Chery Tiggo 5 (T21). Manual - part 325

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1. System composition

This model is equipped with two types of A/C: electrical A/C and automatic A/C. The A/C system consists 
of the following four parts: 
Air conditioning and distribution system: air mixing and distributor part of HVAC, inner/outer circulation 
inlet, outlet and air filter.
Control system: A/C control panel assembly, inner/outer circulation damper motor, mode damper servo 
motor, mix damper servo motor, blower, blower speed resistor, A/C pressure sensor, evaporator 
temperature sensor, heater core sensor (for automatic A/C), room temperature sensor (for automatic A/C), 
outside temperature sensor (for automatic A/C) and sun sensor.
Heating system: heater core assembly, heating inlet hose, heating outlet hose and engine cooling 
circulation system.  
Cooling system: compressor assembly, condenser assembly (w/receiver drier), expansion valve, 
evaporator core assembly and A/C high/low pressure line. 

2. Operation

Outside fresh air enters the air inlet filter assembly through the cowl top opening at the right side of 
windshield base. Fresh air flows through the evaporator core and heater core, and then enters the vehicle 
through the outlets on the instrument panel and the floor. The intake air volume can be adjusted by the 
blower speed switch on the A/C control panel assembly. Turn on the compressor assembly by pressing the 
A/C switch on the A/C control panel. The refrigerant is compressed by the compressor assembly and 
converted into high temperature - high pressure gas, which is then condensed into high pressure liquid in 
the condenser. Then the liquid is filtered and dried by the receiver drier and delivered to the expansion 
valve and becomes low-pressure liquid through throttling and depressurization. Finally the liquid enters the 
evaporator in vehicle, absorbs the heat and evaporates, thus refrigeration is achieved. A/C heating is 
realized by the engine coolant circulation system. Heater core is the main component of the heating 

Blower Motor

Expansion Valve

A/C Pressure Sensor

Evaporator

Condenser

Outside Air

Compressor

High-pressure
Gas

High-pressure
Liquid

Low-pressure
Liquid

Low-pressure
Gas

RT21310020

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system. With the engine running, engine coolant flows from the engine water pump to the heater core, the 
heater core transmits the heat from engine coolant to the air that flows through the heater core. At this 
time, the A/C switch is off. The air flowing through the heater core becomes hot wind through the heat 
exchanger, thus providing heating. The temperature adjustment control mechanism can be controlled by 
rotating the temperature adjustment knob, and the mix damper closes when temperature adjustment knob 
is rotated counterclockwise to MAX COOL position. If the airflow does not flow through the heater core, the 
heat transmission will not occur. When rotating the temperature adjustment knob clockwise from MAX 
COOL position, the mix damper will open slowly, allowing air flows through the heater core. Most of the 
airflow is heated in this way and the discharged air becomes warm. When the temperature adjustment 
knob is rotated counterclockwise to MAX HOT position, the mix damper is opened fully and all the air flows 
through the heat core, thus the air is heated. Mode buttons on the A/C control panel are  used to direct                       
temperature adjusted air through selected outlets.

Specifications

Torque Specifications

Description

Torque (N·m)

A/C Control Panel Assembly Fixing Screw

2.5 ± 0.5

Coupling Bolt Between A/C High/Low Pressure Line 
and Expansion Valve

7 ± 1

Fixing Nut Between HVAC Assembly and Instrument 
Panel Crossmember Assembly 

7 ± 1

Fixing Bolt Between HVAC Assembly and Instrument 
Panel Crossmember Assembly 

4 ± 1

Fixing Bolt Between HVAC Assembly and Body

7 ± 1

Air Inlet Assembly Right Fixing Screw

2.5 ± 0.5

Air Inlet Assembly Left Fixing Screw

2.5 ± 0.5

Air Inlet Assembly Rear Fixing Screw

2.5 ± 0.5

Left Foot Fan Shield Fixing Screw 

2.5 ± 0.5

Right Foot Fan Shield Fixing Screw 

2.5 ± 0.5

Coupling Bolt Between Expansion Valve and 
Expansion Valve Mounting Pressure Plate 

7 ± 1

Blower Case Assembly Upper Fixing Screw

2.5 ± 0.5

Blower Case Assembly Lower Fixing Screw

2.5 ± 0.5

Evaporator Case Assembly Fixing Screw

2.5 ± 0.5

Heater Core Line Pressure Plate Fixing Screw 

2.5 ± 0.5

Heater Core Line Cover Plate Fixing Screw 

2.5 ± 0.5

Mode Damper Adjustment Mechanism Set Fixing 
Screw 

2.5 ± 0.5

Coupling Nut Between A/C High/Low Pressure Line 
Fixing Bracket and Body 

7 ± 1

Fixing Bolt Between A/C Low Pressure Line and 
Compressor Assembly 

25 ± 2.5

Fixing Bolt Between A/C High Pressure Line and 
Compressor Assembly 

25 ± 2.5

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Refrigerant Charging Specification

Refrigerant Oil Charging Specifications

Fixing Nut Between A/C High Pressure Line I and 
Condenser Assembly 

7 ± 1

Fixing Nut Between A/C High Pressure Line II and 
Condenser Assembly 

7 ± 1

Coupling Bolt Between Rear Mounting Cushion 
Assembly and Rear Mounting Bracket

70 ± 5

Coupling Nut Between Rear Mounting Cushion 
Assembly and Rear Mounting Bracket

70 ± 5

Coupling Bolt Between Front Mounting Cushion 
Assembly and Front Mounting Bracket

70 ± 5

Coupling Nut Between Front Mounting Cushion 
Assembly and Front Mounting Bracket

70 ± 5

Coupling Bolt Between Right Mounting Cushion 
Assembly and Right Mounting Bracket

80 ± 6

Coupling Nut Between Right Mounting Cushion 
Assembly and Right Mounting Bracket

80 ± 6

Coupling Bolt Between Right Mounting Cushion 
Assembly and Body

70 ± 5

Fixing Bolt Between Compressor Assembly and 
Mounting Bracket

40 ± 5

Fixing Bolt Between Condenser Assembly and Tank 
Upper Crossmember Fixing Bracket 

7 ± 1

Description

Torque (N·m)

Description

Charging Capacity (g)

R134a Refrigerant

600 ± 10

Description

Charging Capacity (ml)

Compressor Assembly Replacement

It is necessary to pour out 50 ml of refrigerant oil 

from the new compressor assembly

Condenser Replacement

50

Evaporator Replacement

50

A/C Line Replacement

10

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Tools

General Tools

Refrigerant Recycling Machine

Digital Multimeter

RCH0000046

RCH0000002