Geely Emgrand X7. Manual part — 419

8 Heating, venting and A/C system . . . . ... 1677

8.1 Warning and precaution . . . . . . . .. 1677

8.1.1 Warning and precaution . . . . . . ... 1677

8.2 Auto conditioning . . . . . . . . . ... 1678

8.2.1 Specifications . . . . . . . . . . . ... 1678

8.2.1.1 Fastener specifications . . . . . . . .. 1678

8.2.1.2 Refrigeration system parameters . . . 1679

8.2.1.3 System Capacity . . . . . . . . . . 1679

8.2.1.4 Resistance Properties of Evaporator
TemperatureSensor . . . . . . . . . . . ... 1680

8.2.2 Description and operation. . . . . . . ... 1681

8.2.2.1 Description and operation . . . . . . . 1681

8.2.3 System operating principle . . . . . . .. 1685

8.2.3.1 Functional description of A/C control panel.
. . . . . . . . . . . . . . . . . . . .. 1685

8.2.3.2 Working Principles of Automatic A/C . ... 1690

8.2.4 Component position . . . . . . . . . .1693

8.2.4.1 A/C system element layout location plan . 1693

8.2.4.2 Structural layout of A/C main unit. . . .. 1694

8.2.4.3 A/C panel schematic diagram . . . . . 1695

8.2.5 Disassemble drawings . . . . . . . . . 1696

8.2.5.1 Disassemble drawings . . . . . . . . .1696

8.2.6 Electrical schematic diagram . . . . . ... 1698

8.2.6.1 A/C control system schematic diagram . 1698

8.2.6.2 A/C system circuit sketch . . . . . ... 1699

8.2.7 Diagnostic information and procedures . ... 1702

8.2.7.1 Diagnosis descriptions . . . . . . . .. 1702

8.2.7.2 Visual inspection. . . . . . . . . . . 1702

8.2.7.3 List of A/C control module terminals . ... 1702

8.2.7.4 Data flow table. . . . . . . . . . . . 1703

8.2.7.5 Controller self-inspection testing. . . . . 1704

8.2.7.6 DTC List . . . . . . . . . . . . .. .1705

8.2.7.7 Electrical Device Failure Relevance. . . 1706

8.2.7.8 A/C does not work . . . . . . . . .. 1707

8.2.7.9 AC Blower Does Not Work . . . . . 1714

8.2.7.10 Insufficient A/C system refrigeration
capacity . . . . . . . . . . . . . . . . ... 1718

8.2.7.11 Insufficient A/C system heating capacity..
. . . . . . . . . . . . . . . . . . . .. 1719

8.2.7.12 Recycling and addition of A/C refrigerant
. . . . . . . . . . . . . . . . . . . .. 1721

8.2.8 Dismantle and installation . . . . . . ... 1725

8.2.8.1 A/C control panel replacement . . . . . 1725

8.2.8.2 Ambient air temperature replacement . .. 1725

8.2.8.3 A/C pressure switch replacement . . . 1725.

8.2.8.4 Solar sensor replacement. . . . . . . . 1725

8.3 Power A/C . . . . . . . . . . . . . . 1726

8.3.1 Specifications . . . . . . . . . . . .. 1726

8.3.1.1 Fastener specifications . . . . . . . . 1726

8.3.1.2 Refrigeration system parameters . . . .. 1726

8.3.1.3 System capacity . . . . . . . . . . 1727

8.3.1.4 Resistance properties of evaporator
temperature sensor. . . . . . . . . . . . ... 1728

8.3.2 Description and operation . . . . . . ... 1729

8.3.2.1 Description and operation . . . . . . 1729

8.3.3 System operating principle . . . . . . . .1733

8.3.3.1 Functional description of A/C control panel.
. . . . . . . . . . . . . . . . . . . .. 1733

8.3.3.2 Power A/C work principle . . . . . . 1735

8.3.4 Component position . . . . . . . . . 1738

8.3.4.1 A/C system element layout location plan . 1738

8.3.4.2 Structural layout of A/C main unit . . ... 1739

8.3.4.3 A/C panel schematic diagram . . . . ... 1740

8.3.5 Disassemble drawings . . . . . . . ... 1741

8.3.5.1 Disassemble drawings . . . . . . . .. 1741

8.3.6 Electrical schematic diagram. . . . . . .. 1743

8.3.6.1 A/C control system schematic diagram . 1743

8.3.6.2 A/C system circuit sketch . . . . . .. 1744

8.3.7 Diagnostic Information and Procedures . .. 1747

8.3.7.1 Diagnosis descriptions . . . . . . . . .1747

8.3.7.2 Visual inspection . . . . . . . . . 1747

8.3.7.3 A/C control module terminal list . . . . 1747

8.3.7.4 A/C clutch do not work . . . . . . .. 1749

8.3.7.5 A/C blower do not work . . . . . . . 1756

8.3.7.6 A/C system cooling capacity is lack . . . 1760

8.3.7.7 A/C system air warming is lack. . . . ... 1762

8.3.7.8 A/C refrigerant Recycling & recycling. 1763

8.3.8 Dismantle and installation . . . . . . ... 1767

8.3.8.1 Power A/C control panel replacement . .. 1767

8.3.8.2 A/C pressure switch replacement . . . . 1771

8.3.8.3 A/C filter element replacement. . . . . 1773

8.3.8.4 A/C mainhost assemblyreplacement. . . 1775

8.3.8.5 Expansion valve replacement . . . . ... 1779

8.3.8.6 Compressor replacement . . . . . . .. 1781

8.3.8.7 Blower speed regulation module replacement
. . . . . . . . . . . . . . . . . . . .. 1783

8.3.8.8 Blower motor replacement . . . . . ... 1784

8.3.8.9 Inside and outside circulation adjusting motor

replacement.

. . . . . . . . . . . . . . 1785

8.3.8.10 Cold-warm wind direction adjusting motor

replacement. . . . . . . . . . . . . . ... 1786

8.3.8.11 Temperature throttle motor replacement 1787

8.3.8.12 Heater core assembly replacement . . . 1788

8.3.8.13 Evaporator temperature sensor replacement
. . . . . . . . . . . . . . . . . . . .. 1790

8.3.8.14 Evaporator core assembly replacement 1792

8.3.8.15 Condenser replacement . . . . . . .. 1794

8.3.8.16 A/C pipe replacemen . . . . . . . .. 1796

8.3.8.17 A/C venting pipe replacement . . . . 1801

8.3.8.18 Instrument panel outlet replacement . .. 1804

8 Heating, venting and A/C system

8.1 Warning and precaution

8.1.1 Warning and precaution

Warning!

Relevant operation of the refrigerant should be done in a well-ventilated environment, without breathing
refrigerant vapor. The A/C refrigerant R-134a (tetrafluoroethane) and lubricating oil steam or fog should be
prevented from being inhaled. Stimulate eyes, nose and throat after contacting with them. Operated in a well
ventilated area.When cleaning R-134a from an A/C system, repairing equipment R-134a regenerating equipment
that is authenticated and meets requirements shall be applied. If the system discharges accidentally, ventilate the
work area prior to continuing to repair. Other health and safety information can be obtained from the refrigerant
and lubricating oil manufacturer.

Warning!

The negative terminal of the battery must be disconnected prior to repairing the appliance system. Forbid welding
or steam cleaning on the vehicle with A/C pipeline or part or close thereto.

Precaution relating to A/C refrigerant

Notes:

–

If skin contacts it, it may cause frostnip.

–

Must comply with specification was provided by manufacturer. During operation, wear proper safety goggles
and protective gloves.

The A/C refrigerant should avoid the operations as follows.

Notes:

–

Do not store refrigerant at a place with direct sunlight or heat sources.

–

When filling, the refrigerant bottles must not be upright. Keep valves down.

–

Refrigerant cylinder can not exposed in the snow area

–

Can not be drop off refrigerant cylinder

–

Do not.in any case. Directly discharge refrigerant to the atmosphere.

Can not be mix refrigerant, for example: R134a (fluoroethane) and R12 (Freon)

Precaution relating to refrigeration oil

Notes:

You must use the lubricating oil of the type and grade as specified by the compressor manufacturer. Lubricating
oil of different types and grades must not be mixed; otherwise this will damage the compressor. The lubricating
oil easily absorbs water, thereby shortening the contact time between the lubricating oil and the air as must as
possible.

Notes:

Forbid washing of the A/C system through water, corrosive solvent or flammable and explosive solvent. It is
recommended to use cleaning agent, such as R-141b and heptane etc.

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8.2 Auto conditioning

8.2.1 Specifications

8.2.1.1 Fastener specifications

Torque range

Fastener Name

Model

Metric (N·m)

English system
(lb-ft)

Pipeline system assembly hexagonal flange
face nut

M6 7-8

5-6

Pipeline system assembly hexagonal flange
face bolt

M6×12 10-12

7-9

Pipeline system assembly hexagonal flange
face bolt

M6×20 10-12

7-9

Pipeline system assembly hexagonal flange
face bolt

M6×20 18-20

13-15

Pipeline system assembly hexagonal flange
face bolt

M8×20 16-18

12-13

Compressor assembly hexagon-headed bolt

M8×105

28-30

21-22

Hexagon flange face bolt of condenser

M6×16

6-7

4-5

A/C head unit hexagon nut and spring gasket
assembling unit

M6 6-7

4-5

A/C head unit hexagon flange bolt

M6×12

6-7

4-5

A/C head unit hexagon bolt and spring gasket
assembling unit

M6×12 6-7

4-5

No.1,No.2 water pipe steel belt type elastic
hoop

- -

-

A/C control panel cross recessed pan head
self-tapping screw and flat gasket assembling
unit

ST4.2×16 3-4.5

2.2-3.3

1678