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The Hot Water Time & Temperature addon is made up of two parts

1. The Electric Switch (which is wired into the mains, communciates communicates with the Genius Hub and can switch an immersion heater of less than 13A.

2. The Tank Temperature Prove (which measures the temperature of the hot water tank

The Electric Switch is reporting that the Tank Temperature Probe has become disconnected.

To fix the connection of the Tank Temperature Probe to the Electric Switch:

Note: We recommend using a qualified electrician for all electric works.

1. Turn off the power to the Electric Switch, this should be possible by turning off the switched fused spur near the Electric Switch.

2. Check the power is off by pressing the button on the front of the Electric Switch. If the power is off, no red lights will appear on the device.

3. Remove the cover from the Electric Switch.

4. Undo the 2 screws which attach the Electric Switch to the pattress box.

5. Wire the Tank Temperature Probe back into its dedicated terminals near the bottom of the Electric Switch. Note: the Tank Temperature Probe wires do not have a right way around. Each wire can be wired into either terminal.

6. Re-fasten the Electric Switch, re-attach the cover (starting at the top) and power on the Hot Water Time & Temperature addon.