MSA GM FL5000 - 7 Troubleshooting

7 Troubleshooting
US FL5000 Multi-Spectrum Flame Detector 39
7 Troubleshooting
This section is intended to be a guide to correcting problems, which may arise in the field. MSA should be contacted for
assistance if the corrective action listed does not eliminate the problem. Defective units should be returned to MSA for
repair with a complete written description of the problem.
NOTE: If the equipment is under warranty, any repairs performed by persons other than MSA authorized personnel may
void the warranty. Please read the warranty statement carefully.
WARNING!
Be sure to inhibit or disconnect external alarm wiring before making any check that might send the unit into alarm.
Failure to follow this warning can result in serious personal injury or death.
Problem Possible Cause Corrective Action
Analog output signal = 0 mA and green
LED in window is off
No DC power to the Unit Be sure that the +24 VDC is applied with
the correct polarity
Analog output signal = 0 mA (3.5 or
1.25 mA with HART) and green LED in
window is rapidly blinking
Low voltage FAULT (voltage at unit
is approximately +18.5 VDC)
Be sure that the unit is powered with at
least +24 VDC under load
Analog output signal = 0 mA (3.5 or
1.25 mA with HART) and green LED in
window is rapidly blinking, +24 VDC
verified
Flash Checksum Not OK Re-cycle power to the unit
Analog output signal = 0 mA (3.5 or
1.25 mA with HART) and green LED in
window is rapidly blinking, +24 VDC
verified OK, power was re-cycled
Flash Checksum Still Not OK Call MSA customer support
Analog output signal = 2 mA (3.5 mA
with HART and small current disabled)
and green LED in window is slowly
blinking
COPM FAULT, dirty or obscured
optical path (detector window)
Clean the window and reflector
Dipswitch settings do not match those
observed in the operation of the
detector
Device settings may have been
changed by either HART, Modbus
or Bluetooth and no longer
correspond to those on the
dipswitch
Recycle power to the unit while
connecting the test IO terminal to ground
(refer to 5.9 Power Up Grounding of the
Test and Relay Reset Lines). After
startup, adjust settings via dipswitch as
described in 5.7 Switch Selectable
Options.
Troubleshooting Bluetooth Errors
Blue LEDis not flashing during start up
or manual activation.
BLEdipswitch is off or connection is
lost.
Ensure the BLEdipswitch is ON and the
BLEconnector is completely in its socket.
Blue LED is flashing, but the device is
not pairing with the FL5000 on the app.
The device is too far away from the
FL5000 to connect, or there is a
weak signal preventing connection.
Move the user closer to the FL5000 or
move to a different location if there is
potential sources of interference between
the device.
Blue LEDis on for > 5 minutes after
disconnection.
The FL5000 is still connected with
the user's device.
Turn off Bluetooth connection on the
user's device or recycle the FL5000's
power.