M a i n t e n a n c e s e r v i c e
18
MRBP.424321.001UM Version 1.0 27/01/2020
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LED
«
Failure
»
is flashing (flashes once for 300 ms every 3 seconds);
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3 years passed since the battery replacement.
Battery replacement routine:
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turn off the power supply of the control unit and the devices connected to it;
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disconnect the terminals;
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remove the control unit from DIN rail;
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undo the 4 screws on the back of the device;
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alternately remove the hooks from the holes on one and the other side of the body and re-
move
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bottom cover.