CD Player and Air Conditioning System-10
Refrigeration of air conditioner failed
Trouble Descriptions Analysis of the Cause
1.No pick-up of compressor
1. fuse burned down, compressor’s relay damage
d
2. pressure switch contact disconnected, short circuit or open circuit of the
routin
g
3. open circuit of clutch’s winding
4. switch burned down
5. master relay burned dow
n
6.
slide of the clutch
7. belt of the compressor broke or too loose
8. compressor failur
e
9. sensor failure(judged by reading the failure code
)
10. insufficient cold media, lower system pressure(< 0.97MPa
)
11. system pressure above1.37MPa
12. water temperature of the engine too high
13.V oltage of the clutch below 7
V
2. Pick-up of Compressor
1. norm
ally-open contact of the compressor’s relay stuck and serious leakage
of system cold media, systemrunning short of cold medi
a
2. no wind from the blowe
r
Refrigeration of
air conditionin
g
system faile
d
3. no wind from the blowe
r
1. fuse burned down
2. motor brush of the blower damaged
3. switch of the blower damaged
4. coming off of distribution wire connectors or circuit disc
onnected
5. speed-adjusting module damaged
6. no wind from the blower when at high speed, high-speed relay damage
d
Press down “Temp+” switch
Step 11: display “11”(set the temperature zone)
Action of the executor mechanism:
Mode damper: defrost
Circulation damper: external circulation
Temperature damper: cold end
Wind amount: the minimum
Compressor: off
Attention: during the inspection period from step 7 to step 11, the controller
will forcibly transit the output signal based on
the code number displayed on the integrated display screen to the functioned executor; the inspection must be done with
such
methods as visual inspection, listening to abnormal sound or touching the air vent by hand so as to judge whether
there is any improper operation.
Trouble Diagnosis and Troubleshooting of A ir Conditioning System
Air cooling system
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