174 6820 / 6820EVS Manual P/N LS10144-001SK-E:C 09/28/2017
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 Honeywell Silent Knight Technical Support at 800-446-6444 for assistance.
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 7.9 if using SD devices or Section
7.7 if using SK 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
7.8 if using SD devices or Section 7.6 if using SK devices). For the main panel,
the positive side of device must be connected to terminal 34; the negative side
must be connected to Terminal 33. 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 7.9 if using SD devices or Section 7.7 if using SK devices.
For contact monitor modules, which are addressed using DIP switches, the DIP
switch must be set to the correct address before power is applied to the SLC
loop. If this procedure is not followed, the device will have an incorrect address.
Make sure correct polarity has been observed for SLC device wiring. See
Section 7.8 if using SD devices or 7.6 if using SK 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
positive. Both measurements should be greater than 500 K ohms. If the
installation 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
positive wires that were disconnected from the panel in step 1. Both
measurements 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.
The panel will also go into ground fault if a computer is connected to the panel
via a serial cable attached to the panel’s 9-pin connector. This is a correct
method for on-site communication between a panel and a computer. Ignore the
ground fault message in this case. The trouble will clear automatically when you
disconnect the computer from the cable
5815XL module that has been physically
connected to the panel but is not being
recognized.
Check the status of the 5815XL green LED. If it flashes in the pattern .5 sec. on
/ .5 sec. off, it is likely that the 5815XL has not been added to the system
through programming. JumpStart will add any 5815XLs connected to the panel.
If you have already run JumpStart, 5815XLs can be added manually (see
Section 9.2.2).
Check that the correct ID for the 5815XL module has been set through the DIP
switches. Assign ID#1 to the first 5815XL and ID#2 to the second 5815XL. See
Section 4.13.1 for complete details.
If the wiring between the 5815XL and the panel is correct, measure the voltage
from 5815XL Terminal (+) to Terminal (-). Voltage should be in the range 27.2-
27.4V when AC power is present.
If the green LED is not flashing, the likely cause is incorrect wiring from
between the 5815XL and the panel. See Section 4.8.1 for wiring details.
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