LG LZ-H0106BA0 Service Manual page 45

Breakdown mode 3: Remote controller does not work. It works abnormally.
Checklist table(table3) for using ZCON-BS2.
No. Details
No message displayed
1
on LC screen
2
Arbitrarily
operated/stop, or
converted displays
Checking number other
3
than the checking
number list is displayed
Impossible to stop
4
ventilation system with
remote controller
(interlocking operation)
5
Main power is displayed
on remote controller and
then ventilation system
operates
Impossible to operate
6
or stop ventilation
system with remote
controller(central
controlling sign is
displayed)
Impossible to operate
7
or stop ventilation
system with remote
controller (multi remote
controller displayed)
Possible Causes
• Different transmission line
connection terminal
• No power on ventilation system
• Incorrect power on ventilation
system
• Connecting failure of transmission
line
• Longer wiring length of
transmission line than
prescribed(more than 500m)
• Several transmission lines wired
with muticables.
• Transmission line wired in too
closely to power line
• Omission of liquid crystal letter on
remote controller
• Under interlocking operation in air
conditioner
• Disconnected main power during
ventilation system operation
• LOCK is set in the upper controller
• Interlocking ON/OFF preferable to
external is set
• Under operation in LCD remote
controller
Necessary actions
• Check the connection of transmission line
(CN-REMO on the ventilation system panel)
• Check the power in ventilation system.
• Check the power
• Check the wiring length of transmission line.
• With exclusive wires, wire each transmission
line at intervals.
• Wire transmission line and power line at more
than 5cm intervals.
• Replace remote controller
• No error
• Activate the ventilation stop in air conditioner
to stop ventilating.
• Stop the ventilation system with remote
controller, and temporarily disconnect the
main power
• Check the upper controller setting
• No error
• Activate the ventilation stop in LCD remote
controller to stop ventilating.
Troubleshooting
Service Manual 45