2006 GREAT WALL HOVER air conditioning

CD Player and Air Conditioning System-6
Turn the ignition switch from OFF to ON
The display symbols all light up
failure of the switch or display tune
NO
Press down “Temp+” switch
Enter into self-diagnosis procedur1?
NO“ Te mp +” switch failure
Step 1:
Display “01”
(set t he temperature zone)
all other display symbols turn of
f
Press
down
“Temp+” switch
Step 2: Display
“02”(set the
temperature
z one)
The inspection procedures
During the period of 10 seconds after the engine is started(turn the ignition switch from OFF to ON), press OF F, A U T O ,
RR and MODE once more, and the pressing of MODE switch shall last at least 2 seconds
.
A ll sensors are good.
Display
“000”(outsidetemperature)

CD Player and Air Conditioning System-7
C ode off ailu re S ensor f ai lure
10 0 O pen c ircu itof outsid e t em perature sens or
20 0 S hortcirc uit o f o utside temp eratur e s ensor
01 0 O pen c ircu itof i nside temp eratur e s ensor
02 0 s hortcirc ui t o f ins ide t em perature sens or
00 1 O pen c ircu itof temp erat ur e s ensor o f the evap orator
00 2 S hortcirc uit o f tem perature sens or ofthe e vapo rator
Step 3: Display “03”(set the temperature zone)
Display the outside temperature value
Press down “Temp+” switch
Step 4: Display “04”(set the temperature zone
)
Sensor
failure
The code of the sensor with failure
is showed on the display screen
.
Press down
“Temp+” switch
Press down
“Temp+” switch
Step 5:
Display “05”
(set t he temperature zone)
Display the inside temperature value
Display the temperature value of the evaporator
Press down
“Temp+” switch

CD Player and Air Conditioning System-8
Step 6: Display “06”(set the temperature zone)
Press down “Temp+” switch
Display the detection code of mode/
temperature damper executor
Press down “Te mp+” switch
Step 7: display
“07”(set the temperature zone)
Action of the executor mechanism
:
M ode damper: wind to the person
Circulation damper: internal circulation
Te mperature damper: cold end
Wind amount: the maximum
Compressor: enabled Note: X is a digital number without specific meaning; the code
number
is displayed in the outside temperature display zone.
d isplay
“08”
C

Code number Code Meaning
0x0 Temperature damper executor works normally
0x1 Detection for temperature damper executor is in progress.
0x2 Temperature damper executor failure
00x Mode damper executor works normally
01x Detection for mode damper executor is in progress.
02x Mode damper executor failure

CD Player and Air Conditioning System-9
Step 9: display “09”
Action of the executor mechanism:
Mode damper: wind to the person and the fee
Circulation damper: internal circulation
Temperature damper: in the middle
W ind amount: bigger
Compressor: enabled
Action of the executor mechanism
:
M ode damper: wind to the feet and defrost
Circulation damper: external circulation
Te
m perature damper: in the middle Wind amount: small
Compressor: off
display
“
10”(set the temperature zone)
Action of the executor mechanism
:
M
ode damper: wind to the person and the feet
Circulation damper: external circulation
Te mperature damper: hot end
Wind amount: medium
Compressor: enabled
Press down
“Temp+” switch
Press
down
“Temp+” switch

CD Player and Air Conditioning System-10
Refrigeration of air conditioner failed
T rou ble Des crip tion s Ana l ysis o f the Cause
1.No pick -up o f com pressor 1.
fuse burned down , com presso r’s r elay dama ge
d
2. pressu re sw itch contac t d isco nn ected, short c ircu itor open circ uit o f the
ro utin
g
3. open circ ui t o f clutch’ s w indi ng
4. sw itch burned down
5. ma ster relay b urne d d ow
n
6.
s lid e o f the clut ch
7. beltof the c om presso r b roke ortoo l oose
8. comp ressor failur
e
9. sens or failur e(ju dg ed by read ing t he failu recode
)
10. insu ffic ient cold me dia, lowe r system p ress ur e(< 0 .97M Pa
)
11. system pressu re abov e 1 .37M Pa
12. water t em peratu re of the e ngine t oo high
13. V oltag e o f the clut ch below 7
V
2. Pick -up o f Com pressor 1.
norm
ally -ope n c ontact of the c om presso r’s r elay stuc k a nd seriou s leaka ge
of system cold me dia, system runn ing s hortof cold me di
a
2. no wind from the b lowe
r
R e frig eratio n of
ai r c ondition in
g
syst emfaile
d
3.no wind from the b lowe
r 1.
fuse burned down
2. mo tor b rush ofthe b lowe r dam aged
3. sw itch ofthe b lowe r dam aged
4. comi ng off o f d istrib utio n w ire c onnector s o r circu itdisc
onne cted
5. speed-ad justin g m odule d amaged
6. no wind from the b lowe r w hen a t high s peed, h igh- sp ee d r elay dama ge
d
Press down “Temp+” switch
Step 11: display “11”(set the temperature zone)
Action of the executor mechanism
:
M ode damper: defrost
Circulation damper: external circulation
Te mperature damper: cold end
Wind amount: the minimum
Compressor: off
Attention: during the inspection period fr om step 7 to step 11, the controlle r
will for cibly 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
m ethods as visual inspection, listening to abnormal sound or touching the air vent by hand so as to judge whether
there is any improper operation.
T rouble Diagnosis and T roubleshooting of A i r Conditioning System
Air cooling system

CD Player and Air Conditioning System-11
b .Insufficient refrigeration output
T rou ble D escrip tion s Ana l ysis o f the Cause
I nad equate
re fri g eratio
n 1.
wind amount
is no rm al 1.
comp ress or wo rks n orma ll
y
(1 ) low- leve l p ressu reathigh -pressu reand l ow -pressu reside
s
a. bloc k o f exp ansion valv
e
b. op enness of expa nsion v alve too n arro
w
(2 ) h igh- leve l p ressu reathigh -pressu reand l ow -pressu reside
s
a. failur e t o h igh- vo ltag e p ip
elin e,flow not smooth
b. ma lfun ctio n o f the rm o resisto
r
c. op
enne ssof expa nsion v alve too w ide
d. too m uch r efrige ration oi
l
e. too m uch r efrige rant
f. po or heat diss ipatio n o f the cond ense
r
(3 ) p ress ure a t high- vo ltag e s ide t oo lo
w
a. low- pr
essu repipe line dama ged
b. bloc k o f low -pressu repipe lin
e
(4 )pressu reatlow- pr
essu reside too l ow
a. the e vapo rato r f rosted
b. bloc k o f expansion valv
e
c. low- pr
essu repipe line not smo oth
d. ma lfun ctio n o f the rm o resisto
r
(5 )pressu re at low- pr
essu re side some time norm al, s ometim es with negative pressu re,
mo istu re and i ce bloc k i n a irco oling s yste
m
(6 )neg ative p ress ur e a t low -pressu reside , p ressu reathigh -pressu reside too l ow , block ofai
r
co oling s yste
m
(7 )pressu reatlow- pr
essu reside too l ow , pressu reathigh -pressu reside too h i gh
a. intern al bloc k o f drier of f lui d r eservo ir
b. bloc k o f high- pr essu re pipe lin
e
(8 )pressu reatlow- pr
essu reside too h igh, pressu re athigh -press ure s ide t oo low
a. leak ag e o f the comp resso
r
b. dama ged v alve ofcomp resso
r
(9 )poo r h eat r ad iation ofcond enser d ue tosm all w ind a mo unt from t hecond ensing blow er
2. comp ress or wo rks i mp rope rl
y
(1 )int erna l m alfu nc tion ofcomp ress or
(2 )belt o f com pr
esso r too loos e o r slidi ng
(3 )fai lu re of elec trom agnetic c lutc
h
a. low vol tage ofpowe r suppl
y
b. mu tual interfer en ce ofthe s tato r and roto
r
c. ma lfun ctio n o f amp lifier s tabi lizi ng the i dle s peed
d. circ uit d isco nn ected, comi ng off o f the joi n ts
e. po or operatio n o f the sw itch and r elay
f. sh ort c ircu itan d o pen c ircu itof the r outing
g. po or earthi ng
3. othe r c ause
s
ba d s ealin g o f w agon

CD Player and Air Conditioning System-12
e .Precautions for the overhaul of air cooling system
When the air cooling system encounters the trouble, the cause for such trouble shall be analyzed inlightof trouble varieties,
followed with the examination and report work.
c. T he c ooling system some time s w orks wh ile some time s refus es towo rk.
T rou ble Des cri p tion s Ana l ysis o f the C ause
1.comp ress or wo rks n orma l l y 1.
ice b lock i nthe c ool i ng s yste
m
2. failu reof therma l resisto r o r tem perature sens ing b ul
b
3. poor contac t o f A /Cswitch
4. cond ensing blow erdama ge
d
T he c ooling system
so me time s p rodu ce
s
re f ri g eratio n e f f ect whil
e
so me time s not
.
comp resso r w orks i mprop erl y 1.s
lid e o f the clut ch
2. comi ng off o f the clut ch ’ s wind i n
g
3. poor earthi ng ofclut ch ’ s wind i n
g
d. N oise o f the air c oolin g s ystem
T r ou ble Des cription s Ana l ysis o f the C ause
No ise o f the air c ooling system too
lo ud N o
ise t oo l oud (1
) b elt t oo
loos e or w orn t oo mu ch
(2 ) f asteni ng screw o f mounting h olde r o f the comp resso
r
lo os en ed
(3 ) m ounti n g h olde r o f the comp resso r dam aged
(4 ) i nter na l p arts of the c om pr
esso r dam aged
(5 ) t oo mu chref ri g eratio n o ilor none
(6 ) .
slid e o f the clut ch
(7 ) . B e aring o f the clut ch runni ngshort o f o i lor dama ge
d
(8 ) . mo tor b earing ofthe b lowe r dam aged
(9 ) h olde r o f the blow erbrok en or
loos ened
(1 0) blad e o f the blow erbrok en or
loos ened
(1 1) . F rict io n o f the blow er’ s blad e w ith o ther comp onents

CD Player and Air Conditioning System-13
1 .CC6460K air conditioning system is designed with SD7V16 compressor, whose refrigeration oil type as
specified is SP-10P AG; hence application of other type of refrigeration oil may damage the parts and compo
nents of the compressor. When the
air conditioning system goes through maintenance and replacement of
parts, it should be added with new refrigeration oil, whose volume is listed as follows: the evaporator and
condenser: 30ml; the drier: 20ml; the pipeline: 10ml.
Addition of refrigeration oil can be available with two methods: The direct addition and the vacuum suction
2 .D irect addition method
a. remove the oil filler plug and fill with the specified SP-10P AG refrigeration oil.
b. observe through the hole of oil filter plug and rotate front plate of clutch to make the piston connecting rod right positio n in the
center of the hole of oil filter plug.
c. insert the dipstick along the right side of piston connecting rod till the top of dipstick touches the case of the compresso
r
d. pull out the dipstick and examine the graduations (grooves) of refrigeration oil, the readings shall be within the range of 4-6
scales
.
e. screw firmly the oil filter plug with the fastening torque of 14.7± 4.9N
.m
3. Vacuum suction method:
Firstly pump out the refrigerating system to the vacuum of 0.2x105Pa, and then fill with the specified 0.2x10 5 Pa refrigeration oil;
the detailed steps are as follows:
a. switch off the high-pressure manual valve and the auxiliary valve.
b. dismantle the high-pressure side hose from the manifold pressure gauge and insert it into the oil cu
p
c. open the auxiliary valve and have the refrigeration oil sucked into the refrigerating system from the oil cup.
d. when the refrigeration oil in the oil cup is almost pumped out to the vacuum, then immediately turn off the auxiliary valve
to
prevent the air from being sucked into the system
.
e. secure the hose adapter at high-pressure side to the manifold pressure gauge, start the vacuum pump and turn on the high-
pressure manual valve, then turn on the auxiliary valve to pump the system to the vacuum state of 0.2x10
5Pa, keep such state
for 15mins so as to discharge out the air flowing into the system along with the oil.
V ol ume of Refrigeration Oil Addition and its Methods
2.ai r h eating system
T r oubl e Cau ses o f the trouble
H e ati n g n otsuppl i ed or
no t s
uf f i cientl y suppl i ed 1.
blow erof air c ondition erf ai l u re 2.relay o f the blow erdamage
d
3. heati n g w ater pipe bloc k e d 4 . coo ling water p i pe b lock ed
5. col d/h ot damp erexecutor damage d 6. ins
uf f i cien t c oo ling l iqu id
N o rotation ofblow er 1.
f use burned
down orpoor contac t o f the switch
2. mo tor o f the blowe r burne d d ow
n
3. op en circ uit o f h igh- sp eed relay o f the blow er
4. speed-ad j usti n g m odule d am aged
5. short c ircu it
leak age o f w ater W ater p ipe o f ai rhe ati n g a ged, inse cu re j oi nt
O v erhe at 1.
speed-ad j usti n g r esi sto r o f the f an d am aged
2. col d/h ot damp erexecutor damaged
I nsu f f i cien t h otair
vo lume f or d efro stin
g 1.
mode executor dama ge
d
2. f al li n g o f fof the d riv e ro
d
3. damp ernot in p osi ti o
n
4. air v ent b l ock ed
5. inad equa te heatin g s
upply
6. inst
alla tion ofwind tunn elno t fi t
7. circ uit d i sco nn ecte
d