Defrost For Cold Area (Jo); Slo Defrost Setting (Bj); Priority Capacity Mode Setting (Nu); Defrost For Cold Area - Hitachi UTOPIA RAS-4HVRP2E Service Manual

6 Optional functions
RAS-(4-6)H(V)(R/N)(C/P)2E
6.2.3.6 Defrost for cold area (J)
Press PSW1 and select the setting condition "0" to "2" at the defrost for the cold area "J" to change the temperature
condition for starting defrost operation
Standard specifications
Setting
When change of defrost condition
condition
is not set "J=0"
Temperature
conditions
under
defrosting
operation
A: Outdoor evaporation temperature (pipe) (ºC)
B: Defrost operation in the stop area.
C: Outdoor temperature (ºC)
D: Defrost operation in the start area.

6.2.3.7 SLo defrost setting (bJ)

Press PSW1 and select the settings condition "0" to "1" at the SLo defrost setting "bJ".
The indoor fan stops during the defrost operation and starting of heating operation. However, the indoor fan can operate
at low speed during the defrosting operation and starting of heating operation.
Setting
condition
At Start of Compressor Operation in Heating Operation
0
1
?
N O T E
The indoor fan may operate at other speed depending on outlet air temperature of the indoor unit.

6.2.3.8 Priority capacity mode setting (nU)

Press PSW1 and select the setting condition "0" to "3" at the priority capacity mode setting "nU". By setting this function,
the target frequency, current limit of the compressor and the maximum indoor fan motor step are set higher.
?
N O T E
• Do not use the setting condition "2" and "3" unless the power supply wiring is of sufficient ampacity, because the target frequency and
current limit of the compressor during the operation are set higher.
• Level 1 < level 2 < level 3.
Setting condition
0
1
2
3
137 SMGB0136 rev.0 - 07/2021
Cold area specifications
When change of defrost condition
Indoor fan operation
STOP
STOP
Compressor frequency and current limit
Default setting
Compressor frequency limit is set higher to level 1
Compressor frequency limit is set higher to level 2
Compressor frequency limit is set higher to level 3
Warm area specifications
When change of defrost condition
is set
"J=1"
During Defrost Operation
STOP
SLo Speed
is set
"J=2"
4 9
6
-10
-19
After Defrost Operation
STOP
SLo Speed
6