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The batteries are flat in the Genius Radiator Valve and the valve will have stopped working altogether. .Remove the battery cover. Do this by placing a fingernail at the bottom of the battery cover, pulling the catch up (in the direction of the screen) and compressing the slit next to the catch. The battery cover hinges at the screen end of the valve. |
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Select the Genius Radiator Valve with the flat battery
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