Geely FC - Page 227

(1) Refrigerant system with normal function.
Meter reading
Low pressure end:
0.15-0.25Mpa
High pressure end:
1.37-1.57Mpa
(2) Water in cooling system.
Air conditioner--Refrigerant
When cooling system is
working, the pressure in low
pressure end changes to
vacuum or normal periodically.
Water vapor enters refrigerant
system, and freezes on the ex-
pansion valve, the system
stops cycle in short time, when
ice melts, it returns to normal
again.
(1)Change the condenser.
(2)Remove water in pipeline
with method of taking out
vacuum repeatedly.
(3)Fill applicable new
refrigerant.
z Dryer locates at full humidity
state.
z Water vapor of refrigerant
freezes on the outlet orifice
of expansion valve to ob-
stacle freezing cycle.
Phenomenon Possible reason Diagnose Method
(3) Lack refrigerant
Situation: too cold periodically, then lose cooling degree.
z The pressure of high and low
pressure end is low.
z There is air bubble on
window.
z Refrigerant leaks.
Some part of refrigerant system
leaks.
(1)Check it with leakage
measurer, if necessary, re-
pair it.
(2)Fill refrigerant to applicable
quantity.
(3)If meter pressure reading is
0, after checking and repair-
ing leaking position, take out
vacuum.
z Refrigerant in system lacks.
z Cooling degree is not
enough.
Phenomenon Possible reason Diagnose Method
State: lack refrigerant
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