My Ravenheat RSF 82E Fanned Combi Boiler is very temperamental regarding the temperature of the Hot Water. Sometimes the water is barely warm (not hot enough to wash dishes) then later that day it is very hot. The water temperature is set at its highest level. It does seem like we only get HOT water when the radiators come on. Any Ideas what the problem could be?? The boiler was installed Aug 2001 and has been regularly serviced.
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