We inherited an alarm system (9800 is only identifier) when we moved here 12 years ago, and till recently it's functioned perfectly although we have never had it serviced. Now, we are getting bF fault code and internal buzzer every now and then on the contol panel located in our hallway which can be cleared by inputting the user code twice, so it seems that a new back up battery is required I guess. I suspect that the battery is located in a plastic box in our roof space next to a fused spur.
Can anyone give me a precises step-by-step guide to doing this? Can I remove the battery to find out what I need to buy, or should I buy one in advance, if so which one should I get? Any advice much appreciated
Can anyone give me a precises step-by-step guide to doing this? Can I remove the battery to find out what I need to buy, or should I buy one in advance, if so which one should I get? Any advice much appreciated