Hitachi PC-ARFG-E Installation & Operation Manual page 69

SERVICE & INSTALLATION MENU
Element Optional function
Setting of temperature
r2 differential for switching
cooling and heating
r3 Not used
r4 Not used
r5 Not used
r6 FrostWash Manual Setting
r7 FrostWash Automatic Setting
Enable/Disable Auto-
r8
FrostWash
Remote control prohibition
r9
during setback operation
rA FrostWash Intervals Setting
Minimum operation time to
allow the change of operation
rb
mode in auto cooling/heating
mode with dual set point
55 PMML0565 rev.1 - 04/2022
Individual
Settings
setting
0.5 0.5°C
1.0 1.0°C
1.5 1.5°C
X
2.0 2.0°C
2.5 2.5°C
3.0 3.0°C
0.5
1.0
1.5
2.0
2.5
- 3.0 -
3.5
4.0
4.5
5.0
5.5
00
- -
01
00
- -
01
00 Allow
X
01 Prohibit
00 Allow
X
01 Prohibit
00 Disable
X
01 Enable
00 Start/Stop allowed (Factory setting)
Start/Stop not allowed
!
X 01
Blocking of Start/Stop shall never be set
due to safety concerns.
02 Only Stop allowed
00 100h
01 200h
X
02 400h
03 50h
00 Disabled
01 10 minutes
02 20 minutes
03 30 minutes
04 40 minutes
05 50 minutes
X 06 60 minutes
07 70 minutes
08 80 minutes
09 90 minutes
10 100 minutes
11 110 minutes
12 120 minutes
Setting conditions
D A N G E R
Description
This function can only be set
when function r1 is set to 01.
Not used
Use at 00 conditions
Use at 00 conditions
To enable / disable the manual
setting of the FrostWash
function.
To enable / disable the
automatic setting of the
FrostWash function.
To enable / disable FrostWash
function.
Manual run/stop from the
remote controller can be
disabled during setback
operation.
This function is fixed to 00
(Disabled) when function qE is
set to 00 (Always).
This function is used to
define the intervals between
FrostWash operation.
This function is used to define
a minimum time of operation
in a given mode, in order to
avoid too frequent changes of
operation mode.
Operation mode does not
change until the minimum
transition time passes, even if
the room temperature reaches
the setpoint to shift to the other
operation mode.