Mitsubishi Heavy Industries FDCR224KXE6, Technical Manual

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58
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'11 • KX-T-166
7.1 Operation control function by the outdoor controller
(A) Normal control
(1) Operation of major functional components under each operation mode
Operation mode
Fonctional item
Cooling/Dehumidifying
Stopped
Fan
Heating
Thermostat
ON
Thermostat
OFF
Defrost
Thermostat
ON
Thermostat
OFF
Compressor (CM) 〇 × × 〇 × 〇
Solenoid for CM (52X1, 52X2) 〇 〇 ×/〇 〇 〇 〇
Outdoor unit fan mortor (FMo-1) 〇 ×/〇 ×/〇 〇/× ×/〇 〇→×
Outdoor unit fan mortor (FMo-2) 〇/× ×/〇 ×/〇 〇/× ×/〇 〇→×
4 way solenoid valve (20S) × × × 〇 〇 〇→×
Heating electronic expansion valve
(EEVH)
Fully open Fully open ※ 1
OpeningAngle
Control
※ 2
Fully closed /
Fully open
Super cooling coil electronic expansion
valve (EEVSC)
OpeningAngle
Control
Fully closed Fully closed Fully closed Fully closed Fully closed
Solenoid valve (SV6) (oil return) 〇/× × × 〇/× × 〇/×
Solenoid valve (SV1) (fluid return) 〇/× 〇/× × 〇/× 〇/× 〇/×
Solenoid valve (SV11) (gas bypass) × × × 〇/× × ×
Solenoid valve (SV12) (gas bypass) × × × × ×
Crankcase heater (CH1) 〇/×
〇/×
〇/× 〇 〇/× 〇/× 〇/×
Note (1) It means 〇 : ON, × : OFF, 〇/× : -, ×/〇 : ON or OFF.
(2) This shows the state of output when all indoor units are under the same mode.
(3)
※ 1 : When stopped from cooling, it is fully open
When stopped from heating, it is fully closed unless another degree of opening is specified by the electronic expansion valve (EEV) control at the
stop.
※ 2 : When stopped from heating, it is fully closed unless another degree of opening is specified by the electronic expansion valve (EEV) control at the
stop.
R
ESP
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FP
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1736
7 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER