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how do I fix bf fault in my alarm?

The alarm keeps going off
Rohit, January 2013
Searched 'bf' then, top of the page, on the right.

There is not a 'unique' question here, you managed to find this place, then expect everyone to do the job for you!

Disgruntled acorn, January 2013
As with most answers here. what does 'bf' mean then? It's in your manual, Battery FAIL, replace it.

acorn, January 2013