Specifications
154
2.4.3 Outdoor unit
(1) Operations of major functional items under each operation mode
Notes(1) : ON,: OFF, /: ON or OFF
(2) Cooling and heating also include auto mode.
(3) Off if jumper wire (J3) is short circulated (factory setting) and open.
(2) Decision of frequency
(a) The decision frequency of indoor unit is equal to the required frequency shown in the table below when the total value of
required frequencies is less than the maximum frequency.
When the total value of required frequencies is more than the maximum frequency, the decision frequency is equal to the
frequency where required frequencies are proportionally distributed.
(b) The compressor operation frequency at simultaneous operation of cooling and heating is decided to the one where the total
value of required frequencies is larger, and the frequencies are proportionally distributed to each of [indoor unit in cooling/
dehumidification mode] and [indoor unit in heating mode].
1) The cumulative operating time of the compressor
comes up to 45 minutes after completion of a
defrosting operation, or it comes up to 30
minutes after a heating operation starts (the remote
controller is turned on).
2) Five minutes has passed after the compressor
was turned off and on.
3) Five minutes has passed after end of outdoor unit
fan motor control.
4) After all the above conditions have been met, the
temperature of the heat exchanger thermistor
(Th
O-
R) has been below the defrosting start
temperature for three minutes in succession.
(4) Defrosting
Initiation temp. of defrosting (Case of ON SW3-2)
Initiation temp. of defrosting (Standard)
Zone for initiate temp. of defrost
-20°C -15°C -10°C -5°C 0°C 5°C 10°C
-5°C
-10°C
-2°C
-15°C
-20°C
Outdoor unit heat exchanger temp.
(Th
O-R
)
Outdoor air temperature (Th
O-A
)
(a) Conditions for starting defrosting
When all the following conditions are met, the defrosting operation will start:
Operation mode
Functional item
Cooling Heating
Dehumidify
Thermostat ON Thermostat OFF Thermostat ON Thermostat OFF
Defrost
Indoor unit fan
Indoor unit electronic
expansion valve
Compressor
Outdoor unit fan
Drain motor
Solenoid valve (20VU)
Solenoid valve (20 VF)
4way valve (20SL,SS)
Solenoid valve (SV1, L,S)
Remote controller
command
According to deter-
mined frequency
/
/
Remote controller
command
Fully closed
Remote controller
command
Fully closed
Remote controller
command
According to deter-
mined frequency
/
/
Intermittent
(3)
operation
Fully closed
→
Fully open
→
/
According to deter-
mined frequency
/
/
/
/
fan
Individual definitions
Individual definitions
Model
FDCP224HKXRE2A (V)
FDCP280HKXRE2A (V)
Total operation frequency
of compressors (Hz)
Operation frequency (Hz)
Inverter (CM1)
35 ~ 9535 ~ 95
5
30sec
35
60
Partial load
Full load
Time
Frequency (Hz)
(3) Switchover compensation of 4-way valve
The compressor is operated with partial load at 5 to 35 Hz irrespective of decision
frequency for 30 seconds after starting, and then the frequency is increased to 60
Hz with full load.