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Domestic hot water and heating series: gas hot water boiler, vacuum hot water boiler, vertical atmospheric pressure hot water boiler, electric hot water boiler Factory use, high temperature steam: wns fuel gas steam boiler, szs water tube steam boiler, vertical steam boiler, electric steam boiler

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FANGKUAI is founded in 1998, which is a clean fuel boiler enterprise integrating R&D, manufacturing, sales and service. In the past 20 years of development and innovation, the company has grown into a global enterprise, and its products have been exported to more than 80 countries including Russia, Mongolia and Thailand, and have established long-lasting cooperative relations with local enterprises!

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Vaillant Boiler Error Codes Herofix

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Popular products


θrion Gas Fired Steam Boiler


Rated thermal efficiency: 100-104%

Fixed working pressure: ≤1.6MPa

Applicable fuel:natural gas etc.


Gas(oil) Fired Integrated Hot Water Boiler


Rated thermal efficiency:96-98%

Fixed working pressure:≤1.25MPa

Applicable fuel:Natural gas, light oil, etc.


H6 Gas Fired Hot Water Boiler


Rated thermal efficiency: 97.2-106%

Fixed working pressure:0.1MPa

Applicable fuel:Natural gas, etc.


T7 Vacuum Hot Water Boilerr


Rated thermal efficiency:≥105.5%

Fixed working pressure:-0.02MPa

Applicable fuel:Natural gas, etc.


V6 Gas Fired Hot Water Boiler


Rated thermal efficiency:97.2-104.4%

Fixed working pressure:1.0MPa

Applicable fuel:Natural gas, etc.


Electric Steam Boiler

Capacity:0.5-4.0 t/h

Rated thermal efficiency:98%

Fixed working pressure:≤1.25MPa

Applicable fuel:electric energy


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  • Ask Vaillant | Domestic Boilers | Vaillant

    You may have asked for information on a Vaillant fault code. Please take a look at the boiler fault codes below. Don't worry if you have one of these, it does'nt neccessarily mean your boiler is at fault. Your boiler may just need resetting or you have an issue that is easily resolved. You can find more information on resolving issues by Get Price

  • Boiler Fault Codes - A guide to identifying your boiler's

    B7 – Replace control board. C6 – Running too fast / Running too slow. C7 – Fan not running / Fan not running or airflow blocked. D1 – Sensor wet or damaged (the boiler will block for 300 seconds before this condition) D1 – Boiler overheat. E2 – Flow sensor shorted or damaged. E2 – Flow sensor disconnected or damaged.Get Price

  • Vaillant S Codes New –

    Vaillant S Codes New. Heating has no heat demand. The burner is off. The fan start-up for heating mode is activated. The pump prerun for heating mode is activated. The ignition for heating mode is activated. The burner for heating mode is activated. The pump/fan overrun for heating mode is activated. The fan overrun for heating mode is activated.Get Price

  • Vaillant Boiler Fault Codes

    In the event of LOCK OUT, turn knob against the tension spring 'clockwise' up to the flame sign, and release. The most common fault codes for this model: F.00 NTC Faults. F.01 NTC Faults. F.20 Overheat Problem. F.22 Dry fire, low water in system/Overheat. F.24 Low water, or Pump failure/blockage.Get Price

  • Vaillant Boiler Fault Code F.28 and F.29 - YouTube

    This video is about Vaillant Boiler Fault Code F.28 and F.29. This fault relates to EcoTec, Turbomax, Ecomax boilers. Check your gas supply is turned fully oGet Price

  • Vaillant combi boiler problem.. no error code on display

    Sep 03, 2019 · Power off the boiler and drop down the lower front controls panel. Unscrew the large knurled collar securing the black motor head to the brass diverter valve (located on the left). The motor head will "unclip" with a little wiggling. Note how the actuator pin locks into the corresponding pin inside the diverter body.Get Price

  • vaillant s53 fault -

    Feb 02, 2021 · 2,477. Sep 5, 2012. #3. S53 is usually down to circulation or lack thereof. The boiler goes into low fire and waits until there is a permissible difference between flow and return. Its not an actual fault of the boiler. The S part is a status code. I've had this on a badly designed (& fitted) system before and apparently it was quite common on Get Price

  • Vaillant Boiler Error Codes (Status Codes) - Mr Engineers

    May 03, 2015 · Office Hours Monday–Friday: 9:00AM–8:00PM Saturday & Sunday: 11:00AM–3:00PM. Emergency Services. Open 24 hours 7 Days per WeekGet Price

  • Common Vaillant Boiler Faults and How to Fix Them

    Jun 14, 2021 · Low Water Pressure. Low water pressure will affect all boilers at some point in their working life, and your Vaillant boiler should be monitoring the water pressure in case it drops below the normal level, which is typically 1 – 1.5 bar.. Anything below 1 bar is considered under pressured and this issue is a common feature in the Ecotec Plus and Ecotec Pro models, …Get Price

  • Vaillant Fault Codes -

    If you have any Vaillant Boiler Fault Codes appear and are not sure on how to resolve it, then contact us and arrange for an engineer to call and clear the …Get Price

  • 6 Causes of Vaillant F75 and Glowworm F9 - Boiler Boffin

    The F75 Fault code on the modern range of Vaillant Boilers (including the EcoTec Plus, Ecotec Pro, Ecomax and EcoFit) and the F9 / F75 Fault code on modern Glowworm boilers (including the CXI, SXI, Flexicom, Energy and Betacom) is probably the most common fault that we attend. It is usually a fairly simple fix,Get Price

  • boiler showing no error code -

    Oct 29, 2019 · Just had the Vaillant engineer in, and the problem was a small mesh circular strainer (I don't know the technical term) - the inlet for the water inside the boiler - seemed to be totally clogged with what looked like pale beige mastic or something.Get Price

  • Vaillant Boiler F.75 error code - Digital Spy

    Feb 14, 2010 · 14/02/10 - 17:48 #4. CaptMcMallister wrote: ». F75 is the pcb not acknowledging the pumping kicking in from the sensor measuring the change in pressure. Most likely cured by changing the sensor, its a known issue with the Ecotec plus range (I assume that's what you have as you haven't told us). Its an Ecotec pro 28 ..Get Price

  • Vaillant Boiler Fault Codes Find Your Vaillant Fault Code

    Vaillant Boiler Fault Codes Find Your Vaillant Fault Code Get Price

  • Vaillant Boiler Problems, Repair Advice & How to Fix

    We've put this guide together to highlight some common Vaillant boiler problems and how to resolve them. Some faults will always need an engineer, and if in doubt always contact an engineer, you can get a free boiler repair quote using Boiler Guide.Get Price

  • Vaillant Boiler F83 Fault - Error Code - Price This Please

    Dec 01, 2020 · This website is a participant in the Amazon Services LLC program, an affiliate advertising program designed to provide means for sites to earn advertising fees by advertising and linking to Price

  • My Vaillant Boiler Is Not Working: No Error Code - Rowlen

    We rely so heavily on our boiler heating systems that it is imperative we get them back up and running promptly if something goes wrong. Being without heating or hot water has a considerable impact on our daily life, so it helps identify quick fix issues and know how to…Get Price

  • Vaillant Boiler F75 Fault Code: How To Fix It

    Jan 20, 2021 · How to Detect A F75 Default Code Pump Defect. Reset the boiler. You do this by pressing the lockout button – the one with a symbol of a flame on it. Wait for a few moments then run a hot water tap. This will fire the boiler. When a boiler is fired, the heating pumps kicks in and sends the water to the tap.Get Price

  • Common Vaillant boiler problems & fixes - Homecure Plumbers

    Nov 27, 2020 · Absolutely brilliant service by Homecure. We have had an ongoing issue with our troublesome boiler for a few months now. We have had several companies in over that time but no one had seemed to solve the issue with many people advising to change the boiler even though it wasn't even 10 years old.Get Price

  • Vaillant Boiler Error Codes / Fault Codes List | WarmZilla

    Vaillant Boiler Problems, Repair Advice & How to Fix 2021Get Price

  • Top 10 Most Common Boiler Problems - Vaillant

    One of the most common boiler issues is a boiler leak. Leaks can be a nuisance because not only can they cause water damage to a home, but water can also cause electrical components in and around the boiler to malfunction. A leaking boiler can be due to a number of things: Excessive boiler pressure. Corroded pipes or tanks.Get Price

  • Herofix - Video Plumbers | Plumbing Help Online | Click Now

    Mar 31, 2020 · The F.52 and F.53 fault codes indicate a fault with the mass flow sensor, that is located just behind the gas valve connecting to the fan on Vaillant Ecotec boilers. There may be several causes of this fault, either mechanical or electrical.Get Price

  • Vaillant Boiler Error Codes | Hometree

    Listed below are the most common fault codes that you might see if you have a Vaillant ecoTec Pro boiler installed: Message. Possible cause. F.00 Interruption: Flow sensor. Flow temperature sensor defective or not connected. F.01 Interruption: Return sensor. Return temperature sensor defective or not connected. F.10 Short circuit: Flow sensor.Get Price

  • Vaillant ecotec 466 boiler f.75 5er code? = Answered

    Vaillant Heating, Home Heating Systems Vaillant Boiler Fault Pressure. Areas to check: Look towards the pump. F.75 not only refers to the sensor, but not sensing pump movement, if the pump is too slow, this fault can occur. pcb, I haven't a clue whether you have a pro or plus type boiler, but the pro is 3 wire to the pump, the plus is 5 wire Get Price

  • Vaillant 428, SFH code | DIYnot Forums

    Sep 03, 2019 · Sheffield. Country: Wired up the boiler, have this code SF.H flashing, and sometimes it comes on and sometimes it does not. Pump is also on. Nothing in manual. any ideas. Wiring is correct and checked again and again.Get Price

  • Alpha Boiler Error Codes - Boiler Fault Finder

    Flashing red A or B. Alpha C23, C27 CB, CB50, CD50, CDC, CDR, CDS, CDX, HE, HECB, HESY. Overheat thermostat has operated / Temperature sensor fault. Rotate selector switch to the reset position (3) to reset. Flashing yellow every five seconds or Illuminated Green D.Get Price

  • Vaillant Boiler F72 Fault Code NTC thermistor

    The Vaillant F72 is a NTC thermistor fault, if your looking for more information then feel free to visit us, we also include a serviceGet Price

  • Boiler Error Codes - boilerPRO

    boilerPRO in Esher are Plumbing & Heating Engineers, servicing Surrey & South-West London, in all things Plumbing & Gas related. Call now on 01372 620 621 - Boiler Get Price

  • Vaillant Boiler Error Codes

    Fault Code Possible Cause; F.1: Lack of gas, a fault with the ignition or flue, or you may need to adjust the gas valve or replace a defective electrode lead.Get Price

  • 2022 Vaillant Boiler Error & Fault Codes Explained

    Vaillant Boiler Error Codes / Fault Codes ListGet Price

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