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hi mick, its been on for the last yr, it was changed because the timer was broken on the old one, but today i changed the thermostat in the hall wired it correctly , it all went well then when i went to change the settings on the program from hw to ch it just disappeared,so im assuming that the...

hello i installed a sunvic 207 xls controller for my back boiler it worked for a while then stopped, the screen shows no reading, have i blown the controller or a fuse some where i cant find ,the power box fuses to the house are all working . thankyou