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Causes of failures and trouble shooting
S/N Error Code Symptom Possible Cause Solution
1
Wired controller
F6 alarm
Communication failure between
wired controller and master unit
1. A/B communication lines of the
wired controller and master unit
are incorrectly connected.
Check and troubleshoot the
communication lines.
2. The communication line has
broken off.
3. Communication wires between
the wired controller and the
master unit cross over strong-
current cables.
Rewire the unit, use shielded
communication lines or keep the
communication lines away from
strong current cables.
4. Control panel of the master unit is
not powered on.
Check and troubleshoot the
control panel
5. The communication line between
the master unit and the wired
controller is too long.
1. Use shield lines
2. Short the JP7 jumper on the
control panel
6. Can communicate with the
monitoring software while the
wired controller sends out the
alarm F6.
Remove resistance R44 on the
wire controller or replace the wire
controller.
7. Failure of communication ports
on the control panel of the master
unit.
Replace
8. Failure of communication ports on
the wired controller.
Replace
9. Incorrect address setting for the
master unit.
Check and troubleshoot the
communication lines.
2
The LED indicator
of the unit displays
ERXX and the wired
controller displays
XX (XX represents
00 ~ 14)
Communication failure of Slave
unit No. XX
1. Communication line of Slave Unit
No. XX has broken off
Check communication cables and
solve the problem.
2. The control panel of Slave Unit
No. XX is not powered on.
Check and troubleshoot the
control panel
3. Incorrect DIP address setting for
the slave unit
Reset the addresses of all slave
units and check that there is no
duplicate address
4. The number of slave unit is set
incorrectly for the master unit.
Reset the number of slave units
and check that the number match
with all the addresses
5. The PC communication port of the
slave unit has broken down
1. Exchange positions of the two
485 on Slave Unit No. XX
2. Replace the control panel
6. The communication line of
Slave Unit No. XX is incorrectly
connected.
Connect the communication line
of Slave Unit No. XX to Apc/Bpc
port
3
The LED indicator
of the unit displays
ER78
Communication failure for all
slave units
1. The Bin/Ain communication line of
the master unit has broken off
Reconnect the communication
line to the Bin/Ain port and screw
down the wire terminal
2. One of the A/B communication
lines is connected incorrectly
Check the communication line
3. The Bin/Ain port of the master unit
has broken down
Replace the control panel of the
master unit
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