–
285
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(4) Operation control function by the outdoor controller
(A) Normal control
(1) Operation of major functional components under each operation mode
Operation mode
Functional components
Cooling/Dehumidifying Heating
Compressor
ON
Compressor
OFF
All stop by remote
controller
Compressor
ON
Compressor
OFF
All stop by remote
controller
Magnetic Contactor for
compressor (52C1)
ON ON OFF ON ON OFF
Crankcase heater (CH1) ON/OFF*1 ON/OFF*1 ON ON/OFF*1 ON/OFF*1 ON
Compressor (CM1)
Cooling low
pressure control
Stop Stop
Heating high
pressure control
Stop Stop
Fan motor (FMo1)
Normal control Stop Stop Normal control Stop Stop
4-way valve (20S) OFF OFF OFF ON ON ONï‚ŽOFF*2
Electronic expansion
valve for sub-cooling coil
(EEVSC)
Normal control Fully closed Fully closed Fully closed Fully closed Fully closed
Electronic expansion valve
for heating (EEVH)
Fully open Fully open Fully open
Normal control Fully closed Fully closed
Note (1) Above list shows the conditions at steady state under each operation mode.
(2) *1 According to discharge superheat
(3) *2 It turns OFF after retaining ON condition for a certain minutes
(2) Compressor control
Compressor rotation speed at Cooling (Dehumidifying) and Heating operations are as follows.
Unit: rps
Item
Model
Cooling (Dehumidifying) Operation Heating Operation
FDCP112KXE6 40 ~ 77 20 ~ 110
FDCP140KXE6 40 ~ 100 20 ~ 110
FDCP155KXE6 40 ~ 106 20 ~ 110
(3) Outdoor fan control
(a) Control contents of fan tap and fan speed
Outdoor fan tap
Fan speed
Cooling Heating
FMo1 [rpm] FMo1 [rpm]
0th speed 0 0
1th speed 200 130
2th speed 300 300
3th speed 400 400
4th speed 500 500
5th speed 600 600
6th speed 740 740
7th speed 820 820
8th speed 870 870
(b) Fan control during cooling
During cooling and dehumidifying, fan speed is controlled in accordance with the high pressure (sensed by PSH) and the
ambient air temperature (sensed by Tho-A).
(i) Initial fan speeds are as follows.
Initial outdoor fan speed at cooling
Model Ambient air temp ≤ 5°C 5°C < Ambient air Temp. < 10°C 10°C ≤ Ambient air Temp.
All models 1th speed 3th speed 5th speed
(ii) During normal operation, the speed is changed in accordance with the high pressure value.
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