Panasonic U-8ME1E8E Service Manual page 16

3. Compressor Control
Area shift function
B area is able to shift by EEPROM setting of outdoor unit.
EEPROM setting in main outdoor unit
Lower temperature of B area
= Tc_tgt_min + Te_L
CODE: 35
Setting No
-7
-6
-1
0 (factory preset mode)
1
7
A area shifts according to changed Tc_L
Limit pressure adjustment function
Operation pressure is able to be adjusted for existing old piping.
If area shift function is set, values below shift.
EEPROM setting in main outdoor unit
CODE: 4B
Setting No
0
1
2 (factory preset mode)
3
3-7. Protection control
3-7-1. Compressor discharge temperature protection
The compressor capacity is controlled according to the table below.
*Discharge temperature that is used for this control is the highest temperature among all compressors.
106 deg
105 deg
104 deg
103 deg
101 deg
Tc_L (deg)
-7
-6
Interval of "1"
-1
0
1
7
Limited pressure PX(℃ )
(Reference)
3.3 MPa 52.5
3.6 MPa 56.0
3.8 MPa 58.0
No use
Stop If this temperature is detected at regular intervals, alarm appears.
Compressor
Capacity goes down 2.0 HP
capacity
Capacity goes down 1.0 HP
decreases
Capacity goes down 0.5 HP
Compressor capacity cannot increase
Compressor capacity can increase
Lower temperature of B area
= Tc_tgt_max + Te_U
CODE: 36
Setting No
-7
-6
Interval of "1"
-1
0 (factory preset mode)
1
7
C area shifts according to changed Tc_U
Cooling mode
Tc_tgt_min Tc_tgt_max Tc_tgt_min Tc_tgt_max
47.0 49.0
51.0 53.0
53.0 55.0
1 - 9
2WAY SYSTEM
Control Functions-Outdoor Unit
Tc_U (deg)
-7
-6
-1
0
1
7
Heating mode
47.0 48.0
48.0 51.0
48.0 51.0
1