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I have a micron 50ff?

The heating is constantly on when hot water is on on constant. The system has 2 2 port valves with 1 side of lever staying on auto the other side says main. It is always in auto position. What is likely to be the cause for heating staying on always. If anyone can help it woul be appreciated. Oh and also the same as others have mentioned I have to keep resetting the boiler. Thanks
Jeff, July 2016