Troubleshooting; Maintenance - Hitachi PC-ARF Technical Catalogue

5 Centralised remote controls
PSC-A64GT

5.1.5 Troubleshooting

Check the following table before contacting a dealer for maintenance.
Condition
Indications on the touchscreen are not displayed.
The touchscreen display is slept.
A part of the touchscreen is not turned on or is constantly
turned on.
The operation is not carried out smoothly when the
switch is tapped.
"- -" is indicated for the setting temperature.
The temperature cannot be set.
The setting of louver direction returns to previous setting.
The timer operation by the schedule setting does not run.
"- -" is indicated for the date and time.
The setting is not changed.

5.1.6 Maintenance

• Clean and wipe the display with dry and soft cloth.
• For oil and fat on the touchscreen such as finger 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.
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TCGB0106 rev.0 - 12/2014
Check that the wiring for the power supply is connected to the plug.
Check that the power supply is turned ON.
The touchscreen will automatically sleep when the touchscreen is not
operated for the given length of time. Tap the screen to wake up.
There may be dead pixel on the LCD. This is not faulty.
When the central station is used for a long time, the touchscreen may not
match the position of display indication. Refer to Touchscreen Calibration
section for the Touchscreen Calibration.
No setting temperature is set.
Press and hold " " or " " for 3 seconds on the setting touchscreen.
Refer to Setting Temperature section.
When the operation mode is "AUTO", the direction of louver is automati-
cally corrected depending on the indoor unit model.
Check if the holiday setting is turned ON. If so, cancel the holiday setting
according to Holiday Setting for Operation Suspended section.
Check if the setting of schedule operation is turned OFF. If so, the sched-
ule operation should be turned ON according to Schedule Timer ON/OFF
Setting section.
"- -" is indicated when electrical power is shut down for a long time. Set
the date and time again according to Adjusting Date /Time section.
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.
Cause
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