210
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 outdoor heat exchanger thermistor (Tho-R) is 9
°
C or more.
2
When 10 minutes has passed after the start of defrosting.
(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
Heating
Fan
Cooling
switch
ON
Heating
switch
ON
Heating
switch
ON
Cooling
switch
ON
Heating
switch
ON
Operation Operation
Operation Operation
Operation
Example of operating pattern
Note (1) [ ] indicates currect operation.
1
2
Example
First operation
Second operation
Notes
Different mode is
only fan operation.
•
Selected Mode
Cooling
Heating
Remote Control Display
Cooling
Heating
Operation
Cooling
Heating
Selected Mode
Heating
Cooling
Remote Control Display
Heating
Cooling
Operation
Fan
(1)
Fan
Note (1) If the display shows
heating and the opera-
tion is fan, Hot Keep
will operate.
Notes (1) Indoor unit fan is
in response to Hot
Keep.
(2) Outdoor unit fan
starts 6 seconds af-
ter the start of the
compressor.
80 sec.
80 sec.
ON
OFF
OFF
0 rps
According to rps
EEV control
Calculated start
Opening in relation
to conditions
Opening in
relation to
conditions
Defrost end conditions
Start of defrost operation
Defrost operation
Fully closed
Defrost end operation
80 rps
Decision speed
Decision speed
Outdoor unit speed
Outdoor unit fan
Electronic expansion valve
EEVA,B
(Operating unit)
Electronic expansion valve
EEVA,B
(Stopped unit)
4-way valve
200 pulse
When 2 units are operating:
150 pulse
When 1 unit is operating:
200 pulse
