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    Idear isar HE35 no hot water, only CH

    My Ideal Isar HE35 has stopped firing up when a hot water tap is turned on. The boiler fires up and sends hot water to the radiators if I push the thermostat up high enough for it to kick in, so I know the boiler works., but only for CH. I thought it might be the diverter valve, but this...
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