Issue - The problem is that the FCP-500 smoke heads are going into trouble then alarm then back to normal all by themselves. The LED blinks green every 8 sec, then double flashes, then flashes red, then back to normal.
Check to see if there is enough filtered DC current to run all the smokes. Use an alternate power supply or a 12 VDC battery and see if the heads operate normally. Also verify the heads are calibrated correctly using the following the procedure.
*Note - After installation each detector must be calibrated. If there are any obstruction in front of the detector after the reset during its calibration (Electronic Function Test) the sensitivity of the detector may be affected.
Electronic Functional Test
Remote LED Output: 20 mA maximum