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    F22 vaillant

    I haven't charged anything so far, and wont until i fix their boiler. Replacing NTC solved that problem in the previous 50 boilers or so that i fixed so far. Im conscious about price hence my question about being sure its the PCB and finding the best price. Diagnosing a pcb involves taking it...
  2. B

    F22 vaillant

    Hi Guys, One of my Customer is regularly having the "classic" F22 error (low water in Appliance) on a turbomax plus 824E. I always keep a lot of spares in my truck, so I replace the sensors on each side of the heat exchanger. Initially I thought it did the job, but I was called a few days later...
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