent, thank you another great instructional video.
Glad you enjoyed it
Really helpful video with a thorough explanation . Thankyou Allen
My pleasure!
Excellent Video Allen and very well explained, PRV is abbreviation for Pressure Relief Valve
Thank you for taking the time to watch my video.
Brilliant vid, explains how Combi boilers work in great depth 👍.
James LowDoyle Hi James, Thank you for watching 👍
Well done for your honest report
Thanks for the video, as much as you may think you know it's always good to hear things explained
Thank you for watching, I have been waiting for all the negative comments but so far so good 😂😂😂😂👍
@@AllenHart999 nothing negative to say mate. Just trying to get going again only doing cookers right now but there's a servicing job on the horizon.
@@gerrosrightboot Good luck with it buddy. Thanks for watching.
Excellent video you explained things really well so I understand much better than before on how a boiler works
I am much wiser now thanks, combi replacing our old style cylinder & water tank in loft tomorrow.
Really helpful explanation thank you very much. Nice pace and you answered my question I had about diverter valves. Thank you
You are welcome!
This was a really good introduction to the subject. I will never be messing with boilers in my life but it’s good to know how they work.
Thank you
you all prolly dont care but does anybody know a method to log back into an Instagram account..?
I was stupid forgot my login password. I appreciate any assistance you can offer me!
@Terry Esteban instablaster =)
@Elisha Enoch I really appreciate your reply. I found the site through google and Im trying it out now.
I see it takes a while so I will get back to you later with my results.
@Elisha Enoch It did the trick and I now got access to my account again. I'm so happy:D
Thanks so much, you saved my account :D
That was a really great informative video and well presented in real layman’s language. Thanks.
Glad it was helpful!
thank you for very good explanation.
Glad you liked it
This was a wonderful demonstration.I really like this subject. I have a level 3 diploma in plumbing and heating, I have sent out job requests for apprenticeships in the uk. No one is accepting me and I think its because I am older than other applicants.I want to become a gas safe register certificant. Could you give me some advice?
Try beta training centers
I started with loads of on site training working with a friend for practically free whilst going to college so by the time I finished college, I had loads of on site training so I was good to go
Mate really appreciate your videos good in depth working principles of a Combi Boiler keep up the good work. Cheers mate
Thank you for taking the time to watch them. 👍👍👍👍
Merci mon cher AL c'est plutot merveilleux,chapeaux bas a vous.you deserve a pint or two cheers
Potterton puma had one heat exchanger that did hot water and heating!.. nicely explained which is difficult especially if you got a customer that is in their 80s lol...
Brilliant video Allen, one my best ones so far.
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Well explained sir. Enjoyably and informative. Want to learn bit more about the combi. 😁
Thank you
Excellent video, really helpful, spot on
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Good detailed information about the combi boiler.
Hi Tom. Thanks.
Thanks for this. I was trying to understand how a combi boiler senses water on the tap has been turned on.
Thank you Allen! I love all of your videos and the way you work! You help me so much!
Excellent video learnt so much
Good vid Alan , nice and simple explanation of how combis work in general. 👍
Thanks John.
Brilliant video Allen, one my best ones so far.
Im just a bit confused when it comes to the heat exchange plate (square metalbox). Is the water already made.hot my the bunner before it passes through there?
YES YES the main heat exchanger heats the water and then goes to the smaller plate heat exchanger. Thanks.
Allen Hart so basically the heating water is always on? What prevents it going into the heating side in the summer months?
@@simonstones1918 I think it's only when water heating is required that the boiler water is heated up and sent to the heat exchanger.
Great video thanks. I have a question about cold water flow to the boiler. My comb is very similar to the one in the video (Main combi) and I notice the white plastic filter on the bottom of the incoming valve. Does this also control the cold water flow rate into the boiler ?
The water pressure and flow where I live is very high so I suspect the boiler is struggling to get a 35 degree rise at 11 litres min (HW).
Hi thanks for explaining very satisfactory,i have only enquiry in terms of flow switch which that when have faulty what happening in boiler working or what kind of issue will be happening?thanks for explaining.
Nice job Alan. Good down to earth information that Joe Bloggs can understand. Keep up the great videos. I hate oil combi boilers by the way and now have a conventional boiler with a thermal store. Fills the bath in 3 mins instead of 3 hours!!!
Hi Keith, Thanks for for watching 👍
Realy help full thanks
Great video. Just a question our boiler is on 52 degrees and water is lukewarm. It only gets hot when you turn the cold water on at the same time. Been like this since British Gas fitted it 5 years ago. Sick of asking them because we had a “leak” dropping pressure on a new boiler. 5 years later after regular service, young lad comes tops up pressure vessel with air no more problems
Really informative video Allen, Thankyou
eccelente video....Thank you .....is this the same for a condensing boiler....it kind of looks like one....??
Yes, it is
Great video as usual Allen! Always very informative 👍🏻thank you
Thank You
Well done Allen good thorough explanation.
Thanks
Really helpful and well explained. Thanks.
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Great video thanks. 😀👍
Our 3 year old combi boiler is loosing all of its pressure every two days. There isn’t any visible leaks anywhere. A gas engineer has isolated the central heating side, and the pressure seems to be holding. Any ideas please?
Great presentation 👍🏽
Thank you.
Great video Allen, would a faulty temperature sensor cause the combi boiler to shut down on DHW with error code 7 on a Remeha 28C ? If left for a few minutes if I reset the boiler it works again but only for a few minutes before shutting down again. Been happening for a week now local engineer says replace the boiler!!
exelent videos..from argentina..thank you for the services..am technical baxi boliler..and boilers diferent boiler ..here
Great stuff Allen, just watched this whilst eating my lunch. I don't much like the double pass giannoni hex's. They block quite easily and start making all sorts of funny noises. I think tutorials like these are great for new or inexperienced GSR engineers. Where were you 10 years ago? I wish there were people like about when I was doing my NVQ plumbing. You're a great human being. ✌
+ghostmanromeo uk I have never had any issues on any of my Installations. If you fit a boiler badly and don’t flush then you could have issues, 👍
@@AllenHart999 I don't have any problems with my installs either Allen. It's just when you go in to service an appliance. Once the combustion chamber's open. You can sometimes see where the hex is blocked it's cruded and discoloured near the blockage.
With installs, If the systems clean I still fit in a filter. If it's dirty a chemical flush and I put the magnacleanse on it for a short while. Gives you time to commission and do final checks, happy days 😜
Thanks for this, wish customers could see this, and realise that sometimes a double fix on components is a preventative investment, rather than a rip off
Sometimes you need to change more than one part. Thanks for watching.
Really appreciate your videos mate👍 helping engineers gain knowledge👌 keep up the good work
Thank you for taking the time to watch my video.
Good teaching bossman
Thanks for this video, amazing knowledge
Hi great videos.
I have the same unit. With hot water but no heating on the apartment except for one room. Any ideas on why just one room has heat.?
Hi I just installed a Combi Boiler. As a housewife, I cannot understand these technical things 😉. In terms of saving energy bill, should I turn the DHW "off or auto" on the thermostat? Right now for heating, auto is set and timer is on to heat up the rooms. But not sure about hot water? We use "electric shower" every day. Since we are not "heavy hot water users", I turn it to "off" position, that means "hot water on demand", right? However, what if I turn to "auto" for both: once heating heats the house, water will also be heated up?! My question is: which ways can save money? Is it "turn off - hot water on demand" or "turn auto - fuel both heating and cold water at the same time"? Thanks in advance! ☺️
Great video Allen! I’d love to see a video review of how a ferroli modena Combi boiler works as it’s no plate heat exchanger.
Thanks. 👍
Only video u need on a ferroli is how to put it in a skip
@@accesszero4803 I used to install a lot of ferroli boilers many years ago and they were very reliable but i do not see them much these days, Thanks.
Great video learned a lot💜👍
Thanks.
Hi Allan great video thanks for the info really helpful I have a airston cals he heating is working fine but getting no hot water I'm thinking it's the dievter valve do you konw much about ariston boilers any info would be really appreciated thank you 👍
Nicely explained 😉
Thank you for taking the time to watch my video.
good explained very clearly how boiler work, but can you explain why sometimes heating flow with hot water pipe flow crossing each other please ,make me very confused what is wrong with it? many thanks.
Tanx for the upload allen excellent informative video, in your opinion which are the best combi boilers on the market,the one's that have 10,12 year warranties must be pretty good for the manufacturers to offer so long warranties.
Lots of really good boilers, Finding a good installer is the first thing. As for boilers, It really depends on what the requirements are, I like Viessmann and Baxi but not all models. Thanks.
Fair play mate, really enjoyed that video! Question for you if you have time, the condensate pipe on our combi boiler is copper, the boiler keeps tripping even after being serviced and I’m beginning to think it might be that copper pipe, could this be the case? We also have an electric water pump under the stairs in order to get pressure to the shower upstairs - could it be that also. Any tips on where to start?
Thanks I’m advance,
Andy ✌🏻
Excellant video. I have a question my baxi boiler works fine central heating perfect but the hot water when the hot water tap turned onto full flow there is a whistle sound. Turn tap down to reduce flow the whistling stops. Any ideas please. I like to know what i am talking about when calling out a gas engineer.
Regards. Mr G clark
Brilliant video
Brilliant explanation with in-depth details. I was wondering if you could help me with my boiler issue. My bosch combi boiler supplies hot water only when heating is on (when I increase the temperature through controller). So what could be the issue? The issue could be with diverter valve or temperature sensor?
Great video Alan.
Hi Allen, just an ask have a Rental property with a Grant Kerosene Combi Boiler and the System pressure was dropping off on same due to the likes of some old central heating Rad connections are very slightly leaking plus also the TRV spindles, causing things to go south with the system pressure ... the ,'Old School" heating Engineer just looked at same, serviced the Boiler,Power flushed the system filled with Corrosion Inhibiter and system Leak seal in and went down the route of fitting Auto Fill Pressure reducing station fitting two certified N/R Check Valves on same, One before the Reducing station and one after same, and left same, the incoming water ,"LIVE" to maintain a Bleed into the system if needed and tuned same to maintain a Static incoming pressure of 1Bar when the System was, "Stone Cold"... He also put in an Extra Large Expansion Vessel adjacent to the Boiler connected to the Heating system saying it would help with the reducing of Pressure within the System seems to calm things down, as ramps up to at most when fully running to just 1.6 Bar... he said that the "In Cabinet" Pressure Vessel was just on the Margin of what should be in there, bearing in mind the serious Number of oversized Rads he said were installed in the house, calling for Heat... allied with the Volume of water in same, he said it was as well have a good degree of safety in there as a Buffer... or just whenever maybe the "In Cabinet" pressure Valve would Fail, he's coming back Next summer for the next Annual Service and promised to replace that same as a matter of course as it's about Ten years old.....................My question Allen is although there's supposed to be a Hard disconnect Off the Mains... incase of a Water Outage or reduced mains pressure, and then back pressure allowing chemicals to enter the mains would this System... would this set up classed as Minor Sin on his part rather than really a bit of Accidental Bad Practice...Really Great and informative Upload...
Thanks forgot Allen another brilliant video.
Can you please do a video on three wire thermostat for combination boiler.
Will appreciate
No problem, I will add one soon. Thanks.
thank very much its very helpful video
Excellent Video mate... you need to be reclassified as "Gas Safe +++++".. Thanks
great video mate , I have an Ideal 24 combo with no water at all at the hot tap would that be the diverter valve or the cold water valve you showed on the pump , thanks for any advice you may give Allen,
Flow turbine maybe? Give ideal a call or a local engineer. Thanks.
This man knows his stuff . great video again Alan
Thank you for watching. 👍
Hi Allen,
Great video. Does the diverter valve cartridge unscrew from the valve like the one you had in the video? I have a Main Combi Eco 25 and wondered if it will come apart. Also, could you recommend a tool to take it apart?
thank you
Hi Allen my nephew's boiler fires up but he has no hot water or heating , it is a heatline condenser boiler . No alarms showing , any ideas thanks
Thank you, very informative. Question please- with a combi boiler, can you have 2 zones/ circuits in the heating part?
Thanks you Allen,
I enjoyed seeing inside diverter valve, that's a first for me.
Would really like to know more about the sequence on how the boiler fires up, from start to finish..
(Flow switch, pump proving, fan to ignition please)
I did the Baxi 3 day fault finding course but to have that content on a video I could play back would be amazing.
Thank you for your videos and good work!
Luke @ MPH-SERVICES
Hi mate,
My brother’s house just had Baxi 830 installed but the engineer disconnected the mechanical thermostat at the doorway and told him to that he needs to have the wireless Hive installed. But at this moment, he doesn’t have the thermostat installed and so he has to use the dial set to minimum at the boiler to stop flame but the sign of radiator on the display at the boiler is still flashing. Does it mean the pump of boiler is still working because I could still hear the noise of working from the boiler? Would the pump stop after a period of time? Do you know how long would the pump be stopped? If my brother does not install the thermostat forever, would it make any damage or harm to the boiler? Would it reduce the life time of the boiler?
Thanks
Hay Allan I have a question because we would like change old gas system for some new and saving bills. Are this combi bolier is very effective and not use so many gas the my bills doesn't be shocking me?
And other.. on summer time can just use for water? Thanks for advancae
This is content is amazing!! Especially when your doing your gas training!!! ❤️❤️
Thank You
Another nice video Allen thank you
Thank you Keith, Have a great weekend buddy👍
Amazing tutorial
I wish i can subscribe a million times
good idea with the big advertisement (billboard) because you have to earn money for your time too
Happy to help, Thank you very much for watching.
Happy new year. 👍
I was recommended by one of my friends on StumbleUpon to watch out your video!
Hi Allen, what temp and flow should I get for my DHW from Halstead Eden 32Kw, I'm getting 48C @8.5L/, my mains water is 3.5bar.
Hi Allen, have you ever come across a really loud (vibrating) diverter valve? This is on a Baxi 830.
Excellent video on understanding how combi boiler works 👍🏻
I have no hot water, heating is fine.. Real saga going on at moment 😥 I pay for BG homecare, Ravenheat RSF 820/20 combi.
2 B.G. service engineers sent, both said can't touch boiler if there's something wrong. 🙀
This is new, they always helped before.. Not qualified to help perhaps?
~ Finally the ' engineer ' visits, doesn't check why my boiler won't fire up when hot water is called for!
Doesn't open the folding down access panel >Tried & didn't know how! 🙀 Decided within 5minutes I must need new 3-way divertor valve.
~ Thing is, my hot water isn't going to radiators like he said,, boiler not firing for hot water!
Told me take 3weeks & they maybe can't get this part at all, hinting I will need buy new boiler! 😥
I'm sure it's electrical sensor like you showed? Looked & I can't see 1 like yours, mine is an older, but reliable boiler.
♡ Please give me your opinion on the fault, of untrained 'engineers' , possible electrical sensor,, not this valve that they won't be able to source.
I feel a fool for paying such sums of money, so long, for their " home care " , for peace of mind.💜🐱♏🌲🏴
try to find on google your boiler model name and add 'service manual'. if you find it, should have pictures how to take apart the sensor, so you find where it is and how it looks like.
Thanks for answering @@nilsfrahm1323 🤗 They changed divertor valve, then it wouldn't start! What a saga!
~ It turned out the " real engineer" who came to fix it, after 3weeks ,, was going to give up, until I showed him the original manual !
He admitted he put wires back the wrong way to electric box inside it,, thinking it wouldn't matter!
They all put me thru so much stress , I feel so stupid paying this monthly fee of £45 for "peace of mind" for 20years..
~ They should replace boiler if they break it, then cant fix it >> No? Still havn't had my annual service - they r a total waste of time!
Appreciate your input on what I should do.. Just cancel the expensive homecare I've paid since I bought boiler.
Or insist on complaint procedure & replacement ?
Great vid, helped a lot. So the pump is activated by the room stat or the hot water flow sensor, are they also both connected to the diverter valve?
Stay safe. Watch this one just in case. Thanks ruclips.net/video/Hh5lFC7VI4U/видео.html
Great videos Allen keep up the good work
Hi Roger, Thanks.👍
Hi Allen. My grandmother is having a boiler fitted under the eco scheme and is paying a contribution towards it. Can you please comment on which would be better option from Worcester greenstar vs Ideal Logic? Essentially, I'd like to have the easiest access to the plate heat exchanger and don't know which is easiest from the two boilers.
Allen , could explain what the fault could be if when the shower in the house is run but then the radiators go cold . It does the same with the hot water taps .Is this a boiler problem or a water pressure problem? Ti a of a solution
I have baxi solo 2 pf the overheat lamp lights up and he does not want to turn on thanks for any help, pump ok work.
great video alan, always love watching your videos, even though im not a plumber
Nice video, when talking about diverter valves, how the cartridge moves up and down, is it not usually that when the cartridge moves up it goes to the plate heat exchange and when it moves down because of the pin it goes to CH. Or is this not the common way they work?
Thankyou.
Hi Alan any chance you could do a video on how to replace a PRV on an ideal logic system 18/24 enjoy your videos very informative and explained so clearly
Dave B
Will do
Hi Allen love your vids I was wondering if you know why my boiler is working fine an the radiators work fine nice and hot but I have no hot water in my taps an most time the boiler says pump over run some time have to run the cold water in the sink an hot water in the bath just to get it hot thanks keep up the great work 💪👍
Amazing Alan. Much appreciated
Thank you for taking the time to watch my video.
Allen I have a Greenstar combi,the hot water is running for about 5 mins then cutting out. Any ideas?