Hitachi RAS-(2-6)HVNP1(E), Service Manual

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6 Optional functions
182
SMGB0087 rev.0 - 12/2013
6.3 Optional functions (By remote control switch)
A
dditionally to the possible optional functions by the 7-segment display of the outdoor unit’s PCB, there are available a
large quantity of optional functions for each remote control switch connected to the system.
An example of the available optional functions by the HITACHI remote control switches (PC-ART / PC-ARF) is shown
below:
Element Optional function
Individual
setting
Settings Setting conditions Description
b1
Removal of heating
temperature
compensation
O
00
Standard setting. It
increase the
tempe4ºC
This function is used when the
temperature setting displayed on the
remote control and the supply air
temperature of the indoor unit are must
be the same.
01 Removal
02
It increase the
tempe2ºC
(1)
.
b2
Circulator function at
heating Thermo-OFF
O
00
Not activated
function
This function means that the fan unit
remains running after the air conditioning
system has stopped to prevent the air in
the room from stratifying.
01 Activated function
b3
Forced compressor
operation for at least
three minutes
O
00
Not activated
function
This function is used to protect the
compressor, preventing it from being
started or stopped for periods of less
than three minutes.
01 Activated function
b4
Pre-determined
filter cleaning period
change
O
00
Standard (1200 h
factory setting)
This function is used to modify the period
during which the remote control indicates
the air filter replacement.
01 100 hours
02 1200 hours
03 2500 hours
04 No indication
b5
Fixing of operation
mode
X
00
Not activated
function
Once the unit operating mode has been
selected, this function prevents it from
being modified from the remote control.
01 Activated function
b6
Fixing of setting
temperature
X
00
Not activated
function
Once the unit temperature has been
selected, this function prevents it from
being modified from the remote control.
01 Activated function
b7
Fixing of cooling
operation
X
00
Not activated
function
This function is available to use cooling
mode only and to prevent heating mode
from being enabled.
01 Activated function
b8
Automatic COOL/
HEAT operation
X
00
Not activated
function
This function allows the automatic
change from the cooling to the heating
mode for the units with the same
refrigerant cycle.
01 Activated function
b9
Fixing of fan speed X
00
Not activated
function
Once the unit fan speed has been
selected, this function prevents it from
being modified from the remote control.
01 Activated function
bA
Not available X “- -” permanent Not available –
bb
Cooling temperature
compensation
X
00
Standard setting.
No compensation
This function is used to obtain longer
cooling periods.
01
It decrease the
temperature -1ºC
02
It decrease the
temperature -2ºC