hi ,i have a vaillant turbomax ,about 8 years old and got a hot water problem. when I turn hot water tap on green light flashes to show demand , yellow ignition light comes on and boiler fires for 2 seconds then shuts off. then it fires again for 2 seconds and shuts off , does this constantly. heating works fine when on but if I open hot water tap does exactly same on then off. At the tap runs hot then cold , hot then cold. pcb board has been changed for new one but made no difference, any ideas please
vaillant hot water problems
- Thread starter garyjohnm
- Start date
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It won't make a difference as the PCB isn't at fault. Just a huge waste of money. After decades in the trade I can never work out what it is people think the PCB actually does. Do a forum search on your symptoms, your fault is covered almost daily.
sorry to be a pain have not used many forums before ,I have tried to do a forum search with out much success, can someone point me in the right direction or give me a couple of options what the problem could be thanks gary
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Your domestic heat exchanger is clogged and needs a clean or replacing.
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