Specifications

1044
FDC-HKXR
(k) Protection of Power Transistor from Overheat
When the temperature of the power transistor increases to the set temperature, stop the inverter immediately and let is reset
by itself 3 minutes later. If the power transistor is overheated again within 2 hours, turn off 52C, bring it to an abnormal
stop and the inspection displays (Remote controller : E41, indoor unit green LED : Continuous flashing, red LED : OFF,
outdoor unit green LED : Continuous flashing, red LED : 4 times flash) will appear.
Full Load
Hot gas bypass
Close
Close
Open
Open
55°C65°C
30°C
40°C
(l) Protection of Number of Connected indoor Units
When the number of connected indoor units exceeds the quantities shown in the table below, they will come to an abnormal
stop, and the inspection displays (Remote controller E43, indoor unit green LED : Continuous flashing, red LED : OFF,
outdoor unit green LED : Continuous flashing, red LED : 7 times flash) will appear.
(m) Frost prevention during cooling
To prevent frost during a cooling operation, check temperature (to be detected with Th
I-R) of the indoor unit heat exchanger
and lower the frequency of indoor unit (opening of expansion valve) when the temperature drops below 3°C.
When the heat exchanger temperature is below 2°C for more than 2 minutes, turn off the thermostat and start a ventilating
operation. If the heat exchanger temperature rises above 16°C after the thermostat is turned off, reset it to a cooling operation.
But this operation shall not be executed for 10 minutes after the thermostat is turned on.
Also when temperatures of standing units have been below 2°C for an hour in succession, turn off the compressor for 3
minutes.
(n) Control of Temperature under Dome
The liquid bypass solenoid valve (SV1) is controlled according to the temperature of the thermistor (Th
O-C) under the dome
fitted to the compressor.
Number of connected units
FDCP2001 type
8 units
FDCP2501 type
8 units
ThO-C < 55°C SV1 close
Th
O-C > 65°C SV1 open
ThO-C < 30°C SV1 close
Th
O-C > 40°C SV1 open