Hi all,
I came down in the morning to my Viessmann's fan running flat out, but no heating, and a completely blank display (so no error code!) and no lights illuminated.
With these symptoms, I assumed it was the PCB so bought a brand-new-sealed-old-stock one and fitted it this morning. My mistake.... it showed F0 error for a few seconds and illuminated the 'reset' light, before going dead like the previous one Investigation shows that one of the soldered-in 400mA PCB fuses has blown, in the area of the power supply on the circuit board.
So, it's clear something is blowing up the PCBs. Is anyone familiar with this particular problem and these symptoms on this boiler?
I'm loathe to throw good money after bad... the boiler is 16 years old, but I would quite like to repair it if it's economic to do so.
Thanks for any ideas!
I came down in the morning to my Viessmann's fan running flat out, but no heating, and a completely blank display (so no error code!) and no lights illuminated.
With these symptoms, I assumed it was the PCB so bought a brand-new-sealed-old-stock one and fitted it this morning. My mistake.... it showed F0 error for a few seconds and illuminated the 'reset' light, before going dead like the previous one Investigation shows that one of the soldered-in 400mA PCB fuses has blown, in the area of the power supply on the circuit board.
So, it's clear something is blowing up the PCBs. Is anyone familiar with this particular problem and these symptoms on this boiler?
I'm loathe to throw good money after bad... the boiler is 16 years old, but I would quite like to repair it if it's economic to do so.
Thanks for any ideas!