Suzuki SWIFT RS415 2017, Руководство по обслуживанию

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7B-13 Air Conditioning System:
Thermometer at center duct
NOTE:
If ambient temperature is approximately 30
q
C (86
q
F), it is possible to diagnose A/C system in detail
referring to the following table.
Condition Possible cause Correction
Crossing point is higher
than acceptable range
(“E” area) Insufficient or excessive charge of refrigerant Check refrigerant pressure.
Dirty or bent A/C evaporator fins Clean or repair.
Air leakage from cooling (heater) unit or air duct Repair or replace.
Malfunctioning, switch over function of door in
cooling (heater) unit Repair or replace.
Compressor malfunction Check compressor.
Crossing point is lower
than acceptable range
(“F” area) Insufficient air volume from center duct (Heater
blower malfunction) Check blower motor and fan.
Compressor malfunction Check compressor.
Temp
. at Air Outlet of Center
V
entilation Louv
er
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
46.4
48.2
50.0
51.8
53.6
55.4
57.2
59.0
60.8
62.6
64.4
66.2
68.0
69.8
71.6
73.4
75.2
77.0
78.8
80.6
82.4
25 30 35
77 86 95
˚F ˚C
˚C
˚F
“E”
“F”
Acceptable range
Temp. near Air Inlet of HVAC unit
30
70
%
Humidity
I4RS0A720009-
Condition
Possible cause Correction Manifold gauge MPa (kg/cm 2 ) (psi)
Detail
Lo Hi
0.23 – 0.36
(2.3 – 3.6)
(33 – 51) 1.24 – 1.52
(12.4 – 15.2)
(176 – 216) Normal condition
— —
Negative pressure 0.5 – 0.6
(5 – 6)
(71.2 – 85.3)
The low pressure side
reads a negative pressure,
and the high pressure side
reads an extremely low
pressure.
Presence of frost around
tubing to and from
receiver/dryer and
expansion valve. Dust particles or water
droplets are either
stuck or frozen inside
expansion valve,
preventing the
refrigerant from
flowing. Clean expansion valve.
Replace it if it cannot
be cleaned.
Replace receiver/dryer.
Evacuate the A/C
system and recharge
with fresh refrigerant.