2005 Citroen C4 air filter

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CONDITIONING
434
C5HP1CKC
Changing the filtering/drying cartridge
The condenser (4)has a cylinder acting as a fluid reservoir with a filtering cartridge incorporated in it.
a:Inlet union
b:Outlet union
NOTE:The filtering cartridge cannot be swapped.
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)C4
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AIR
CONDITIONING
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)
Changing the filtering/drying cartridge
Tools.
[1]Charge station:
(according to workshop equipment)[2]TORX adaptor: TORX 70 FACOM
Removing.
Depressurise the aircon circuit, using tool [1].
Uncouple the hose (2).
Remove:
- The air filter assembly (3).
- The nuts (1).
Protect the radiator harness with strong cardboard cut to the dimensions of the radiator.
Move aside the cooling fan.
Remove:
- The screws (4).
- The brackets (5).
B1BP23FCB1BP23GC
XSARA PICASSO
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AIR
CONDITIONING
SPECIAL FEATURES: AIR CONDITIONING SYSTEM (R 134.a)
Changing the filtering/drying cartridge
Move aside the radiator/condenser assembly.
Remove the plug (6), using tool [2].
Support the radiator/condenser assembly thus moved aside.
Remove the filtering/drying cartridge (7), using pliers.
Refitting.
Refit the filtering/drying cartridge (7).
Clean the threads of the plug (6).
It is essntial to change the O-ring seals (8).
Lubricate the O-ring seals (8)with aircon compressor oil.
Refit:
- The plug (6), using tool [2], tighten to 1,4 ± 0,2 m.daN.
- The brackets (5).
- The screws (4).
- The cardboard from the radiator harness.
- The nuts (1).
- The air filter assembly (3).
Couple the hose (2).
Recharge the circuit (R134.a)
(according to equipment) (see corresponding
operation).
Check the operation of the air conditioning.
C5HP14NCC5HP14PCC5HP14QC
XSARA PICASSO
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CONDITIONING
442
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Interpretation of the diagnosis
«x»Check satisfactory
«y»Lack of aircon fluid in the aircon circuit
«z» Excess aircon fluid in the aircon circuit
«aa» Filtering and drying cartridge clogged
«ab»Other problems
(see table on previous page)
E5AP2FCD
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CONDITIONING
443
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Aircon circuit diagnosis table
Principal problem Symptom Possible causes
Aircon compressor clutch
Lack of aircon fluid in the aircon circuit
The clutch of the aircon compressor does not Aircon pressostat
engage, or disengages suddenly Aircon evaporator sensor
The aircon compressor does not turn Electrical circuit
(wiring, fuses, etc.)
or stops suddenly
Auxiliaries drive belt
Aircon compressor
The clutch of the aircon compressor remains Filtering and drying cartridge
engaged and stops suddenly
Aircon pressure reducer
Leak of aircon fluid
Aircon compressor clutch
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CONDITIONING
445
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Aircon circuit diagnosis table
Principal problem Symptom Possible causes
Low pressure and high pressure too highAircon pressure reducer defective
Duct clogged
Low pressure too high and high pressure too low Aircon compressor seal defective
Aircon evaporator sensor defective
Low pressure too low and high pressure too high Aircon pressure reducer jammed
Abnormal levels of pressuretoo high
Filtering and drying cartridge obstructed
Duct clogged
Duct clogged
Aircon pressure reducer jammed
Low pressure and high pressure too low
Lack of aircon fluid in the aircon circuit
Aircon compressor defective
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AIR
CONDITIONING
CHECKING THE EFFICIENCY OF THE AIR CONDITIONING SYSTEM
Aircon circuit diagnosis table
Principal problem Symptom Possible causes
Low pressure normal and high pressure too high Presence of air in the aircon circuit
Low pressure normal and high pressure too lowAircon pressostat defective
Evaporator sensor defective
Abnormal levels of pressure Low pressure too high and high pressure normal Aircon pressure reducer jammed open
Filtering and drying cartridge saturated or
Low pressure too low and high pressure normal clogged
Aircon pressure reducer iced up
Under cooling too weak Lack of aircon fluid
Air conditioning operating inExcess aircon fluid
back-up mode
Under cooling excessive Presence of air in the aircon circuit
Filtering and drying cartridge clogged
NOTE: In all cases, measure the excessive heating (SC)and the blow air temperature.
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AIR
CONDITIONING
(1)High pressure valve
(2)Low pressure valve
(3)Pressostat
(tighten to 0,6 m.daN)
(4)Aircon pressure reducer
(5)Filtering and drying cartridge
(6)Buffer capacity
«a»Outlet and inlet of the aircon pressure reducer, tighten to 0,8 m.daN
«b»Outlet and inlet of the aircon compressor, tighten to 0,7 m.daN
AIR CONDITIONING SYSTEM (R 134.a)
C5HP1BHP
Engines: ET3J4 - TU5JP4
C4
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