Issue
Control trouble # 87 displays Battery Trouble.
Probable Cause:
The battery failed a battery test
The battery is defective
The wiring to the battery is disconnected
Solution:
If there has just been a power failure, wait a least 24 hours for the battery to recharge, then perform a system reset to re-test the battery and clear the error
Replace the battery.
Check wiring.
Issue
D8112 Displays CPU FAIL.
Solution
D8112 Displays CPU FAIL
Remove Data wires from terminals 30 and 31.
Copy the panel via RAMii, RPS or D5200 and save the copy.
Send the panel a NEW RECORD or Blank Account. (Basically set the panel back to factory default.)
Reload the regional copy back in the panel.
Reattach the Data wires to terminals 30 and 31.
If still in CPU FAIL - Rewrite the saved copy of the program and save as a different file name.
Remove Data wires from terminals 30 and 31.
Send the panel a NEW RECORD or Blank Account.
Send the new file into the panel.
Reattach the Data wires to terminals 30 and 31.
If still in CPU FAIL - replace the panel.