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Mend Isar HE30 Boiler Problem Three Radiators

Isar HE30 combi boiler?

Have a problem with my boiler, its been ok for the three years I have had it, but lately when I have a shower the upstairs radiators heat up even though the thermostat is set to off. the shower and hot water are working fine, as is the heating when called for from the thermostst, anyone got any ideas please

Michael Rice
April 2011
IsarIsar HE30Heating, Home Heating SystemsBoiler Problem Three Radiators
probably the divertor valve needs repairing the shower is causing a lot of resistance to the h/water flow and is opening the divertor

brian
April 2011

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