seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Refrigerant circuit > < Dismantling and assembling air conditioning system controls

Leon Mk2

Repairing air conditioning and heating - engine compartment
   
Repairing air conditioning and heating - engine compartment
  Note
Parts marked with * can be repaired only by specially trained mechanics in suitable workshops → Chapter since the refrigerant must be extracted beforehand.
1 - Evaporator*
q   In passenger compartment
2 - Vacuum hose
q   Vacuum hose connection diagram → Chapter
q   To brake servo or to vacuum pump
3 - Water drain pipe
q   Checking: water drain
4 - Thermal switch for air conditioning system shut-off -F163- and thermal switch for radiator fan third speed -F165-
q   Thermal switch for radiator fan third speed -F165- switches radiator fan to third speed as coolant temperature rises (on at 112 °C and off at 108 °C).
q   Thermal switch for air conditioning system shut-off -F163- switches air conditioning system magnetic clutch -N25- off when the refrigerant temperature is too high (off at 119° C, on at 112° C)
q   Removing and installing → Fig.
5 - Connector*
q   Rotating
6 - Evacuating and charging valve*
q   High-pressure side
7 - Condenser*
8 - Hose protection
9 - Evacuating and charging valve*
q   Low-pressure side
10 - High-pressure safety valve*
  WARNING
Danger of freezing injuries.
When the pressure in the refrigerant circuit is too high (e.g. due to overfilling), refrigerant leaks out of high-pressure safety valve.
Wear protective goggles and suitable clothing.
q   Checking → Chapter
11 - Air conditioner compressor*
q   Self-regulating
Running-in procedures → Chapter.
12 - Air conditioning system magnetic clutch -N25-
q   Removing and installing → Chapter
13 - Connector*
q   Rotating
14 - Receiver with dryer*
  Note
Under certain conditions, it is no longer necessary to renew the receiver with dryer cartridge each time the refrigerant circuit is opened. See Workshop Manual Air conditioning system with refrigerant R134a → Rep. Gr.00, Technical data, Renewing components.
q   Removing and installing → Chapter
15 - Ambient temperature switch -F38-
q   Switches off air conditioning system magnetic clutch -N25- if the ambient temperature is too low (off at -1 °C, on at 7 °C).
16 - Connector*
q   Rotating
17 - Air conditioning system pressure switch -F129-
q   Checking → Chapter
q   8 Nm
q   Renew O-ring (note part number)
18 - Expansion valve*
19 - Insulator
20 - Dust and pollen filter
q   Removing → Chapter

   
Removing and installing thermal switch for air conditioning system shut-off -F163- and thermal switch for radiator fan third speed -F165-
  Note
t  Cooling system is pressurized when engine is warm. If necessary, release pressure before carrying out repairs.
t  Refill with coolant after installing thermal switch.
t  This illustration shows a vehicle with engine code AAA
1 - Clip
2 - Thermostat housing
3 - O-ring
4 - Thermal switch for air conditioning system shut-off -F163- / thermal switch for radiator fan third speed -F165-
5 - Coolant temperature display sender -G2- / thermal switch for fan run-on -F87-
6 - Coolant temperature sender -G62-
  V87-1444

Refrigerant circuit > < Dismantling and assembling air conditioning system controls