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    Viessmann Vitodens 100 WB1A Fault

    Hi Tony, Just to let you know I reduced the flow rate as advised and it see s good. Thankyou for your advice and also to others for their inPut. Regards, Dawson
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    Viessmann Vitodens 100 WB1A Fault

    Thanks Tony, I will try this.
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    Viessmann Vitodens 100 WB1A Fault

    Thanks John, I will just turn up the heat a little at the boiler and see how it goes.
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    Viessmann Vitodens 100 WB1A Fault

    I have just run off 5L of hot from the kitchen tap in 20 secs from a cold start and ended at 32 deg C. Very basic method!
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    Viessmann Vitodens 100 WB1A Fault

    No not really. It was cold before Christmas too, but the boiler seemed ok then. The missus like a bath you see, but I always shower.:)
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    Viessmann Vitodens 100 WB1A Fault

    Since around Christmas time.
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    Viessmann Vitodens 100 WB1A Fault

    The water goes warmer.
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    Viessmann Vitodens 100 WB1A Fault

    Hi Peeps, I have a fault developing on the above boiler and have had expert advise from this forum in the past, hopefully someone can help me again. The boiler DHW is playing up, (CH is fine though). We have noticed the hot tap (but ONLY on the Bath, which is a mixer/shower tap with wide...
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    VIESSMANN VITODENS 100 COMBI/CONDENSOR - NO HOT WATER

    All sorted thanks. Found the pipe which carries the flow switch gummed up with black deposits. I cleaned this out plus the heat exchanger and all is fine. Thanks to everyone.
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    VIESSMANN VITODENS 100 COMBI/CONDENSOR - NO HOT WATER

    Hi, Type wb1a. Central heating off, no noise from boiler. Thanks, Dawson
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    VIESSMANN VITODENS 100 COMBI/CONDENSOR - NO HOT WATER

    Central heating is working fine, but now no hot water at all. Last week the hot water temp was up and down, but now I can't even here the boiler firing up on demand. Any ideas? Dawson
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    DHW temp fluctuation with viessmann vitodens 100 combi

    Hi, I have a viessmann vitodens 100 condensing combi boiler. It has been fine until now. The water temp. when in the shower fluctuates, warm, then cold then back warm again. It repeats this until shower is turned off. I have metered the boiler temp sensor, and according to the book at 50 degrees...
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