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13 Troubleshooting
Before requesting service, check the following items.
Do not attempt to service the Intelligent Controller yourself. Doing so can be dangerous.
Symptom
Nothing appears on the screen when the
computer is turned on.
Timer operation does not work.
The distribution ratio is always 100%.
The power goes off at odd times.
There is an alarm message in the
notifi cation bar at the bottom of the screen
that will not go away.
Backing up to a PC Card does not work.
It takes a long time after an operation for
the screen to be updated.
LCD display
Nothing happens when an operation button
is pressed.
When local remote control operation is
prohibited on the Intelligent Controller,
the Intelligent Controller is not able to
start/stop operation of a malfunctioning air
conditioner.
A power outage occurred. When it
ended, the equipment did not come on
automatically according to program timer
settings.
The Intelligent Controller cannot detect a
single indoor unit. Or it cannot fi nd all of
them.
• Is the power cord connected?
• Is the power switch set to on?
• Is timer operation set to the target unit? Operation of a selected
timer does not start if the setting is not set the target unit.
• Does the setting match the current date and time?If the
date and time do not match, operation can start at an
unexpected time. (See "6.3.2 Setting the date, cut-off date,
and distribution ratio calculation method")
• Check the group settings and tenant settings.
• Distribution rate calculations always result in 100% if there
is only one tenant registered in a distribution group, or if
there is only one indoor unit in a tenant.
• The screen may be blank because of the power-saving auto
off function. The Intelligent Controller is still powered on.
Touch the screen to restore the display.
• Regardless of the selected auto off time, the screen may be
turned off when the Intelligent Controller boots.
• The message displays the unit where the alarm occurred,
and the alarm number. Inform your dealer or service
provider about the content of the message.
• Data can be backed up only to the special PC Cards (option)
for the Intelligent Controller. Backup to other PC Card types
is not possible.
• A certain amount of time may be required depending on the
state of communications with the connected air conditioners.
Please wait until all of the information is received.
• In rare cases there may be a dot on the screen which
is always on or always off. This is not a malfunction.
Due to the nature of LCD displays, there may be some
color bleeding in certain areas because of variations in
temperature and so on.
This is normal and not a malfunction.
• Over extended use, the touch positions and display
positions on the touch panel may get out of alignment.
( "6.8.9.7. Calibrating touch panels")
• Emergency operations until our service person arrives:
Power off the Intelligent Controller and externally installed
communication adaptor; re-power on the indoor unit. Operation
with the local remote control will be possible. However, this
cannot be done in a remote control free system.
• The Intelligent Controller does not power on equipment
automatically by program timer after a power outage. The
setting for the next programmed time will be executed when
the time arrives.
• Try using the "Check confi guration" button in the "Other
settings" screen (
Main
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Cause
6
9
6
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