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    What is a Printed Circuit Board (PCB)?

    A Printed Circuit Board, commonly known as a PCB, serves as the central processing unit of a boiler, essentially acting as its ‘brain’. Responsible for controlling every function, PCBs are integral components found in a wide array of appliances, spanning from boilers to warm air units and fires.

    The PCB is also responsible for safety. So, before the boiler can ignite, the PCB will send a signal to the fan to turn on. The boiler cannot ignite if the fan isn’t working as it is essential for harmful exhaust fumes to be extracted from the boiler. 

    How long does a PCB last?

    Most modern boiler PCBs will last around 50 years in the right conditions. However, to proactively enhance the lifespan of the boiler circuit board, it’s essential to be able to identify potential causes of PCB failure. By doing so, you’ll be equipped to recognize when it’s time to seek a replacement boiler part and take the necessary steps to engage a Gas Safe engineer.

    How to check if  boiler PCB is working?

    The boiler PCB functions as an internal electrical component, detecting faults that impede its operation can pose a challenge. To navigate such scenarios effectively, it’s beneficial to be aware of certain indicators suggesting potential issues with your boiler’s PCB.

    When checking if a boiler PCB is working you may notice:

    • Burning smell
    • Blank display screen
    • Memory fault
    • Loose wiring
    • Early boiler shut off

    You can find more information on Printed circuit boards on our blog.