Remover the transport lock of the button cell battery. If you do not remove these, the filter times will not be saved in the event of a power failure. Check the battery and replace it if necessary. Button cell lithium 3V CR2032
Remover the transport lock of the button cell battery. If you do not remove these, the filter times will not be saved in the event of a power failure. Check the battery and replace it if necessary. Button cell lithium 3V CR2032
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