Testing And Troubleshooting; Troubleshooting; Common Problems - Honeywell 6820EVS Installation And Optimization Manual

Model 6820 / 6820-EVS Installation Manual
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.

13.2 Common Problems

Problem
Trouble message "DBL ADDR" (Double
Address) displays on LCD.
Auxiliary power or notification circuits have
incorrect polarity.
SLC devices are not being recognized
(trouble message "Missing" displays).
SLC devices are not being recognized
(trouble message "Missing" displays on the
annunciator).
Possible Cause / Suggested Actions
An address has been assigned to more than one detector. Correct the address
following the procedure described in Section
7.7
if using SK devices.
Correct polarity. For notification and auxiliary power circuits: When in alarm or
powered, terminals labeled "X" are positive, terminals labeled "O" are negative.
Check hardware connections.
If devices are physically connected, make sure wiring is correct (see Section
7.8
if using SD devices or Section
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
7.9
described in Section if using SD devices or Section
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
7.8
Section if using SD devices or
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.
13-1
LS10144-001SK-E
7.9
if using SD devices or Section
7.6
if using SK devices). For the main panel,
7.7
if using SK devices.
7.6
if using SK devices.