Remote Control Optional Functions - Hitachi PC-ARF Technical Catalogue

4 Individual remote controls
PC-ART

4.2.6.3 Remote control optional functions

b1 Removal of Heating Temperature Compensation (due to Uneven Heat Load).
This function is used when the temperature settings of the remote control switch and the suction air temperature of the
indoor unit are required to be equal.
This is useful when the thermistor at the suction side of an indoor unit is removed and installed in another place.
Setting Temperature for Room Temperature Control at Heating
Setting Condition
00 (Standard)
01
02
N O T E
The setting temperature upper limit after compensation is as follows: Inverter Multi Unit: 34 ºC
b2 Circulator Function at Heating Thermo-OFF
In case that the fan speed is changed to "LOW" tap at heating Thermo-OFF, the room air may stratify because warm
air stagnates near the ceiling. In this case, it is recommended that the circulator function explained below is utilized.
The function keeps the fan speed at thermo-OFF at the same level as thermo-ON. In this case, air movement in the room
will be kept on the same level as thermo-ON, ensuring a homogenous air distribution. In case that an Auto Louver is
equipped, this operation will be also activated when the heating is turned thermo-OFF.
N O T E
Perceptions of coolness, heat and air flow are subject to personal tastes and behaviours. It is therefore recommended to discuss this with
customers thoroughly and then to set the unit accordingly.
b3 Enforced 3 Minutes Minimum Operation Time of Compressor
This function is used to guard the compressor. When this function is valid, the operation is prevented the compressor
frequency starts and stops in short intervals. By setting this function, the mode of a minimum 3 minutes operation will be
added.
Refer to Item (C7) to cancel this function. Even if this function is set as invalid, "3 Minutes Guard for Compressor Protec-
tion" function is still available.
The functions of enforced 3 minutes minimum operation and minimum 3 minutes stoppage are valid when factory shipping.
N O T E
When the safety device is activated or the "RUN/STOP" switch is pressed, the compressor is stopped immediately.
b4 Change of Filter Cleaning Time
The period for filter sign indication is set for each indoor unit model when shipping. The filter sing is indicated according to
the filter cleaning time (Factory-Setting). However, this filter cleaning time can be changed depending on the condition of
the filter as shown in the table below:
In Case of
4-Way Cassette Type
Liquid Crystal Display on Re-
mote Control Switch

: Factory-Setting
: Change Setting Period

*
: In case of RPK model, the factory setting is 200 hrs.
135
TCGB0106 rev.0 - 12/2014
Actual Control Temperature
Remote Control Switch Setting Temperature (Indicated Value) +4
Remote Control Switch Setting Temperature (Indicated Value)
Remote Control Switch Setting Temperature (Indicated Value) +2
Period for Filter Sign Indication
Approx. 100 hrs. Approx. 1,200 hrs.

02 b4
01 b4
00 b4 *
Approx. 2,500 hrs.
 
or 03 b4
C
o
C
o
4
No Indication

04 b4