Hitachi PSC-A32MN - 10 Troubleshooting; 11 Maintenance

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P5415644
10. Troubleshooting
Check the following table before contacting a dealer for maintenance.
11. Maintenance
Condition Cause
Indications on the touchscreen are not displayed.
• Check that the wiring for the power supply is connected to
the plug.
• Check that the power supply is turned ON.
The touchscreen display is slept.
• The touchscreen will automatically sleep when the
touchscreen is not operated for the given length of time.
Tap the screen to wake up.
A part of the touchscreen is not turned ON or
is constantly turned ON.
• There may be dead pixel on the LCD. This is not faulty.
The button on the touchscreen cannot operate
even if tapped.
The button next to the tapped button will react.
• When the central station is used for a long time, the
touchscreen may not match the position of display
indication.
Refer to the item 8.8 for the Touchscreen Calibration.
The air conditioner unit does not run.
• Check if the air conditioner unit is in the heat storage mode.
(Simultaneous heat storage units are exception.) The air
conditioner cannot operate while the heat storage unit is
operating.
The setting of louvre direction returns to previous
setting.
• When the operation mode is “AUTO”, the direction of louvre
is automatically corrected depending on the indoor unit
model.
Schedule operation does not run.
• Check if the holiday setting is turned ON.
If so, cancel the holiday setting according to the item 8.4.2.
• Check if the setting of schedule operation is turned OFF.
If so, the schedule operation should be turned ON according
to the item 8.4.3.
“- -” is indicated for the date and time.
• “- -” is indicated when electrical power is shut down for a
long time.
Set the date and time again according to the item 8.6.
The setting is not changed.
• When the central station is operated immediately after
turning ON the air conditioners, the central station may
not be possible to control because the starting up of the
air conditioners are prior. Wait for a certain time before
operation.
The air conditioner unit does not RUN/STOP
simultaneously.
• Check if Exception Set. Run/Stop Operation is selected.
If so, cancel the setting.
The remote control switch does not match with
the main controller, when the indoor unit is
recovering from a power failure.
• The power supply was not stable temporally when
recovering from a power failure.
Use the main controller to match with the remote control
switch.
• Clean and wipe the display with dry and soft cloth.
• Foroilandfatonthetouchscreensuchasngerprintmarks,usedilutedneutraldetergentmixedwith
water to clean. Before cleaning, wring water out to dry. After that, again wipe the display with dry and soft
cloth.
• Do not use benzine, thinner or surface active agent in order to protect the display from deformation or
tarnish.