I'm a newbie to this, so please be patient with me ...
I have installed a Switchmaster 805 and I believe I must have the wiring incorrect as I can't have both heating and water on at the same time, and the unit is constantly making a buzzing noise ....
Please help .....
I have installed a Switchmaster 805 and I believe I must have the wiring incorrect as I can't have both heating and water on at the same time, and the unit is constantly making a buzzing noise ....
Please help .....