I recently replaced an old Sunvic tlm (rotary type) thermostat with a TLX 7501 digital, however when I found three wires on the old thermostat, i presumed that the neutral wire (blue) wired to the ON terminal and the live (red) to the COM terminal leaving the yellow to be wired into the remaining terminal. however the unit shorted out and now the heating will not work. I have checked the main fuse box but nothing has blown. Can anyone tell me where to the fault or fuse may lie? :(
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