Urban Plumbers Ltd.
type: channel
description: Urban Plumbers Ltd.
date: 2025-09-22T07:33:13Z
update period: hourly
update frequency: 1
update base: 2000-01-01T12:00+00:00
items: Viessmann Vitocal 150A 8kW
items: Design Files for Vaillant Arotherm Heat Pump Installation
items: Vaillant Eco Tec Plus system boiler hot water priority diagrams
items: Vaillant F.75 error code – full boiler repair
items: Ideal Logic intermittent ‘ignition lockout’ message, L2 boiler fault, error code
items: Vaillant Eco Tec R1 combi boiler repair Brixton, Vaillant F22, F75 error code.
items: How efficient are modern condensing boilers?
items: Emergency boiler repair in Crystal Palace, SE19
items: Vaillant Eco Tec ‘Con’ error code
items: Baxi error code E133 – ignition lockout

Viessmann Vitocal 150A 8kW
type: item
creator: URBANPumbeRAdmin
date: 2025-09-22T07:32:23Z
subject: Portfolio
description: This is a plant room of a Viessmann Vitocal 150A 8kW unit installation in Guildford. Artykuł Viessmann Vitocal 150A 8kW pochodzi z serwisu Urban Plumbers Ltd..
encoded: This is a plant room of a Viessmann Vitocal 150A 8kW unit installation in Guildford. <img fetchpriority="high" decoding="async" width="1024" height="576" data-id="1611" src="https://www.urbanplumbers.co.uk/wp-content/uploads/2025/09/IMG_1732.jpg" alt="" class="wp-image-1611" srcset="https://www.urbanplumbers.co.uk/wp-content/uploads/2025/09/IMG_1732.jpg 1024w, https://www.urbanplumbers.co.uk/wp-content/uploads/2025/09/IMG_1732-1000x563.jpg 1000w" sizes="(max-width: 1024px) 100vw, 1024px" /> Artykuł Viessmann Vitocal 150A 8kW pochodzi z serwisu Urban Plumbers Ltd..

Design Files for Vaillant Arotherm Heat Pump Installation
type: item
creator: URBANPumbeRAdmin
date: 2025-01-03T14:24:26Z
subject: Articles
description: Below, you will find my design files and calculations for the installation of a Vaillant Arotherm Plus heat pump that you can see in my YouTube video: “Design Heating System Like A Pro” Artykuł Design Files for Vaillant Arotherm Heat Pump Installation pochodzi z serwisu Urban Plumbers Ltd..
encoded: Below, you will find my design files and calculations for the installation of a Vaillant Arotherm Plus heat pump that you can see in my YouTube video: “Design Heating System Like A Pro” <img decoding="async" class="alignnone wp-image-1423 size-medium" src="https://www.urbanplumbers.co.uk/wp-content/uploads/2025/01/ground-floor-1024x576.png-1000x563.webp" alt="" width="1000" height="563" srcset="https://www.urbanplumbers.co.uk/wp-content/uploads/2025/01/ground-floor-1024x576.png-1000x563.webp 1000w, https://www.urbanplumbers.co.uk/wp-content/uploads/2025/01/ground-floor-1024x576.png.webp 1024w" sizes="(max-width: 1000px) 100vw, 1000px" /> <img loading="lazy" decoding="async" class="alignnone wp-image-1429 size-medium" src="https://www.urbanplumbers.co.uk/wp-content/uploads/2025/01/first-floor-2-1000x667.webp" alt="" width="1000" height="667" srcset="https://www.urbanplumbers.co.uk/wp-content/uploads/2025/01/first-floor-2-1000x667.webp 1000w, https://www.urbanplumbers.co.uk/wp-content/uploads/2025/01/first-floor-2.webp 1400w" sizes="auto, (max-width: 1000px) 100vw, 1000px" /> Artykuł Design Files for Vaillant Arotherm Heat Pump Installation pochodzi z serwisu Urban Plumbers Ltd..

Vaillant Eco Tec Plus system boiler hot water priority diagrams
type: item
creator: URBANPumbeRAdmin
date: 2022-11-20T01:52:19Z
subject: Articles
description: Below, you will find my design files and calculations for the installation of a Vaillant Arotherm Plus heat pump that you can see in my YouTube video: “Design Heating System Like A Pro” Artykuł Vaillant Eco Tec Plus system boiler hot water priority diagrams pochodzi z serwisu Urban Plumbers Ltd..
encoded: This are diagrams for domestic hot hot water priority set up using: – Vaillant system boilers – Vaillant SensoComfort controls with VR 71 wiring ceters – System with hot water cylinder, radiators and UFH <img loading="lazy" decoding="async" class="alignnone wp-image-1439 size-medium" src="https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics-1000x750.webp" alt="" width="1000" height="750" srcset="https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics-1000x750.webp 1000w, https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics-2000x1500.webp 2000w, https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics.webp 2048w" sizes="auto, (max-width: 1000px) 100vw, 1000px" /> <img loading="lazy" decoding="async" class="alignnone wp-image-1440 size-medium" src="https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics-controls-copy-1000x750.webp" alt="" width="1000" height="750" srcset="https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics-controls-copy-1000x750.webp 1000w, https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics-controls-copy-2000x1500.webp 2000w, https://www.urbanplumbers.co.uk/wp-content/uploads/2022/11/vaillant-schematics-controls-copy.webp 2048w" sizes="auto, (max-width: 1000px) 100vw, 1000px" /> Artykuł Vaillant Eco Tec Plus system boiler hot water priority diagrams pochodzi z serwisu Urban Plumbers Ltd..

Vaillant F.75 error code – full boiler repair
type: item
creator: URBANPumbeRAdmin
date: 2022-01-04T14:26:43Z
subject: Articles
description: Below, you will find my design files and calculations for the installation of a Vaillant Arotherm Plus heat pump that you can see in my YouTube video: “Design Heating System Like A Pro” Artykuł Vaillant F.75 error code – full boiler repair pochodzi z serwisu Urban Plumbers Ltd..
encoded: This Vaillant boiler has been suffering from error codes F.75 and low pressure on the pressure gauge. There was also a visible leak to the right-hand side of the boiler. When I opened the boiler, I found a source of the leak – it as scaled Automatic Air Vent on the boiler pump. First call of action was to replace that leaking AAV. Below you can see an existing leaking part on the left and a new part on the right. With the boiler drained down, I also checked the expansion vessel pressure – it was zero. I repressurized the expansion vessel to 0.9 bar. I also replaced the Pressure Relief Valve – as with a flat expansion vessel, those valves usually pass as well. New PRV pictured below. With the boiler fully drained down, the pressure sensor should be sensing no pressure and the expected error message on the boiler display is usually F.22 or 0.0bar – or both messages flashing one after another. However, in this case the boiler was showing an F.75 error message. What do those error messages mean? F.22 – low water pressure, boiler will not fire. Top up boiler pressure or find a leak and repair the leak on the system or on the boiler itself F.75 – no pressure increase detected when the pump starts. This prevents the boiler from firing as the PCB assumes that the pump is not working. This error according to the Vaillant manual should point to the faulty pump. In most cases however, this is a faulty or blocked pressure sensor – as those little sensors are notoriously unreliable. The pumps on those boilers are very reliable and fail very rarely. Boiler below showing error code F.75 with no pressure in the boiler. Expected error code in this case should be F.22 / o.o bar. On the picture below, you can see the faulty pressure sensor in situ. It is this black round object with a white connector and black and red wires attached to it. I removed the sensor (member the boiler needs to be drained down), and as you can see from the picture below it is fully blocked. I do not recommen…

Ideal Logic intermittent ‘ignition lockout’ message, L2 boiler fault, error code
type: item
creator: URBANPumbeRAdmin
date: 2021-10-04T13:33:23Z
subject: Articles
description: Below, you will find my design files and calculations for the installation of a Vaillant Arotherm Plus heat pump that you can see in my YouTube video: “Design Heating System Like A Pro” Artykuł Ideal Logic intermittent ‘ignition lockout’ message, L2 boiler fault, error code pochodzi z serwisu Urban Plumbers Ltd..
encoded: Ideal Logic combi boiler is one of the most popular combination boilers installed in the UK today. There are thousands of those boilers installed in homes in the UK. One of the most common errors on these boilers is: Ignition Lockout / L2 error code – Ideal Logic / Ideal Independent / Ideal Classic Depending on the version of this boiler, the same error can be displayed as ‘ignition lockout’ on Logics + and Logic Max versions or simply as an L2 error on Ideal Independent, Ideal Atlantic & Ideal Classic 2 boilers. This error can be simply caused by the lack of gas, so before calling a boiler engineer out it is worth checking if other gas appliances are getting gas, if your prepaid meter is in credit or if the gas is on. Most of the time this error can be simply re set by resetting the boiler. On Ideal Logics, you simply turn the far-right dial to the right and hold it there for a few seconds. This should clear the error and allow you to use the boiler, as those errors are usually intermittent. It will still need a competent boiler engineer to have a look at the boiler and find the underlaying cause of those intermittent faults. In my experience, there are a number of causes for this fault. The most common faulty part is the ignition module also called spark generator. If your Ideal boiler suffers from intermittent ‘ignition faults’ or L2 error codes, you can get in touch with me to get it repaired. Just click the link below to go to my website home page: Ideal boilers servicing and repair Below, you can read about a real life Ideal Logic repair. This particular boiler was installed in 2011 (It is 10 years old today) and it was suffering from intermittent ignition lock outs. When I removed the front case I could see that there were two obvious problems with the boiler. These were most likely unrelated to the ignition lock outs, but had to be addressed first. The boiler sump was cracked and needed replacing. The tell-tale signs of a cracked sump is a white residue arou…

Vaillant Eco Tec R1 combi boiler repair Brixton, Vaillant F22, F75 error code.
type: item
creator: URBANPumbeRAdmin
date: 2021-10-03T12:04:21Z
subject: Articles
description: Hi, I am Simon and I repair all models of Vaillant boilers. I am based in Upper Norwood & serve South London area. If your boiler suffers from F.22 or F.75 errors, or any other Vaillant error codes, please get in touch with me here: Vaillant Repairs Crystal Palace Vaillant Eco Tec Pro R1 – […] Artykuł Vaillant Eco Tec R1 combi boiler repair Brixton, Vaillant F22, F75 error code. pochodzi z serwisu Urban Plumbers Ltd..
encoded: Hi, I am Simon and I repair all models of Vaillant boilers. I am based in Upper Norwood & serve South London area. If your boiler suffers from F.22 or F.75 errors, or any other Vaillant error codes, please get in touch with me here: Vaillant Repairs Crystal Palace Vaillant Eco Tec Pro R1 – manufactured in 2007. This hugely popular boiler has been suffering from the following problems: • hot water not reliable – stops working occasionally • heating not reliable – sometimes works, but not always • boiler needs resetting to get it to work again When I took the case off I noticed that: • this early version of Vaillant Eco Tec still had rubber hoses on return • pressure gauge was at zero, but the boiler was still working – I assumed that the pressure sensor must be blocked • I removed pressure relief connection – it was wet – pressure relief valve was leaking • I checked the expansion vessel – it was flat and full of water. I also notice that expansion vessel looked like it was recently replaced • there was no thermostat or any controls connected to the boiler, meaning that heating was always on This Vaillant boiler have had the heating always on for last 14 years and the way it was controlled was by turning all radiator valves off in the summer. This caused the boiler to constantly turn itself on and off when all the radiators were of – so-called cycling, the best way to flatten your expansion vessel, activate the pressure relief valve and eventually corrode the system and destroy the boiler in the process. How has this boiler survived all this time in this set up is beyond me. The work that I have done is as follows: • replace the infamous rubber hose on the return pipework with a new rubber hose. I did not have the upgrade kit with that replaces hoses with copper connection with me and this was a short-term solution to some of this boiler problems. The problem with rubber hoses is the fact that they accumulate system dirt causing blockage to boiler components such as:…

How efficient are modern condensing boilers?
type: item
creator: URBANPumbeRAdmin
date: 2021-09-30T12:07:22Z
subject: Articles
description: Today I am going to show you how you can save money on your central heating and hot water gas bills. Yes – we are talking about system efficiency or actually rather we are talking about why most gas boilers are notoriously inefficient. If you apply principles discussed in this blog you will not only […] Artykuł How efficient are modern condensing boilers? pochodzi z serwisu Urban Plumbers Ltd..
encoded: Today I am going to show you how you can save money on your central heating and hot water gas bills. Yes – we are talking about system efficiency or actually rather we are talking about why most gas boilers are notoriously inefficient. If you apply principles discussed in this blog you will not only be able to save yourself few hundred pounds a year but you will also learn how to run your system in a way that will prevent your boilers from breakdowns and costly repairs. “What? Systems that runs efficiently prevent boilers from breaking down? What kind of voodoo is he talking about?” Well, as you will see there is a correlation between inefficient systems and longevity of your boiler and system components – but we will get to that. EFFICIENCY What is efficiency? Firstly we need to distinguish between following aspect of efficiency: – your house energy efficiency – it basically means how quickly your house is losing heat – we call it a heat loss and we calculate a specific value for each property. The lower the value measured in kWH to better the efficiency of the property – your heat generator efficiency – this is a gas boiler in our example, but it could also be a heat pump, electric boiler or an oil boiler. The efficiency of a gas boiler is simply the difference between energy we put in in form of gas and usable heat output we receive to heat our homes. In case of gas boilers there is always some heat lost through the flue as products of combustion HOW TO GET MORE FROM YOUR GAS BOILER General rule of thumb when it comes to gas boiler efficiency is: the lower your boiler return pipework temperature the higher your system efficiency all other things being equal. Your gas boiler has a pipe called flow – this is where hot water enters your system on its way from the heat exchanger to the radiators or other heat emitters. That hot water losses it’s heat or energy being dissipated through radiators and then comes back cooler to the boiler through a pipe called Return to …

Emergency boiler repair in Crystal Palace, SE19
type: item
creator: URBANPumbeRAdmin
date: 2021-01-26T13:10:54Z
subject: Articles
description: I got called to diagnose and repair a suspected boiler leak in SE19, Crystal Palace. The client actually used the phrase ‘Plumber to fix a leaking boiler in SE19’ to find me on Google. When I got to site, I was met with this massive leak coming from the boiler pressure relief valve that has soaked the whole […] Artykuł Emergency boiler repair in Crystal Palace, SE19 pochodzi z serwisu Urban Plumbers Ltd..
encoded: I got called to diagnose and repair a suspected boiler leak in SE19, Crystal Palace. The client actually used the phrase ‘Plumber to fix a leaking boiler in SE19’ to find me on Google. When I got to site, I was met with this massive leak coming from the boiler pressure relief valve that has soaked the whole wall. I quickly noticed that the filling loop was passing and over pressurizing the central heating system, causing a continuous leak of hot water. On top of that the pressure relief pipework was going uphill making water drip on to the pipe and into the wall. On quick examination, I also found something rather strange. The magnetic filter was fitted with a bypass (the filter was not really doing much) and on top of that one of the soldered joints was leaking. Generally, the installation was really shoddy. When I asked the client when it was installed, it turned out that it was done only 3 years ago. Also, the boiler was a direct swap and the client paid £2600 for supply and fit of a budget boiler. Something wasn’t quote right. I checked paperwork and a quick Google search of the full name of the installer came back with BBC rouge traders article. It may be a good idea to google your installer if you are looking to have your boiler replaced! That could have saved a lot of grief in this case. Coming back to the repair, what has been done to remedy the situation: replace pressure relief valve re pressurize expansion vessel replace filling loop with a compliant filling loop with 2 stop taps remove filter by pass and at the same time repair leak to the pipework change angle of pressure relief pipework replace leaking magnetic filter with new Magna Clean Pro 1 filter add inhibitor to the central heating system If you need your boiler repaired or boiler leak fixed in SE19, Crystal Palace area or surrounding areas please book your boiler repair here Artykuł Emergency boiler repair in Crystal Palace, SE19 pochodzi z serwisu Urban Plumbers Ltd..

Vaillant Eco Tec ‘Con’ error code
type: item
creator: URBANPumbeRAdmin
date: 2020-01-12T13:13:25Z
subject: Articles
description: If your boiler is showing ‘Con’ message on main display it means that your main PCB or possibly display PCB has failed and will need to be replaced. ‘Con’ message means that there is a communication error between main board and display board. Both boards are connected directly with pin connectors so that takes out […] Artykuł Vaillant Eco Tec ‘Con’ error code pochodzi z serwisu Urban Plumbers Ltd..
encoded: If your boiler is showing ‘Con’ message on main display it means that your main PCB or possibly display PCB has failed and will need to be replaced. ‘Con’ message means that there is a communication error between main board and display board. Both boards are connected directly with pin connectors so that takes out a possibilty that a ribbon cable could have failed. Vaillant PCBs from R1 and R2 Eco Tec series are known to be unrelaible and ‘Con’ message is just one of the ways that PCB boards fail on those boilers. It does happen that those boards simply fail when the boiler is turned on and off at the spur switch and unfortunately it has happened to me on more than one occasion. Video below show a a Vaillant Eco Tec boiler with ‘Con’ fault problem. If your boiler is showing ‘Con’ fault code on the main display and you are in my area (Check areas covered on this web site) – please get in touch to have it repaired. The same boiler after repair below: If you need a boiler repaired and you are in SE or SW London you can contact me here plumber Crystal Palace Artykuł Vaillant Eco Tec ‘Con’ error code pochodzi z serwisu Urban Plumbers Ltd..

Baxi error code E133 – ignition lockout
type: item
creator: URBANPumbeRAdmin
date: 2020-01-11T13:15:09Z
subject: Articles
description: E133 error code on a Baxi/ Potterton / Main boiler is an ignition lockout fault code. This error code that covers a wide range of possible faults connected to gas and igniton. In most cases you will need to contact a competent boiler repair engineer but there are some steps you can take yourself before […] Artykuł Baxi error code E133 – ignition lockout pochodzi z serwisu Urban Plumbers Ltd..
encoded: E133 error code on a Baxi/ Potterton / Main boiler is an ignition lockout fault code. This error code that covers a wide range of possible faults connected to gas and igniton. In most cases you will need to contact a competent boiler repair engineer but there are some steps you can take yourself before booking a repair: check if gas supply is turned on – if you have a gas hob see if there is gas coming to the gas hob. You can also check if your gas meter ECV (Emerngecy Control Valve) is turned on parrarel to the pipework check if your meter has credit (Pre paid meters only) if outside temperatures are below zero – check if condensate pipework is frozen. If it is pour hot water over the pipework. check if your condensate pipework is not blocked If above steps did not help you will need to book a professional reapir. E133 error codes can be split into 2 groups (provdied that the error is not caused by lack of gas or frozen or blocked condensate pipework). First group is when boiler does not ignite at all. (Flame led does not illuminate and there is no flame visible in the sight glass) Possible causes in this case are: faulty gas valve faulty wiring between gas valve and PCB faulty PCB faulty ignition module faulty igntion electrodes gas valve out of calibration – wrong mixture of air/gas Second group of E133 error codes happens when boiler does ignite (flame led illumiates for a short period and flame is visible in the sight glass) – but goes out shortly after. In this case list of possible faults is shorter as we know that the gas valve opens and that igntion module is working fine. List of possible faults is as follows: gas valve out of calibration – wrong mixture sensing electrode faulty out of alignment sensing electrode wiring PCB Below you can see a video of a E133 Baxi Duo Tec boiler under fault condition. In this case the boiler would not fire up at all. The pump and fan would come on at full speed and there would be audible click / clang noise.The noise would…