20
Amico Corporation
Troubleshooting
Symptom
Cause
Corrective Action
An error or “LOW ALARM” LCD screen
The Microprocessor detected a fault and
has shut down
Switch power switch to OFF position. Wait for
at least 5 seconds before switching ON the
power. The program will reset itself.
Faulty wire connection between the
sensor and LCD module
Check wiring diagram in Appendix D and
Appendix E.
No power on the alarm
AC power not available
a. Ensure that the ON/OFF switch on the
power supply module is switched ON
(see Appendix B).
b. AC wiring not connected.
c. Check the building electrical breaker to
ensure that the power is ON.
d. Check the voltage at the terminal block
above the transformer. Ensure that 115
VAC to 220 VAC is being supplied.
Fuse is blown
Check the fuse. The fuse is located on the
upper-right corner of the system power
supply. Replace the fuse if it is defective (see
Appendix B and Appendix G).
DC power plug not connected to the LCD
module
a. Ensure that the DC power plug is firmly
in its socket on the LCD alarm.
b. Replace the System Power Supply unit
if all the above steps fail to resolve the
problem.
Power light is ON, however there is no
display on LCD screen
Power failure on screen
a. Remove all transducers and reset power
by switching the power supply OFF then
ON.
b. Check the DC power voltage. If DC power
drops or changes, replace the power
supply (Appendix B).
c. Replace the LCD alarm.
No audible alarm
DC power cable is disconnected or loose
connection
a. Ensure that the DC power cable from the
system power supply is firmly connected
to the LCD alarm.
b. Check the volume control (see page 11,
step 9 - ii).
c. Replace LCD frame assembly.
Audible signal will not silence
Faulty display module
Disconnect the back of the faulty display
module and replace the LCD frame assembly.
Connection of the DC power cable from
system power supply to LCD alarm is
loose
Disconnect the DC power cable from the LCD
module and then reconnect. If audible alarm
still persists, replace the LCD frame assembly.
Faulty push button (broken)
Replace the LCD frame assembly.
