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Mend Halstead Ace High Hot Water Works

na hot water with halstead ace high?

i have had a halstead ace high fitted for about 18 months.the heating works ok but i have no hot water.I do not think the old system was flushed before the halstead was fitted.a plumber has told me that it is likely to be the thyristor valve or the flow switch.could anyone please tell me if it is likely
to be any of these parts or something completly different.
thanks

kevin brown
April 2008
This is a common problem and is most likely to be due to a faulty DHW (Hot Water) flow sensing diaphram.

Derek Carpenter
June 2008

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