How to - remove the Vaillant F70 Fault Code after changing the PCB 

Glad to have helped, please feel free to let us know what else would be most useful to you in terms of your boiler and heating.

Hi Valentin, glad it helped you. Feel free to subscribe to support us. Also this may help you myboiler.com/energy-saving/ , feel free to submit feedback for improvements. Section 2 (Boiler adjustments) is most useful for modern Vaillant combi boilers. JK

Hi, really glad it saved you time and stress, and really glad to have helped. If you boiler is a combi boiler then for helpful energy saving information, please see myboiler.com/money-and-energy-saving/?source=ytc Section 2 boiler settings to help reduce your gas usage for condensing boilers and other tips. JK.

Glad it helped. Feel free to request any other videos that may be useful for you. JK

Hi, so glad it helped you. If you have a combi boiler, you may also find useful our article on condensing boiler efficiency savings. myboiler.com/reducing-the-flow-temperature-for-a-condensing-combi-boiler-for-upto-8-percent-saving-on-your-gas-heating-bills/ , JK

Faulty display and / or pcb possibly. JK

Glad the video helped. Feel free to let us know if there are any other videos that you would like to see or improvements to the F70 webpage. JK

Follow the article shown in the description, it will help you find your settings. JK

Hi, most likely this is caused by the boiler having overheated. This will require an engineer visit. Perhaps ring Vaillant and get one of their engineers on fixed price repair. JK

Hi, I am not able to read/speak german. However based on translation and prior knowledge I found the following manual for your boiler www.vaillant.be/telechargements/documents/notice-installation/chaudi-res-murales-gaz-1/notice-dinstallation-ecotec-exclusiv-146-206-276-319075.pdf , Page 38 contains the DSN offset (showing as DSN 6 for your boiler). If this is not the correct manual, you need to find the correct manual and locate the information this way otherwise you will need to get into contact with Vaillant technical. Please note, we cannot be held responsible for this information should problems arise, as it is provided in good faith. viel Glück . JK

It’s written underneath the boiler on the databadge. JK

@@MyBoiler many thanks for your response, but underneath the boiler is written: hrSOLIDE VHR NL 24-28/C, it does not say which eco-tec boiler it is. So I don't know which type number I have to select in the tabel on your website?

@@MyBoiler Sorry, it says hrSOLIDE VHR NL 24-28/3 C. Do you know which Value I have to choose out of the table on your website?

10 as per PCB replacement manual for VHR NL 24-28/3 C. Please note, this PCB replacement should normally be carried out by a professional. JK

@@MyBoiler thank you so much! I got it up and running again thanks to your video and your assistance!

Hi, if it has suddenly done it, then yes, likely the board has an issue and is not able to read the dsn settings correctly, you can get an engineer to try unplugging and replugging the cables, just to make sure. JK

@@MyBoiler ok that makes sense, thanks for the speedy reply, I hope your business is doing well, enjoy your Sunday 🤘

Hi, hard to diagnose remotely without seeing the boiler, however usually it’s more than likely that the symptoms point towards the pump or fan. You need to test them electrically to confirm. JK

@@MyBoiler new water pump. Works a treat thanks very much 👍

Following information is for competent persons and should be used with caution: Press top 2 buttons at same time ie i menu. Click the button shown under the spanner ie top right. Set code to 17. Navigate D code menu using plus minus buttons to D.093 Change to correct DSN number Press Tick to confirm.

@@MyBoiler where do I find the dsn number??

@@LuisFreitas10 Click the link underneath the video, you may have to press "SHOW MORE"

Hi, follow the vaillant f70 article page. If your unable to follow, you will need a heating professional to attend. JK

Hi, not if there are multiple errors. Usually this requires a heating professional to diagnose further. If you have already solved this, then apologies for the late reply, your message was held for review. JK

Nie ma za co

Hi, unfortunately this video only covers Vaillant boilers, although the protherm may use the same PCB, you will need to obtain protherm specific information and setup sequence. If we manage to find out, we will send you a reply. Jay (MyBoiler Ltd)

Hi, make sure your flow temperature is increased from default, which may be off. Which model do you have? JK

This one is a system boiler. Older type model. Are you having issues on a particular model? JK

@@MyBoiler mine is a ecotec plus 831, i have just brought a pcb board and i am going to fit it tomorrow. Faults 61 and 62 but mostly 62. When starts up the temperature flickers from 61 to 75 on the last start up?

@@MyBoiler any advice on changing the board please? I am a refrigeration engineer by trade and have changed lots of boards on them

Hi, was going to say if you don't possess basic electrical skill levels then don't attempt it without caution otherwise you may break something essential. As your a professional, just remember to not force any of the components to come out or they may break, gentle prying and finding all the locking points. Make sure if you have older type vaillant, remove the display pcb. You may need to dislodge the the control knobs carefully too. Components within a boiler sometimes tend to get brittle, as they may also do in refrigeration equipment. Replacing the board is generally done in about 5 mins. The programmer takes a few minutes too. The article also contains the programming codes and method. All this information is provided in good faith, and we cannot accept responsibility as a consequence. JK

@@MyBoiler thanks for that, do i need to adjust all the settings. I thought because it was a board for the same model its just a straight swap. Only thing i have seen online is the f70 fault that you need to change? Which looks simple. When you heater knobs, do i have them on set to full heat when i detach and attach the new one.

Offset table can be found here; myboiler.com/fault-codes/vaillant-ecotec-f70-repair/ , let us know if your particular model is missing. JK

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Also, if you have a combi boiler, you may also find useful our article on condensing boiler efficiency savings. myboiler.com/reducing-the-flow-temperature-for-a-condensing-combi-boiler-for-upto-8-percent-saving-on-your-gas-heating-bills/ , JK