Refrigerant Circuit - Fujitsu AUXB04GALH Service Manual

2. OUTDOOR UNIT

2-1 REFRIGERANT CIRCUIT

Outdoor unit
OS
TH1
CMP
(INV)
TH11
CMP
ACM
Indoor unit1
TH21
TH24
No. Part name
1 Compressor temp. Sensor 1
2 Discharge temp. Sensor 1
3 High pressure Swithch
4 Check valve
5 Oil Separator
6 Compressor (Inverter)
7 Bypass / Oil return Valve
8 Oil return Valve
9 High pressure Sensor
10 Bypass Valve
11 Suction gas temp. Sensor
12 Low pressure Sensor
13 Acuumulator
14 4-Way-Valve 1
15 4-Way-Valve 2
16 Service port
17 Heat-Ex 1 gas temp. Sensor
18 Heat Exchanger 1
19 Heat-Ex 2 gas temp. Sensor
20 Heat Exchanger 2
21 Outdoor unit FAN (Motor)
22 Outdoor temp. Sensor
23 Heat-Ex 1 liquid temp. Sensor
24 Heat-Ex 2 liquid temp. Sensor
25 Pressure regulation valve
HPS
HPSW1
TH3
LPS
SV1
SV2
ACM
SV3
FAN21
EEV21
TH22
HEX21
Function
Detects the compressor temperature
Detects the discharge temperature
Detects abnormal high pressure (4.20 MPa)
Comp. pressure equaization
Separates oil and refrigerant
Operation range ( 20 rps - 90 rps )
HP-LP bypass in protection, Returns the oil to COMP
Returns the oil to Compressor
Detects the High pressure
HP-LP bypass in protection / Comp. pressure equalization
Detects the temp of refrigerant
Detects Low pressure
Collects refrigerant and the returned oil
Changes operation mode of HEX 1
Changes operation mode of HEX 2
Measure High pressure for Service
Detects the temperature of refrigerant
Operates as Condenser / Evaporator
Detects the temperature of refrigerant
Operates as Condenser / Evaporator
Control FAN speed for heat exchange of HEX
Detects the ambient temperature
Detects the temperature of refrigerant
Detects the temperature of refrigerant
Operates in regulated pressure (4.00MPa)
TH9
TH7
4WV 1
HEX1
EEV1
TH8
TH10 EEV2
4WV 2
HEX2
FAN1
TH2
6
No.
Part name
26 Outdoor unit EEV1
27 Outdoor unit EEV2
29 Liquid pipe temp. Sensor 1
30 Outdoor unit EEV3
31 Sub-Cool Heat exchanger
Sub-Cool HEX gas outlet temp
32
Sensor
33 Liquid pipe temp. Sensor 2
36 3way-valve (Liquid)
37 3way-valve (Gas)
38 Service port
39 I.U HEX outlet temp. Sensor
40 Room temp. Sensor
41 Indoor unit FAN (Motor)
42 I.U Heat Exchanger
43 I.U HEX inlet temp. Sensor
44 Indoor unit EEV
45 4-Way-Valve 3
46 Check valve
02-01
EEV3
TH4
SCHEX TH5
TH6
4WV 3
38
: Capillary : Strainer
LIQUID LINE
GAS LINE
Function
Controls the flow of ref. based on target pressure
Controls the flow of ref. based on target pressure
Detects the temperature of liquid refrigerant
Controls ref. subcooling /Operats in protection
Subcool of liquid refrigerant
Detects the temperature of refrigerant
Detects the temperature of liquid refrigerant
Open / Close for Liquid line
Open / Close for Gas line
Measure Low pressure for Service
Detects the temperature of refrigerant
Detects the temperature of room
Controlled by setting / protection / Thermo OFF
Operates as Condensor / Evapolator
Detects the temperature of refrigerant
Controlled by setting / protection / Thermo OFF
Changes operation mode
Prevents the liquid refrigerant return at cooling