If our electrical power is cut (fuse blows etc) then the alarm on our Santo K7 12 03-7i starts and the only way to stop it is to unplug the appliance. Any attempt to reinsert the plug means that the alarm starts again. This has happened several times over the past five years and each time we have had to wait for several days before we could successfully reinsert the power plug and reuse the appliance. This means that each time the frozen produce is lost. How can we solve this problem? Please help!