2WAY SYSTEM
Control Functions
-
Outdoor Unit
1 - 30
9. Defrost Control
2WAY SYSTEM
Control Functions-Outdoor Unit
E
C→E
E→C
S
C
: Evaporator operation
*3 Only for High Static Pressure Ducted Type Indoor Unit (Type E1)
: Switching from condenser operation to evaporator operation
: Switching from evaporator operation to condenser operation
: Stop or shut off the refrigerant
: Condenser operation
Normal
operation
Normal
operation
Outdoor unit cycle defrost processing
E E→C C C→E EEE
1st
Defrost
group
2nd
Defrost
group
Indoor unit
delay-start
control
1st
Defrost
group
2nd
Defrost
group
Switch Switch
Control time - 1 min Max 7.5 min 1 min Max 7.5 min 1 min -
Defrost
occurs
Outdoor
unit(s)
Indoor
units
Defrost
occurs
first
second
Mode
Stop
Heat
exchanger
Compressor
Fan
Heat
exchanger
Compressor
Fan
Heating
E or S EEE→C CC→E E or S
ON ON ON OFF OFF OFFON
ON OFF OFF OFF ON OFF ON
ON or S OFF OFF OFFONOFF ON or S
ON or S ON ON OFF OFF OFFON or S
Fan
S
S
C
C
S
S
S
C
C
S
S
S
C
C
S
S
S
C
C
S
S
S
C
C
S
S
S
C
C
S
S
S
C
C
S
Thermostat
ON
OFF
*3 OFF
Indoor unit (expansion valve, fan)
*3 Only for High Static Pressure Ducted Type Indoor Unit (Type E1)
*4 Fan operates at the set fan speed depending on the indoor unit operation mode.
Normal
operation
Normal
operation
Outdoor unit cycle defrost processing
Indoor unit
delay-start
control
Switch
Switch
Expansion
valve
Unit :
pulse
Stop
Mode
Heating
Fan
Heating
Fan
Stop
65
65
SC control
65
20
*4
*4
*4
*4
*4
60
60
SC control
60
20
*4
*4
*4
*4
*4
20
20
60
60
20
LL
*4
*4
Stop
*4
20
20
60
60
20
LL
*4
*4
Stop
*4
20
20
60
60
20
LL
*4
*4
Stop
*4
20
20
60
60
20
LL
*4
*4
Stop
*4
20
20
SC control
65
20
*4
*4
*4
*4
*4
Thermostat
ON
OFF
*3 OFF
*3 OFF
ON
OFF
Fan
2WAY SYSTEM
Control Functions-Outdoor Unit
10. Upper Current Limitation Mode
EEPROM setting in main outdoor unit
EEPROM setting in main outdoor unit
CODE: 1A
CODE: 1E
Setting No.
0 No display
1
2
Information is displayed when input of demand control is set (factory preset mode).
Information is displayed only when the capacity is restricted by demand control.
Control
Contact 1
Upper current limitation setting
Contact 2
No control (Operates to maximum capacity)
Operates to XX% of the upper limit for the rated current.
Operates to YY% of the upper limit for the rated current.
Forced thermostat OFF setting
There are 2 types of control; demand control and infinity limit in the upper current limitation mode.
Serial-parallel I/O must be connected in order to perform demand control.
The below input is received by serial-parallel I/O, and demand control is performed.
The demand values can be set as needed with serial-parallel I/O.
It is able to display the present condition on the remote controller.
* The rated current indicates the current value that is listed in the catalog or similar material.
* XX and YY are able to set in EEPROM of main outdoor unit.
: Input present : Input not present
10-1. Demand Control
CODE: 1B
Setting No.
0
40
45
-1
130
YY
0
40
45
No control
130
Setting No.
0
40
45
-1
130
100
XX
0
No control
130
Interval of “5”
40
45
100 (factory preset mode)
70
Interval of “5”
70 (factory preset mode)
8 hp 10 hp 12 hp 14 hp 16 hp 18 hp 20 hp
8.9 12.9 15.4 18.0 21.8 24.0 28.2
8.8 12.9 15.1 17.4 21.1 24.3 27.7
Cooling mode
Heating mode
The standard value of the limit current is listed in the table below. unit: Amp.
hp = horsepower
SM830204-05_2WAY SYS.indb 30 2015/01/21 17:00:04
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