Search results

Thanks a million for the invaluable advice. I don't suppose you could tell me how to make any other checks before pinning the problem down to a faulty PCB? The Pump seems to be working as when I touch the pump while the boiler is ON, although it's quite hot, there's some degree of vibration...

Hi I have exactly the same problem. The HW can go stone cold any time during a shower and then the boiler has to be restarted. The Temp starts to go up and then sometimes remains high with bursts of hot and cold water or the water can go cold again after 1 min or so. Model: Vaillant Turbomax...