Hitachi PSC-A1T Technical Catalogue

4 Individual remote controls
Receiver kit for wireless remote control
TCGB0106 rev.0 - 12/2014
212
4.5.8.2 Indication of receiver kit

In normal condition
Defrost
• Defrost operation: DEF indicator (green) is turned ON during the defrosting. The indoor fan is stopped. The louver is
xed at the horizontal position. However, the louver indication of LCD continues to activate.
• Operation stoppage during defrosting operation: The RUN indicator (red) is turned OFF when the operation is stopped
during the defrosting. However, the operation continues with turning ON DEF indicator (green), and the unit is stopped
after the defrost operation is nished.
Filter sign
The cleaning period for air lter is notied by turning ON the FILTER indicator (yellow).
(The detail of cleaning method and lter cleaning time should be referred to the installation and operation manual of the
indoor unit.)
After cleaning, point the transmitter towards the receiver kit and press “RESET” switch to turn OFF the FILTER indicator.
Central Control
When “
“ lamp (yellow) remains turning ON, the indoor unit is under the centralized control. In this case, “RESET” and
“RUN/STOP” switches are only available to control from the wireless remote control switch.
Periodic check (only for gas heat pump air conditioner)
For the gas heat pump air conditioning, the periodic check is required because the engine is equipped.
If the indication lamp ashes in follows, the periodic check shall be performed.
Contact your distributor or contractor to request the maintenance.
• When the FILTER indicator (yellow) and the TIMER indicator (green) ash slowly (2 seconds ON/ 2 seconds OFF cy-
cle), it is notied that the periodic check for outdoor unit is nearby.
• When the FILTER indicator (yellow) and the TIMER indicator (green) ash quickly (0.5 seconds ON/ 0.5 seconds OFF
cycle), it is notied that the periodic check time for outdoor unit is passed. Contact beforehand your distributor or con-
tractor to request the maintenance.

In abnormal condition
Abnormality
• When some troubles occur such as safety device actuation, etc. during the test run or the normal operation, “RUN” (red
lamp) ashes (0.5 second ON / 0.5 second OFF).
• The alarm codes are indicated by the ashing times of “DEF” (green lamp) and “FILTER” (yellow lamp).
“DEF” (green): The number of ashing is shown at the tens digit of alarm code.
“FILTER” (yellow): The number of ashing is shown at the units digit of alarm code.
Example
3 5
“FILTER” (yellow lamp)
“DEF” (green lamp)
Alarm
“DEF” ashes 3 times
(0.5 second ON/0.5 second OFF)
“FILTER” ashes 5 times
(0.5 second ON/0.5 second OFF)
These indications are repeated until the alarm is reset.

Hitachi PSC-A1T Specifications

General

Brand	Hitachi
Model	PSC-A1T
Category	Controller
Language	English