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Combi boiler

Postby Bayardmm » Thu Jun 11, 2020 5:59 pm

My combi boiler has started to heat tap water just when sitting idle, resulting in seriously hot water when the hot tap is turned on. On examination the temperature is 80 degrees, considering the system should be limited to 60.
Anyone have any suggestions.
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Simply Build It

Postby ericmark » Sun Jun 14, 2020 9:22 am

Get some one in to look at it, not a DIY job.
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