FireSwitch108 - 11 -
Step 3. EOL Resistor Value Programming
a. Depress the joystick three (3) times from Stand-by screen, or two (2) times from Function Screen,
or one (1) time from Protocol screen.
b. Use [Up/Down] to select the appropriate value (see chart below).
c. Use [Left/Right] to select the output.
Programmed Digit 0 1 2 3 4 5 6 7
Resistor Value 2.2K 2.8K 3.9K 4.7K 5.1K 10K 22K 43K
Step 4. Read/Clear Trouble Memory
a. Depress the joystick three (3) times from Stand-by screen, or two (2) times from Function Screen,
or one (1) time from Protocol screen.
Trouble Memory LCD Indication:
LCD Legend Trouble Condition
A AC trouble.
B Battery trouble.
C Common trouble.
N Normal operating condition.
O Loop open or open circuit.
S Loop Shorted.
G Loop Ground fault.
? Loop wiring is incorrect.
b. Use [Down] to reset all stored troubles.
Step 5. AC and Battery Trouble Reporting and Sounder Alert Options
a. Depress the joystick four (4) times from Stand-by screen, or three (3) times from Function Screen,
or two (2) times from Protocol screen, or one (1) time from Trouble Memory screen.
b. Use [Up/Down] to select/de-select reporting option.
c. Use [Left/Right] to select AC/BAT/ALERT or to enable/disable AC and BAT trouble and ALERT sounder.
d. Use [Up/Down] to select the appropriate End of Line Resistor value
(2.2K, 2.8K, 3.9K, 4.7K, 5.1K, 10K, 22K, 43K).
e. Depress the joystick to exit. Note: AC and BAT trouble and ALERT sounder are factory enabled.
Testing and Maintenance:
Unit should be tested at least once a year for the proper operation as follows:
Output Voltage Test: Under normal load conditions, the DC output voltage should be checked for proper
voltage level.
Battery Test: Under normal load conditions check that the battery is fully charged, check specified
voltage both at battery terminal and at the board terminals marked [– BAT +] to
ensure that there is no break in the battery connection wires.
Note: Expected battery life is 5 years; however it is recommended changing batteries in
4 years or less if needed.
Test operation of unit as follows:
Ground fault test: Directly short one leg of the circuit to chassis ground.
The ground fault and trouble fault should be indicated.
NAC open circuit test: Remove the EOL resistor from the last device on the circuit.
Open trouble should be indicated.
NAC short circuit test: Place a short across each NAC output individually. NAC short should be indicated.
Disconnect Battery: BAT trouble should be indicated.
Reset Trouble Memory.
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