replaced diaphragm, switches, and hot water sensor. Hot water kicks in when taps turned on, but bolier not return to Central heating or standby, but stays running constantly. Any ideas please please please
Replaced diaphram, hot water sensor and swtiches. Central Heating fine, hot water fine upstairs but shower in upstairs bathroom and kitchen hot tap downstairs does not seem to ignite bolier so no hot water. I'm stumped. Already cost me to get plumber out - is this a simple problem?
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