Specifications

143
3) Operation of function component in defrosting
4) Conditions for finishing defrosting
When any of the following conditions is met, the defrosting finishing operation will start.
1 When the temperature of the heat exchanger thermistor is 9 °C or more.
2 When 10 minutes has passed after the start of defrosting.
Outdoor unit frequency
Outdoor unit fan
4-Way valve
Electronic Expansion valve
(EEVA, B, C)
[Operating units]
Electronic Expansion valve
(EEVA, B, C)
[Stopped units]
Decision frequency
According to outdoor unit frequency
OFF
ON
OFF
0 Pulses
100
Pulses
According to outdoor unit frequency
Starting defrosting operation
Defrosting operation
Finishing defrosting
operation 2.
Finishing defrosting
operation 1.
100
seconds
0Hz
200 Pulses
A Pulses
At 1 or 2 units in operation : 200 pules
At 3 units in o
p
eration : 150
p
ules
B Hz
At 1 or 2 units in operation : 58 Hz
At 3 units in o
p
eration : 80 Hz
A Pulses
B Hz
80
sec.
Max. 60Hz
80
sec.
3 minutes
0Hz
(8) Determining the operating mode
The cooling and heating operating modes are the remote control switch mode that have been previously determined.
If a mode differing from these is selected after this, the selected mode will appear in the display of the remote control, but only the
fan will operate.
A unit
B unit
Cooling
Cooling
Fan Heating
HeatingFan
Cooling
switch
ON
Heating
switch
ON
Heating
switch
ON
Cooling
switch
ON
Heating
switch
ON
O
p
eration O
p
eration O
p
eration O
p
eration O
p
eration
Example of operating pattern
Note (1) [ ] indicates correct operation.
1
2
3
4
Example
First operation Second operation
Notes
Different mode
is only fan
operation.
•
Selected Mode
Cooling
Cooling
Heating
Heating
Remote Control Display
Cooling
Cooling
Heating
Heating
Operation
Cooling
Cooling
Heating
Heating
Selected Mode
Heating
Fan
Cooling
Fan
Remote Control Display
Heating
Fan
Cooling
Fan
Operation
Fan
(1)
Fan
Fan
Fan
Note (1) If the display shows heat-
ing and the operation is
fan, Hot Keep will op-
erate.
(9) Control and protection functions
(a) Control during start of compressor operation
1) Soft start
The inverter starts from 4 Hz when starting from the stop mode to control the starting current.