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Fluctuating / jumping temperature on Vaillant boiler / How to replace PCB / Motherboard step by step 

B Heating Service
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Fluctuating / jumping temperature on Vaillant boiler / How to replace Printed Circuit Board / Motherboard step by step
This video is for GAS SAFE ENGINEERS only, always follow manufacturer instructions.
Before to start any work on gas appliance isolate the power, turn off the gas and the waters.
1. Download manual
professional.vaillant.co.uk/d...
2. Remove front cover
3. Remove PCB cover
4. Disconnect cables
5. Replace PCB
6. Reconnect cables
7. Test it

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19 май 2024

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Комментарии : 4   
@kamaldahal4672
@kamaldahal4672 Месяц назад
Thank you
@bheating
@bheating Месяц назад
You're welcome
@kamaldahal4672
@kamaldahal4672 Месяц назад
Nice video but if you explain bit on issues and how to rectify would be more helpful to learn, tks
@balintistvan1551
@balintistvan1551 Месяц назад
You can diagnosis easy, if you turn on the heating wait approximately 5-10 min and check the boiler display. The heating will come in and it’s gonna show a temperature and it will jump on higher temperature and then back to lower temperature. This will indicate you have a PCB fault.
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