EST3 Installation and Service Manual

Service and troubleshooting

3-OPS Off-Premises Signal module

Table 8-9: 3-OPS Off-Premises Signal module troubleshooting

Module in trouble

Remote receiver indicates circuit trouble and does not receive alarm

Remote receiver does NOT indicate circuit trouble and does not receive alarm

1. Master box circuit open or not reset

2. Reverse polarity circuit open

3. 3.6 k

Ω EOL resistor not installed on unused circuits

1. Circuit polarity reversed

2. Circuit open

3. Excessive circuit resistance

4. Incompatible receiver

5. Defective module

1. 3-OPS Not activated by panel (SDU database)

2. Incompatible receiver

3. Defective module

3-IDC8/4 Initiating Device Circuit module

Table 8-10: 3-IDC8/4 Initiating Device Circuit module troubleshooting

Module in trouble

NAC output not working

IDC circuit not working

1. 4.7 k

Ω EOL resistor not installed on unused IDC circuits

2. 15 k

Ω EOL resistor not installed on unused NAC circuits

3. No communication with CPU module

4. Module not defined in SDU database.

5. Field wiring connector not plugged into module

1. Jumpers installed incorrectly

2. External source configured but not connected

3. Circuit folding back due to overload.

4. Circuit “Silenced”

5. Circuit shorted

6. Polarized device defective or reversed on circuit

1. Incompatible 2-wire smoke detectors

2. Excessive wiring resistance or capacitance

8.16 EST3 Installation and Service Manual