Model IFP-2000/ECS Installation Manual 151430-L8
13-1
Section 13
Testing and Troubleshooting
13.1 Troubleshooting
This section of the manual offers suggestions for troubleshooting hardware problems. Please read this section if
you encounter a problem when installing the control panel. If these suggestions do not solve your problem or if
you encounter a problem that is not listed here, contact Silent Knight Technical Support at 800-446-6444 for
assistance.
13.2 Common Problems
Problem Possible Cause / Suggested Actions
Trouble message "DBL ADDR" (Double
Address) displays on LCD.
An address has been assigned to more than one detector. Correct the address
following the procedure described in Section 7.8 if using SD devices or Section
7.6 if using IDP devices
Auxiliary power or notification circuits have
incorrect polarity.
Correct polarity. For notification and auxiliary power circuits: When in alarm or
powered, terminals labeled “X” are positive, terminals labeled “O” are negative.
SLC devices are not being recognized
(trouble message "Missing" displays).
Check hardware connections.
If devices are physically connected, make sure wiring is correct (see Section
7.7 if using SD devices or Section 7.5 if using IDP devices). For 5815XL
devices, make sure the device connects to the 5815XL via the SLC OUT
terminals.
There can be only one SLC loop on the main panel and on each 5815XL
module. Do not connect devices to terminals labeled SLC IN.
Make sure SLC devices have been addressed properly following the procedure
described in Section 7.8 if using SD devices or Section 7.6 if using IDP devices.
Make sure correct polarity has been observed for SLC device wiring. See
Section 7.7 if using SD devices or Section 7.5 for IDP devices.
SLC devices are not being recognized
(trouble message "Missing" displays on the
annunciator).
Check that SLC loop impedance is within the required range.
To measure impedance, use the following procedure:
1. Disconnect both wires from the terminal block at the panel (SLC devices can
remain connected).
2. Measure the impedance from positive to negative and from negative to pos-
itive. Both measurements should be greater than 500 K ohms. If the installa-
tion uses T-taps, test each T-tap individually.
3. Temporarily connect the positive wire to the negative wire of the SLC loop at
the point farthest from the panel (SLC devices can remain connected).
4. Measure the impedance from positive to negative and from negative to pos-
itive wires that were disconnected from the panel in step 1. Both measure-
ments must be less than 50 ohms.
The panel indicates a ground fault trouble
condition (trouble message "GROUND
FAULT" displays).
An earth ground fault occurs when the panel senses an unexpected flow of
current from one or more of its terminals to the earth connection (Terminal 2).
Isolate the wiring that is causing the fault by removing wiring connections one at
a time until the earth fault is no longer present. Pause at least five seconds after
removing a wire before removing the next one.
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