Panasonic U-4LE1E5 Service Manual page 12

2. Compressor Control
(2) Primary Current Protection
The primary current protection value is divided into the cooling and heating mode.
Also, the cooling of single-phase outdoor unit can be divided into two tables according to the outdoor air
temperature. 3-phase outdoor unit has no distinction for outdoor air temperature.
Concept view of outdoor air temperature
1
<Cooling>
Single-phase Model
When outdoor air temperature increases :
Outdoor air
temperature:
43.0°C
Table 1
Stop*1
Down*2
Not up*3
Followed by normal control
3-phase Model
Stop*1
Down*2
Not up*3
Followed by normal control
<Heating>
Regardless of the outdoor air temperature, the value of the primary current protection is controlled by the
contents of the table listed below.
Single-phase Model
Stop*1
Down*2
Not up*3
Followed by normal control
3-phase Model
Stop*1
Down*2
Not up*3
Followed by normal control
(3) Secondary Current Protection (Common to cooling & heating mode)
Single-phase Model
Stop*1
Down*2
Not up*3
Followed by normal control
3-phase Model
Stop*1
Down*2
Not up*3
Followed by normal control
Section of outdoor air temp.
Cooling at Table 2
Cooling at Table 1
unit : Amp. hp : horse power
4 hp 5 hp
22.0~ 25.0~
20.0~22.0 23.0~25.0 26.0~28.0
19.0~20.0 22.0~23.0 25.0~26.0
~19.0 ~22.0
unit : Amp. hp : horse power
4 hp 5 hp
10.5~ 12.0~
8.5~10.5 10.0~12.0 12.0~14.0
7.5~8.5 9.0~10.0 11.0~12.0
~7.5 ~9.0
unit : Amp. hp : horse power
4 hp 5 hp
23.0~ 26.5~
21.0~23.0 24.5~26.5 28.0~30.0
20.0~21.0 23.5~24.5 27.0~28.0
~20.0 ~23.5
unit : Amp. hp : horse power
4 hp 5 hp
10.5~ 12.0~
8.5~10.5 10.0~12.0 12.0~14.0
7.5~8.5 9.0~10.0 11.0~12.0
~7.5 ~9.0
unit : Amp. hp : horse power
Common to 4/5/6 hp
24.0~
21.0~24.0
20.0~21.0
~20.0
unit : Amp. hp : horse power
Common to 4/5/6 hp
18.0~
15.0~18.0
14.0~15.0
~14.0
When outdoor air temperature decreases :
Outdoor air
temperature:
42.0°C
Table 2
6 hp
28.0~ Stop*1
Down*2
Not up*3
~25.0 Followed by normal control
6 hp
14.0~
~11.0
6 hp
30.0~
~27.0
NOTE
Each value shown in the table indicates the detected value.
6 hp
When the detected value is detected as shown in the table :
14.0~
*1 Stop the compressor.
*2 Decrease the frequency that the compressor is controlled.
*3 Do not increase the frequency that the compressor is
~11.0
controlled.
NOTE
Each value shown in the table indicates the detected value.
When the detected value is detected as shown in the table :
*1 Stop the compressor.
*2 Decrease the frequency that the compressor is controlled.
*3 Do not increase the frequency that the compressor is
controlled.
1 - 6
Mini VRF SYSTEM
Control Functions
Section of outdoor air temp.
Cooling at Table 2
Cooling at Table 1
unit : Amp. hp : horse power
4 hp 5 hp 6 hp
22.0~ 25.0~ 28.0~
20.0~22.0 23.0~25.0 24.0~28.0
19.0~20.0 22.0~23.0 23.0~24.0
~19.0 ~22.0 ~23.0