5.2.5 Troubleshooting
Check the following table before contacting a dealer for assistance.
Condition Cause
Indications on the touchscreen are not dis-
played.
• Check that the wiring for the power supply is connected to the wall plug.
• Check that the power supply is turned ON.
The touchscreen display is in sleep mode.
• The touchscreen enters in sleep mode automatically when the touchscreen is not
operated for a given length of time. Tap the screen to wake it up.
A part of the touchscreen does not turn ON or
is always turned ON.
• There may be dead pixels on the LCD. This is not faulty.
There is no response when tapping a button
on the touchscreen. However, the button next
to the tapped one is responding.
• When the central station is used for a long time, the touchscreen may not match
the position of display indication.
Refer to section “Calibration of the touchscreen”.
The air conditioner unit does not run.
• Check if the air conditioner unit is in heat storage mode. The air conditioner can-
not operate while the heat storage unit is operating (with the exception of heat
storage units which explicitly allow simultaneous operation).
The setting of louvre direction returns to
previous setting.
• When the operation mode is “AUTO”, the direction of the louvre is automatically
corrected depending on the indoor unit model.
Scheduled operation does not work.
• Check if the holiday setting is turned ON.
If so, cancel the holiday setting following the instructions of section “Holiday set-
ting for suspending operation”.
• Check if the setting of scheduled operation is turned OFF.
If so, the scheduled operation should be turned ON following the instructions of
section “Schedule timer ON/OFF setting”.
Date and time appear as “- -”.
• Date and time appear as “- -” when the electrical power is suspended for a pro-
longed period. Set date and time again following the instructions of section “Ad-
justing Date/Time”.
The selected settings are not applied.
• It may happen that the air conditioners do not respond to the orders of the central
station immediately after power ON, because the starting process of the air condi-
tioners has priority. Wait for a brief time before attempting operation again.
Simultaneous Run/Stop of all the units does
not work.
• Check if exception settings for Run/Stop operation are being selected. If so, can-
cel the settings.
The state of the remote control switch does
not match with the state of this controller
when the indoor unit is recovering from a
power failure.
• There is the possibility that the power supply was not stable when recovering from
a power failure. Perform control operation from this controller to make the state of
the remote control switch to match.
5.2.6 Maintenance
•
Clean and wipe the LCD screen with a dry soft cloth.
•
Use diluted neutral detergent to remove oil and fat such as ngerprint marks from the touchscreen. Wring water out to
dry the cloth before cleaning. After that, wipe the LCD screen again with a dry soft cloth.
•
Do not use benzine, thinner or surface active agents in order to protect the touchscreen and its case from deforma-
tion or deterioration or tarnishing.
5 Centralised remote controls
PSC-A32MN
TCGB0106 rev.0 - 12/2014
368
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