Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 585
2014 IMPREZA WRX STI SERVICE MANUAL
QUICK REFERENCE INDEX
G1180BE7
BODY SECTION
HVAC SYSTEM (HEATER, VENTILATOR
AND A/C)
AC
Page
General Description . . . . . . . . . . . . . . . . . . . . ...2
Air Conditioning System . . . . . . . . . . . . . . . . . . ...17
Refrigerant Pressure with Manifold Gauge Set . . . . . . . . . . 18
Refrigerant Recovery Procedure . . . . . . . . . . . . . . . ..19
Refrigerant Charging Procedure . . . . . . . . . . . . . . . ..20
Refrigerant Leak Check . . . . . . . . . . . . . . . . . . ...23
Compressor Oil . . . . . . . . . . . . . . . . . . . . . . 24
Blower Motor Unit Assembly . . . . . . . . . . . . . . . . . 25
Blower Motor . . . . . . . . . . . . . . . . . . . . . . . 26
Power Transistor (Auto A/C Model) . . . . . . . . . . . . . . .27
Blower Resistor (Manual A/C Model) . . . . . . . . . . . . . ...28
Heater Core . . . . . . . . . . . . . . . . . . . . . . . ..29
Control Unit (Manual A/C Model) . . . . . . . . . . . . . . . .30
Control Unit (Auto A/C Model) . . . . . . . . . . . . . . . . ..31
Compressor . . . . . . . . . . . . . . . . . . . . . . . ..32
Condenser . . . . . . . . . . . . . . . . . . . . . . . . 34
Heater and Cooling Unit . . . . . . . . . . . . . . . . . . ...36
Evaporator . . . . . . . . . . . . . . . . . . . . . . . . 37
Hose and Pipe . . . . . . . . . . . . . . . . . . . . . . ..41
Relay and Fuse . . . . . . . . . . . . . . . . . . . . . . 42
Pressure Switch (Triple Pressure Switch) . . . . . . . . . . . . 43
Ambient Sensor (Auto A/C Model) . . . . . . . . . . . . . . ...44
Sunload Sensor (Auto A/C Model) . . . . . . . . . . . . . . ...46
In-Vehicle Sensor (Auto A/C Model) . . . . . . . . . . . . . . 47
Air Vent Grille . . . . . . . . . . . . . . . . . . . . . . ...49
Heater Duct . . . . . . . . . . . . . . . . . . . . . . . ..50
Heater Vent Duct . . . . . . . . . . . . . . . . . . . . . ..51
A/C Filter . . . . . . . . . . . . . . . . . . . . . . . . ..52
General Diagnostic Table . . . . . . . . . . . . . . . . . . .53
AC-2
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
1. General Description
A: SPECIFICATION
1. HEATER SYSTEM
2. A/C SYSTEM
Item
Specifications
Condition
Heating capacity
5.0 kW (4,299 kcal/h, 17,059
BTU/h) or more
• Air flow control dial: FOOT
• Temperature adjustment dial: MAX HOT
• Temperature difference between hot water
and inlet air: 65°C (149°F)
• Hot water flow rate: 360 L (95.1 US gal,
79.2 Imp gal)/h
Air flow rate
290 m
3
(10,243 cu ft)/h
FOOT mode (FRESH), MAX HOT at 12.5 V
Max air flow rate
480 m
3
(16,954 cu ft)/h
• Temperature adjustment dial: MAX COOL
• Fan dial:
Auto A/C model: 7th position
Manual A/C model: 4th position
• FRESH/RECIRC switch: RECIRC
Heater core size
(height × length × width)
257.5 × 118.5 × 27 mm
(10.1 × 4.67 × 1.06 in)
—
Blower motor
Type
Magnet motor 260 W or less
12 V
Fan type and size
(diameter × width)
Sirocco fan type
150 × 75 mm (5.91 × 2.95 in)
—
Item
Specifications
Type of air conditioner
Reheat air-mix type
Cooling capacity
5.0 kW [at 480 m
3
(16,954 cu ft)/h]
(4,299 kcal/h, 17,059 BTU/h)
Refrigerant
HFC-134a (CH
2
FCF
3
)
[0.5±0.05 kg (1.1±0.11 lb)]
Compressor
Type
Rotary fixed capacity (DVK-10R)
Discharge
105 cc (6.41 cu in)/rev
Max. permissible speed
7,700 rpm
Magnet clutch
Type
Dry, single-disc type
Power consumption
38.8 W
Type of belt
V-belt 4 PK
Pulley dia. (effective dia.)
100 mm (3.9 in)
Pulley ratio
1.32
Condenser
Type
Sub cool type
Core face area
0.188 m
2
(2.002 sq ft)
Core thickness
16 mm (0.63 in)
Radiation area
4.5 m
2
(48.44 sq ft)
Expansion valve
Type
Block
Evaporator
Type
Dual-tank
Dimensions (W × H × T)
290.1 × 172 × 39 mm
(11.42 × 6.77 × 1.54 in)
Blower fan
Fan type
Sirocco fan
Outer diameter × width
150 × 75 mm (5.91 × 2.95 in)
Power consumption
260 W
Condenser fan (Sub fan)
Motor type
Magnet
Power consumption
120 W
Fan outer diameter
318.5 mm (12.5 in)
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