Electrolux EXI09HJIWI User manual

Models: EXI09HJIWI/EXI09HJIWE
EXI12HJIWI/EXI12HJIWE
(Refrigerant R410A)
Service Manual

30 Installation and Maintenance
Service Manual
9. Maintenance
9.1 Error Code List
NO. 0DOIXQFWLRQ
Name
Display
0HWKRG
of Indoor
Unit
'LVSOD\0HWKRGRI2XWGRRU
Unit
$&VWDWXV 3RVVLEOH&DXVHV
'XDO
Code
Display
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GLVSOD\VWDWXVDQGGXULQJ
EOLQNLQJ21VDQG2))
0.5s
Yellow
Indicator
Red
Indicator
*UHHQ
Indicator
1
+LJK
SUHVVXUH
protection of
system
E1
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
except indoor fan operates, all loads
stop operation.
'XULQJKHDWLQJRSHUDWLRQWKH
FRPSOHWHXQLWVWRSV
3RVVLEOHUHDVRQV
5HIULJHUDQWZDVVXSHUDEXQGDQW
3RRUKHDWH[FKDQJHLQFOXGLQJ
DQGEDGUDGLDWLQJHQYLURQPHQW
$PELHQWWHPSHUDWXUHLVWRRKLJK
2Antifreezing
protection E2
2))6
DQGEOLQN
3 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUDQGRXWGRRUIDQVWRS
ZKLOHLQGRRUIDQRSHUDWHV
3RRUDLUUHWXUQLQLQGRRUXQLW
)DQVSHHGLVDEQRUPDO
(YDSRUDWRULVGLUW\
3
6\VWHPEORFN
or refrigerant
OHDNDJH
E3
2))6
and
EOLQN
9 times
7KH'XDO&RGH'LVSOD\ZLOO
VKRZ(XQWLOWKHORZSUHVVXUH
VZLWFKVWRSRSHUDWLRQ
/RZSUHVVXUHSURWHFWLRQ
/RZSUHVVXUHSURWHFWLRQRI
system
/RZSUHVVXUHSURWHFWLRQRI
compressor
4
+LJK
GLVFKDUJH
WHPSHUDWXUH
protection of
compressor
E4
2))6
DQGEOLQN
7 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUDQGRXWGRRUIDQVWRS
ZKLOHLQGRRUIDQRSHUDWHV'XULQJ
KHDWLQJRSHUDWLRQDOOORDGVVWRS
3OHDVHUHIHUWRWKHPDOIXQFWLRQ
DQDO\VLVGLVFKDUJHSURWHFWLRQ
RYHUORDG
52YHUFXUUHQW
protection E5
2))6
DQGEOLQN
5 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUDQGRXWGRRUIDQVWRS
ZKLOHLQGRRUIDQRSHUDWHV'XULQJ
KHDWLQJRSHUDWLRQDOOORDGVVWRS
6XSSO\YROWDJHLVXQVWDEOH
6XSSO\YROWDJHLVWRRORZDQG
ORDGLVWRRKLJK
(YDSRUDWRULVGLUW\
6&RPPXQLFDWLRQ
0DOIXQFWLRQ E6 2))
'XULQJFRROLQJRSHUDWLRQ
FRPSUHVVRUVWRSVZKLOHLQGRRUIDQ
PRWRURSHUDWHV'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWVWRSV
5HIHUWRWKHFRUUHVSRQGLQJ
PDOIXQFWLRQDQDO\VLV
7
+LJK
WHPSHUDWXUH
resistant
protection
E8
2))6
DQGEOLQN
6 times
'XULQJFRROLQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWVWRSV
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
RYHUORDGKLJKWHPSHUDWXUH
resistant).
8EEPROM
PDOIXQFWLRQ EE
2))6
DQGEOLQN
11 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
5HSODFHRXWGRRUFRQWUROSDQHO$3
9
Limit/
decrease
IUHTXHQF\
GXHWRKLJK
WHPSHUDWXUH
RIPRGXOH
EU
$OOORDGVRSHUDWHQRUPDOO\ZKLOH
RSHUDWLRQIUHTXHQF\IRUFRPSUHVVRU
is decreased
'LVFKDUJLQJDIWHUWKHFRPSOHWHXQLW
LVGHHQHUJL]HGIRUPLQVFKHFN
ZKHWKHUWKHWKHUPDOJUHDVHRQ
,300RGXOHRIRXWGRRUFRQWURO
SDQHO$3LVVXI¿FLHQWDQGZKHWKHU
WKHUDGLDWRULVLQVHUWHGWLJKWO\
,ILWVQRXVHSOHDVHUHSODFHFRQWURO
panel AP1.
10
0DOIXQFWLRQ
protection of
MXPSHUFDS
C5
:LUHOHVVUHPRWHUHFHLYHUDQG
EXWWRQDUHHIIHFWLYHEXWFDQ
QRWGLVSRVHWKHUHODWHG
command
1RMXPSHUFDSLQVHUWRQ
PDLQERDUG
,QFRUUHFWLQVHUWRIMXPSHUFDS
-XPSHUFDSGDPDJHG
$EQRUPDOGHWHFWLQJFLUFXLWRI
PDLQERDUG

31
Installation and Maintenance
Service Manual
11 *DWKHULQJ
refrigerant )R
:KHQWKHRXWGRRUXQLWUHFHLYH
VLJQDORI*DWKHULQJUHIULJHUDQW
WKHV\VWHPZLOOEHIRUFHGWRUXQ
XQGHUFRROLQJPRGHIRUJDWKHULQJ
refrigerant
Nominal cooling mode
12
Indoor
DPELHQW
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
LQGRRUXQLWRSHUDWHVZKLOHRWKHU
ORDGVZLOOVWRSGXULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
/RRVHQLQJRUEDGFRQWDFWRI
LQGRRUDPELHQWWHPSVHQVRUDQG
PDLQERDUGWHUPLQDO
&RPSRQHQWVLQPDLQERDUGIHOO
GRZQOHDGVVKRUWFLUFXLW
,QGRRUDPELHQWWHPSVHQVRU
GDPDJHGFKHFNZLWKVHQVRU
UHVLVWDQFHYDOXHFKDUW
0DLQERDUGGDPDJHG
13
Indoor
HYDSRUDWRU
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
$&VWRSVRSHUDWLRQRQFHUHDFKHVWKH
VHWWLQJWHPSHUDWXUH&RROLQJGU\LQJ
internal fan motor stops operation
ZKLOHRWKHUORDGVVWRSRSHUDWLRQ
KHDWLQJ$&VWRSRSHUDWLRQ
/RRVHQLQJRUEDGFRQWDFWRI
Indoor
HYDSRUDWRUWHPSVHQVRUDQG
PDLQERDUGWHUPLQDO
&RPSRQHQWVRQWKHPDLQERDUG
fall
GRZQOHDGVVKRUWFLUFXLW
,QGRRUHYDSRUDWRUWHPSVHQVRU
GDPDJHGFKHFNWHPSVHQVRU
YDOXH
FKDUWIRUWHVWLQJ
0DLQERDUGGDPDJHG
14
2XWGRRU
DPELHQW
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
2))6
and
EOLQN
6 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLQJ
FRPSUHVVRUVWRSVZKLOHLQGRRUIDQ
RSHUDWHV'XULQJKHDWLQJRSHUDWLRQ
WKHFRPSOHWHXQLWZLOOVWRSRSHUDWLRQ
2XWGRRUWHPSHUDWXUHVHQVRU
KDVQWEHHQFRQQHFWHGZHOORU
LVGDPDJHG3OHDVHFKHFNLWE\
UHIHUULQJWRWKHUHVLVWDQFHWDEOHIRU
WHPSHUDWXUHVHQVRU
15
2XWGRRU
condenser
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
2))6
and
EOLQN
5 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUVWRSVZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
2XWGRRUWHPSHUDWXUHVHQVRU
KDVQWEHHQFRQQHFWHGZHOORU
LVGDPDJHG3OHDVHFKHFNLWE\
UHIHUULQJWRWKHUHVLVWDQFHWDEOHIRU
WHPSHUDWXUHVHQVRU
16
2XWGRRU
GLVFKDUJH
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
2))6
and
EOLQN
7 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
compressor will sop after operating
IRUDERXWPLQVZKLOHLQGRRUIDQZLOO
RSHUDWH'XULQJKHDWLQJRSHUDWLRQ
WKHFRPSOHWHXQLWZLOOVWRSDIWHU
RSHUDWLQJIRUDERXWPLQV
2XWGRRUWHPSHUDWXUHVHQVRU
KDVQWEHHQFRQQHFWHGZHOORULV
GDPDJHG3OHDVHFKHFNLWE\
UHIHUULQJWRWKHUHVLVWDQFHWDEOHIRU
WHPSHUDWXUHVHQVRU
7KHKHDGRIWHPSHUDWXUHVHQVRU
KDVQWEHHQLQVHUWHGLQWRWKHFRSSHU
WXEH
17
Limit/
decrease
IUHTXHQF\
GXHWR
RYHUORDG
)
2))6
and
EOLQN
3 times
$OOORDGVRSHUDWHQRUPDOO\ZKLOH
RSHUDWLRQIUHTXHQF\IRUFRPSUHVVRU
is decreased
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
RYHUORDGKLJKWHPSHUDWXUH
resistant)
18
Decrease
IUHTXHQF\
GXHWR
RYHUFXUUHQW
)
2))6
and
EOLQN
once
$OOORDGVRSHUDWHQRUPDOO\ZKLOH
RSHUDWLRQIUHTXHQF\IRUFRPSUHVVRU
is decreased
7KHLQSXWVXSSO\YROWDJHLVWRRORZ
6\VWHPSUHVVXUHLVWRRKLJKDQG
RYHUORDG
19
Decrease
IUHTXHQF\
GXHWR
KLJKDLU
GLVFKDUJH
)
2))6
and
EOLQN
twice
$OOORDGVRSHUDWHQRUPDOO\ZKLOH
RSHUDWLRQIUHTXHQF\IRUFRPSUHVVRU
is decreased
2YHUORDGRUWHPSHUDWXUHLVWRRKLJK
5HIULJHUDQWLVLQVXI¿FLHQW
0DOIXQFWLRQRIHOHFWULFH[SDQVLRQ
YDOYH(.9

32 Installation and Maintenance
Service Manual
20
Limit/
decrease
IUHTXHQF\
GXHWR
antifreezing
)+
2))6
and
EOLQN
4 times
All loads operate normally,
ZKLOHRSHUDWLRQIUHTXHQF\IRU
compressor is decreased
3RRUDLUUHWXUQLQLQGRRUXQLWRUIDQ
speed is too low
21
Voltage for
'&EXVEDU
LVWRRKLJK
PH
2))6
and
EOLQN
13 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
0HDVXUHWKHYROWDJHRISRVLWLRQ
/DQG1RQZLULQJERDUG;7LIWKH
YROWDJHLVKLJKHUWKDQ9$&WXUQ
RQWKHXQLWDIWHUWKHVXSSO\YROWDJH
LVLQFUHDVHGWRWKHQRUPDOUDQJH
,IWKH$&LQSXWLVQRUPDO
PHDVXUHWKHYROWDJHRIHOHFWURO\WLF
capacitor C on control panel (AP1),
LILWVQRUPDOWKHUHVPDOIXQFWLRQ
IRUWKHFLUFXLWSOHDVHUHSODFHWKH
control panel (AP1)
22
Voltage of
'&EXVEDU
is too low
PL
2))6
and
EOLQN
12 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
0HDVXUHWKHYROWDJHRISRVLWLRQ
/DQG1RQZLULQJERDUG;7LIWKH
YROWDJHLVKLJKHUWKDQ9$&
WXUQRQWKHXQLWDIWHUWKHVXSSO\
YROWDJHLVLQFUHDVHGWRWKHQRUPDO
range.
,IWKH$&LQSXWLVQRUPDO
PHDVXUHWKHYROWDJHRIHOHFWURO\WLF
capacitor C on control panel (AP1),
LILWVQRUPDOWKHUHVPDOIXQFWLRQ
IRUWKHFLUFXLWSOHDVHUHSODFHWKH
control panel (AP1)
23
Compressor
Min
IUHTXHQFHLQ
test state
P0 6KRZLQJGXULQJPLQFRROLQJRU
PLQKHDWLQJWHVW
24
Compressor
rated
IUHTXHQFHLQ
test state
P1 6KRZLQJGXULQJQRPLQDOFRROLQJRU
QRPLQDOKHDWLQJWHVW
25
Compressor
PD[LPXP
IUHTXHQFHLQ
test state
P2 6KRZLQJGXULQJPD[FRROLQJRU
PD[KHDWLQJWHVW
26
Compressor
intermediate
IUHTXHQFHLQ
test state
P3 6KRZLQJGXULQJPLGGOHFRROLQJRU
PLGGOHKHDWLQJWHVW
27
2YHUFXUUHQW
protection of
SKDVH
FXUUHQWIRU
compressor
P5
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
5HIHUWRWKHPDOIXQFWLRQ
analysis (IPM protection, loss
RIV\QFKURQLVPSURWHFWLRQDQG
RYHUFXUUHQWSURWHFWLRQRISKDVH
FXUUHQWIRUFRPSUHVVRU
28
&KDUJLQJ
PDOIXQFWLRQ
of capacitor
PU
'XULQJFRROLQJDQGGU\LQJ
operation, compressor will stop
ZKLOHLQGRRUIDQZLOORSHUDWH
'XULQJKHDWLQJRSHUDWLRQWKH
FRPSOHWHXQLWZLOOVWRS
5HIHUWRWKHSDUWWKUHH²FKDUJLQJ
PDOIXQFWLRQDQDO\VLVRIFDSDFLWRU
29
0DOIXQFWLRQ
RIPRGXOH
WHPSHUDWXUH
VHQVRUFLUFXLW
P7
'XULQJFRROLQJDQGGU\LQJ
operation, compressor will stop
ZKLOHLQGRRUIDQZLOORSHUDWH
'XULQJKHDWLQJRSHUDWLRQWKH
FRPSOHWHXQLWZLOOVWRS
5HSODFHRXWGRRUFRQWUROSDQHO$3

33
Installation and Maintenance
Service Manual
30
0RGXOHKLJK
WHPSHUDWXUH
protection
P8
'XULQJFRROLQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
$IWHUWKHFRPSOHWHXQLWLV
GHHQHUJL]HGIRUPLQVFKHFN
ZKHWKHUWKHWKHUPDOJUHDVHRQ,30
0RGXOHRIRXWGRRUFRQWUROSDQHO$3
LVVXI¿FLHQWDQGZKHWKHUWKHUDGLDWRU
LVLQVHUWHGWLJKWO\,ILWVQRXVH
please replace control panel AP1.
31
Decrease
IUHTXHQF\
GXHWRKLJK
WHPSHUDWXUH
UHVLVWDQWGXULQJ
KHDWLQJ
operation
H0
$OOORDGVRSHUDWHQRUPDOO\ZKLOH
RSHUDWLRQIUHTXHQF\IRUFRPSUHVVRU
is decreased
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
RYHUORDGKLJKWHPSHUDWXUH
resistant)
32
Static
GHGXVWLQJ
protection
H2
33
2YHUORDG
protection for
compressor
H3
2))6
DQGEOLQN
8 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
1. Wiring terminal OVC-COMP
LVORRVHQHG,QQRUPDOVWDWHWKH
UHVLVWDQFHIRUWKLVWHUPLQDOVKRXOG
EHOHVVWKDQRKP
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
GLVFKDUJHSURWHFWLRQRYHUORDG
34 System is
DEQRUPDO H4
2))6
DQGEOLQN
6 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
RYHUORDGKLJKWHPSHUDWXUH
resistant)
35 IPM
protection H5
2))6
DQGEOLQN
4 times
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
5HIHUWRWKHPDOIXQFWLRQ
analysis (IPM protection, loss
RIV\QFKURQLVPSURWHFWLRQDQG
RYHUFXUUHQWSURWHFWLRQRISKDVH
FXUUHQWIRUFRPSUHVVRU
36
0RGXOH
WHPSHUDWXUH
LVWRRKLJK
H5
2))6
DQGEOLQN
10 times
37
Internal motor
(fan motor) do
not operate
H6
Internal fan motor, external fan
motor, compressor and electric
KHDWHUVWRSRSHUDWLRQJXLGHORXYHU
stops at present location.
%DGFRQWDFWRI'&PRWRUIHHGEDFN
terminal.
2. Bad contact of DC motor control
end.
)DQPRWRULVVWDOOLQJ
0RWRUPDOIXQFWLRQ
0DOIXQFWLRQRIPDLQERDUGUHY
GHWHFWLQJFLUFXLW
38
'HV\QFKURQL
zing of
compressor
H7
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
5HIHUWRWKHPDOIXQFWLRQ
analysis (IPM protection, loss
RIV\QFKURQLVPSURWHFWLRQDQG
RYHUFXUUHQWSURWHFWLRQRISKDVH
FXUUHQWIRUFRPSUHVVRU
39 3)&
protection HC
2))6
DQGEOLQN
14 times
'XULQJFRROLQJDQGGU\LQJ
operation, compressor will stop
ZKLOHLQGRRUIDQZLOORSHUDWH
'XULQJKHDWLQJRSHUDWLRQWKH
FRPSOHWHXQLWZLOOVWRS
operation.
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
40
2XWGRRU'&
fan motor
PDOIXQFWLRQ
L3
2))6
and
EOLQN
14 times
2XWGRRU'&IDQPRWRU
PDOIXQFWLRQOHDGWRFRPSUHVVRU
stop operation,
'&IDQPRWRUPDOIXQFWLRQRU
V\VWHPEORFNHGRUWKHFRQQHFWRU
loosed

34 Installation and Maintenance
Service Manual
41 Power
protection L9
2))6
DQGEOLQN
9 times
Compressor stop operation and
2XWGRRUIDQPRWRUZLOOVWRSVODWWHU
PLQXWHVODWWHUIDQPRWRUDQG
compressor will restart
7RSURWHFWWKHHOHFWURQLFDO
FRPSRQHQWVZKHQGHWHFWKLJK
power
42
,QGRRUXQLW
DQGRXWGRRU
XQLWGRHVQW
PDWFK
LP
2))6
DQGEOLQN
16 times
&RPSUHVVRUDQG2XWGRRUIDQPRWRU
FDQ¶WZRUN
,QGRRUXQLWDQGRXWGRRUXQLWGRHVQW
PDWFK
43 )DLOXUHVWDUWXS LC
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
operation.
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
44
0DOIXQFWLRQRI
SKDVHFXUUHQW
detection
FLUFXLWIRU
compressor
U1
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
5HSODFHRXWGRRUFRQWUROSDQHO$3
45
0DOIXQFWLRQRI
YROWDJH
dropping for
'&EXVEDU
U3
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLRQWKHFRPSOHWHXQLWZLOOVWRS
6XSSO\YROWDJHLVXQVWDEOH
46
0DOIXQFWLRQ
of complete
XQLWVFXUUHQW
detection
U5
'XULQJFRROLQJDQGGU\LQJRSHUDWLRQ
WKHFRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWH'XULQJKHDWLQJ
RSHUDWLQJWKHFRPSOHWHXQLWZLOOVWRS
operation.
7KHUHVFLUFXLWPDOIXQFWLRQRQ
RXWGRRUXQLWVFRQWUROSDQHO$3
SOHDVHUHSODFHWKHRXWGRRUXQLWV
control panel AP1.
47
7KHIRXUZD\
YDOYHLV
DEQRUPDO
U7
,IWKLVPDOIXQFWLRQRFFXUVGXULQJ
KHDWLQJRSHUDWLRQWKHFRPSOHWH
XQLWZLOOVWRSRSHUDWLRQ
6XSSO\YROWDJHLVORZHUWKDQ
$&9
2.Wiring terminal 4V is loosened or
EURNHQ
3.4V is damaged, please replace
4V.
48
Zerocrossing
PDOIXQFWLRQRI
RXWGRRUXQLW
U9
'XULQJFRROLQJRSHUDWLRQ
FRPSUHVVRUZLOOVWRSZKLOHLQGRRU
IDQZLOORSHUDWHGXULQJKHDWLQJWKH
FRPSOHWHXQLWZLOOVWRSRSHUDWLRQ
5HSODFHRXWGRRUFRQWUROSDQHO$3
49
)UHTXHQF\
limiting
(power)
2))6
DQGEOLQN
13 times
50 Compressor
LVRSHQFLUFXLWHG
2))6
DQGEOLQN
once
51
7KH
WHPSHUDWXUH
IRUWXUQLQJ
RQWKHXQLWLV
UHDFKHG
2))6
DQGEOLQN
8 times
52
)UHTXHQF\
limiting
PRGXOH
WHPSHUDWXUH
2))6
DQGEOLQN
11 times
53 Normal
FRPPXQLFDWLRQ
contin-
RXVO\
54 Defrosting H1
'HIURVWLQJZLOORFFXULQKHDWLQJ
mode. Compressor will operate
ZKLOHLQGRRUIDQZLOOVWRSRSHUDWLRQ
,WVWKHQRUPDOVWDWH
55 X-fan mode AL
$IWHUWXUQRIIWKHXQLWLQGRRUIDQZLOO
still operate at low speed for 2min
DQGWKHQWKHFRPSOHWHXQLWZLOOEH
WXUQHGRII
,WVWKHQRUPDOVWDWH

35
Installation and Maintenance
Service Manual
56
Zero-crossing
inspection
FLUFXLW
PDOIXQFWLRQ
RIWKH,'8IDQ
motor
U8
Opera-
tion of
remote
controller
or control
panel is
DYDLODE
OHEXW
WKHXQLW
ZRQ¶WDFW
'LVFKDUJLQJVSHHGRI
FDSDFLWRULVVORZZKLFKOHDG
WRZURQJMXGJHPHQWRI
controller.
Zero-crossing detection
FLUFXLWRIPDLQERDUGLV
DEQRUPDO
5HIHUWRPDLQWHQDQFHÀRZFKDUW

36 Installation and Maintenance
Service Manual

37
Installation and Maintenance
Service Manual
Analysis or processing of some of the malfunction display:
1. Compressor discharge protection
3RVVLEOHFDXVHV VKRUWDJH RIUHIULJHUDQWEORFNDJHRI DLU ILOWHUSRRUYHQWLODWLRQRU DLUIORZVKRUW SDVV IRUFRQGHQVHUWKH V\VWHPKDV
QRQFRQGHQVLQJJDVVXFKDVDLUZDWHUHWFEORFNDJHRIFDSLOODU\DVV\LQFOXGLQJ¿OWHUOHDNDJHLQVLGHIRXUZD\YDOYHFDXVHVLQFRUUHFW
RSHUDWLRQPDOIXQFWLRQRIFRPSUHVVRUPDOIXQFWLRQRISURWHFWLRQUHOD\PDOIXQFWLRQRIGLVFKDUJHVHQVRURXWGRRUWHPSHUDWXUHWRRKLJK
3URFHVVLQJPHWKRGUHIHUWRWKHPDOIXQFWLRQDQDO\VLVLQWKHDERYHVHFWLRQ
2. Low voltage overcurrent protection
3RVVLEOHFDXVH6XGGHQGURSRIVXSSO\YROWDJH
3. Communication malfunction
3URFHVVLQJPHWKRG&KHFNLIFRPPXQLFDWLRQVLJQDOFDEOHLVFRQQHFWHGUHOLDEO\
4. Sensor open or short circuit
3URFHVVLQJPHWKRG&KHFNZKHWKHUVHQVRULVQRUPDOFRQQHFWHGZLWKWKHFRUUHVSRQGLQJSRVLWLRQRQWKHFRQWUROOHUDQGLIGDPDJHRIOHDG
ZLUHLVIRXQG
5. Compressor over load protection
3RVVLEOHFDXVHVLQVXI¿FLHQWRUWRRPXFKUHIULJUDQWEORFNDJHRIFDSLOODU\DQGLQFUHDVHRIVXFWLRQWHPSLPSURSHUUXQQLQJRIFRPSUHVVRU
EXUQLQJLQRUVWXFNRIEHDULQJGDPDJHRIGLVFKDUJHYDOYHPDOIXQFWLRQRISURWHFWRU
3URFHVVLQJPHWKRGDGMXVWUHIULJHUDQWDPRXQWUHSODFHWKHFDSLOODU\UHSODFHWKHFRPSUHVVRUXVHXQLYHUVDOPHWHUWRFKHFNLIWKH
FRQWDFWRURIFRPSUHVVRULV¿QHZKHQLWLVQRWRYHUKHDWHGLIQRWUHSODFHWKHSURWHFWRU
6. System malfunction
LHRYHUORDG SURWHFWLRQ:KHQ WXEH WHPSHUDWXUH&KHFN WKH WHPSHUDWXUH RI RXWGRRU KHDW H[FKDQJHU ZKHQ FRROLQJ DQG FKHFN WKH
WHPSHUDWXUHRILQGRRUKHDWH[FKDQJHUZKHQKHDWLQJLVWRRKLJKSURWHFWLRQZLOOEHDFWLYDWHG
3RVVLEOHFDXVHV2XWGRRUWHPSHUDWXUHLVWRRKLJKZKHQFRROLQJLQVXI¿FLHQWRXWGRRUDLUFLUFXODWLRQUHIULJHUDQWÀRZPDOIXQFWLRQ
SOHDVHUHIHUWRWKHPDOIXQFWLRQDQDO\VLVLQWKHSUHYLRXVVHFWLRQIRUKDQGOLQJPHWKRG
7. IPM module protection
3URFHVVLQJPHWKRG2QFHWKHPRGXOHPDOIXQFWLRQKDSSHQVLILWSHUVLVWVIRUDORQJWLPHDQGFDQQRWEHVHOIFDQFHOHGFXWRIIWKHSRZHUDQG
WXUQRIIWKHXQLWDQGWKHQUHHQHUJL]HWKHXQLWDJDLQDIWHUDERXWPLQ$IWHUUHSHDWLQJWKHSURFHGXUHIRUVHYHUWLPHVLIWKHPDOIXQFWLRQ
VWLOOH[LVWVUHSODFHWKHPRGXOH

38 Installation and Maintenance
Service Manual
9.2 Procedure of Troubleshooting
(1) Malfunction of Temperature Sensor F1, F2
roubleshooting for
F1,F2 malfunction
Is
the wiring terminal between the
temperature sensor and the controller
loosened or poorly contacted?
Insert the temperature
sensor tightly
yes
Is malfunction
eliminated
Is there short circuit due to trip-over of
the parts?
Make the parts upright
yes
Is malfunction
eliminated
Replace the mainboard
with the same model.
End
no
no
Is the
temperature sensor normal according
to the Resistance
able?
no
Replace it with a
temperature sensor
with the same model
no
yes
yes
Is malfunction
removed
no
yes
yes
no
Main detection points:
ƽ,VWKHZLULQJWHUPLQDOEHWZHHQWKHWHPSHUDWXUHVHQVRUDQGWKHFRQWUROOHUORRVHQHGRUSRRUO\FRQWDFWHG"
ƽ,VWKHUHVKRUWFLUFXLWGXHWRWULSRYHURIWKHSDUWV"
ƽ,VWKHWHPSHUDWXUHVHQVRUEURNHQ"
ƽ,VPDLQERDUGEURNHQ"
0DOIXQFWLRQGLDJQRVLVSURFHVV
Indoor Unit

39
Installation and Maintenance
Service Manual
(2) Malfunction of Blocked Protection of IDU Fan Motor H6
Main detection points:
ƽ,VWKHFRQWUROWHUPLQDORI3*PRWRUFRQQHFWHGWLJKWO\"
ƽ,VWKHIHHGEDFNLQWHUIDFHRI3*PRWRUFRQQHFWHGWLJKWO\"
ƽ7KHIDQPRWRUFDQWRSHUDWH˛
ƽ7KHPRWRULVEURNHQ"
ƽ'HWHFWLRQFLUFXLWRIWKHPDLQERDUGLVGH¿QHGDEQRUPDO"
0DOIXQFWLRQGLDJQRVLVSURFHVV
easure the voltage of this foot to neutral
wire on the mainboard
Start
off stir the blade with a tool
While power is
smoothly
Replace PG motor
End
yes
no
Is malfunction
eliminated
yes
no
Insert the control
terminal of PG
motor tightly
no
no
Reinstall the blade and
motor correctly
Is malfunction
eliminated
no
no yes
yes
Turn on the
unit again ; measure whether the output
voltage on control terminal for PG motor
is more than 50V within 1 min after the
louvers are opened
no
yes
yes
Is the motor
started up
no
Is malfunction
eliminated
yes
yes
yesno
yes
Is malfunction
eliminated
Tighten the screw; reassemble the blade, motor
and shaft bearing rubber base sub-assy to make
sure there is no foreign object between them
Replace the mainboard
with the same model.
Check if the connection of PG
motor feedback terminal is firm.
Check if the connection
of PG motor control
terminal is firm.
to see whether the blade rotates

40 Installation and Maintenance
Service Manual
Appearance of
the jumper cap
Troubleshooting for C5
malfunction
Is there jumper cap on the
mainboard ?
Is
the jumper cap inserted
correctly and
tightly ?
Replace the jumper cap
with the same model
End
yes
yes
Assemble the jumper
cap with the same
model
no
Is malfunction
eliminated
no
yes
Insert the
jumper cap
tightly
Is malfunction
eliminated
no
no yes
Is malfunction
eliminated
no
yes
Replace the mainboard
with the same model.
(3) Malfunction of Protection of Jumper Cap C5
Main detection points:
ƽ,VWKHUHMXPSHUFDSRQWKHPDLQERDUG"
ƽ,VWKHMXPSHUFDSLQVHUWHGFRUUHFWO\DQGWLJKWO\"
ƽ7KHMXPSHULVEURNHQ"
ƽ'HWHFWLRQFLUFXLWRIWKHPDLQERDUGLVGH¿QHGDEQRUPDO"
0DOIXQFWLRQGLDJQRVLVSURFHVV

41
Installation and Maintenance
Service Manual
(4) Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8
ain detection points:
ƽInstant energization afte de-energization while the capacitordischarges slowly?
ƽalfunction diagnosis process:
Troubleshooting
for U8 malfunction
Turn power off
for 1minute,the
turn back on
U8 is still
displayed
The unit returns to normal.
Conclusion:U8 is displayed due
to power off/on while the
capacitor discharges slowly.
The zero-cross detection
circuit of the mainboard is
defined abnormal.Replace
the mainboard with the same
model
End
No
Yes

42 Installation and Maintenance
Service Manual
(1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel)
0DLQ&KHFN3RLQWV
Ɣ8VH$&YROWPHWHUWRFKHFNLIWKHYROWDJHEHWZHHQWHUPLQDO/DQG1RQWKHZLULQJERDUGLVZLWKLQ9$&a9$&
Ɣ,VWKHUHDFWRU/FRUUHFWO\FRQQHFWHG",VWKHFRQQHFWLRQORRVHRUIDOOHQ",VWKHUHDFWRU/GDPDJHG"
)DXOWGLDJQRVLVSURFHVV
roubleshooting for
F1,F2 malfunction
Is
the wiring terminal between the
temperature sensor and the controller
loosened or poorly contacted?
Insert the temperature
sensor tightly
yes
Is malfunction
eliminated
Is there short circuit due to trip-over of
the parts?
Make the parts upright
yes
Is malfunction
eliminated
Replace the mainboard
with the same model.
End
no
no
Is the
temperature sensor normal according
to the Resistance
able?
no
Replace it with a
temperature sensor
with the same model
no
yes
yes
Is malfunction
removed
no
yes
yes
no
Outdoor Unit

43
Installation and Maintenance
Service Manual
(2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control
panel)
0DLQFKHFNSRLQWV
Ɣ,VWKHFRQQHFWLRQEHWZHHQFRQWUROSDQHO$3DQGFRPSUHVVRU&203VHFXUH"/RRVH",VWKHFRQQHFWLRQLQFRUUHFWRUGHU"
Ɣ,VWKHYROWDJHLQSXWRIWKHPDFKLQHZLWKLQQRUPDOUDQJH"8VH$&YROWPHWHUWRPHDVXUHWKHYROWDJHEHWZHHQWHUPLQDO/DQG1RQWKH
ZLULQJERDUG;7
Ɣ,VWKHFRPSUHVVRUFRLOUHVLVWDQFHQRUPDO",VWKHLQVXODWLRQRIFRPSUHVVRUFRLODJDLQVWWKHFRSSHUWXEHLQJRRGFRQGLWLRQ"
Ɣ,VWKHZRUNLQJORDGRIWKHPDFKLQHWRRKLJK",VWKHUDGLDWLRQJRRG"
,ƔVWKHFKDUJHYROXPHRIUHIULJHUDQWFRUUHFW"
)DXOWGLDJQRVLVSURFHVV
nergize and
switch on
IPM protection
occurs after the
machine has run for
a
p
eriod of time?
Use AC voltmeter
to measure the
voltage between
terminal L and N
on the wiring
board XT)
If the voltage
between terminal L
and N on wiring
board XT is within
210VAC~250VAC?
Check the supply
voltage and
restore it to
210VAC~250VAC
Voltage between
the two ends of celectrolytic
capacitor is
Restart the unit. Before
protection occurs,
use DC voltmeter to
measure the voltage
between the two
ends of electrolytic
capacitor on control
panel AP1
If the unit can
work
normally?
Please confirm:
1. If the indoor and
outdoor heat
exchangers are
dirty? If they are
obstructed by other
objects which affect
the heat exchange
of indoor and
outdoor unit.
2. If the indoor and
outdoor fans are
working normally?
3. If the environment
temperature is too
high, resulting in
that the system
pressure is too high
and exceeds the
permissible range?
4. If the charge
volume of
refrigerant is too
much, resulting in
that the system
pressure is too
high?
5. Other conditions
resulting in that the
system pressure
becomes too high.
The connection
of capacitor C2
is loose.
Reconnect the
capacitor C2 according
to lectrical Wiring
Diagram. Then,
Restart the
unit.
Stop the unit and
disconnect the power
supply. Wait 20 minutes,
or use DC voltmeter to
measure the voltage
between the two ends of
capacitor C2, until the
voltage is lower than 20V
Replace the capacitor
C2. Then, energize
and start the unit.
Replace the
control panel AP1
Take corrective actions
according to Technical
Service Manual, and
then energize and start
the unit.
If there is any
abnormality
described above?
Replace the
control panel AP1
If the connection
between AP1 and
COMP is unsecure
or the connection
order is wrong?
Connect the control panel
A
P1 and compressor
COMP correctly according
to the lectrical Wiring
Diagram. Then, energize
and start the unit.
Use ohmmeter to
measure the resistance
between the three
terminals on compressor
COMP, and compare the
measurements with the
compressor resistance on
Service Manual.
If the
resistance is
normal?
Use ohmmeter to
measure the resistance
between the two
terminals of compressor
COMP and copper tube.
Replace the
compressor
COMP
Resistance higher
than 500MΩ?
Replace the
control panel
AP1
ND
Y N
Y
N
Y
N
Y
If the unit can
work normallv? Y
If the unit can
work normally? Y
N
N
Y
N
If the unit can
work normally? Y
Y
NN
If the unit can
work
normally? Y
Y
N
Y
N
N
Y
higher than
250V
Remove the wires
on the two ends of
capacitor C2. Then,
use capacitance
meter to measure
the capacitor C2.
Verify as per the
Parameters Sheet.
Stop the unit and
disconnect the power
supply. Then, check
the connection of
capacitor C2
according to lectrical
Wiring Diagram.
If capacitor
C2 is failed?
Refer to the
lectrical Wiring
Diagram and check
if the connection
between AP1 and
COMP is loose and if
the connection order
is correct.

44 Installation and Maintenance
Service Manual
(3)High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor
unit)
Mainly detect:
Ɣ,VRXWGRRUDPELHQWWHPSHUDWXUHLQQRUPDOUDQJH"
Ɣ$UHWKHRXWGRRUDQGLQGRRUIDQVRSHUDWLQJQRUPDOO\"
Ɣ,VWKHKHDWGLVVLSDWLRQHQYLURQPHQWLQVLGHDQGRXWVLGHWKHXQLWJRRG"
)DXOWGLDJQRVLVSURFHVV
nd
Y
N
Y
N
Y
N
Overheat and high
temperature protection
Is outdoor ambient temperature higher than 53?
20 minutes after the complete
unit is powered off.
Is heat dissipation of the indoor unit
and outdoor unit abnormal?
Normal protection, please operate
it after the outdoor ambient temp-
erature is normalized.
Improve the heat
dissipation environ-
ment of the unit
Does the outdoor fan work normally?
1. Check if the fan terminal OFAN
is connected correctly
2. Resistance between any two
terminals is measure by an ohm
gauge and should be less than 1K
Ohm.
Replace the
control panel AP1
Replace the fan
capacitor C1
Replace the
outdoor fan

45
Installation and Maintenance
Service Manual
(4) Start-up failure (following AP1 for outdoor unit control board)
Mainly detect:
Ɣ:KHWKHUWKHFRPSUHVVRUZLULQJLVFRQQHFWHGFRUUHFW"
Ɣ,VFRPSUHVVRUEURNHQ"
Ɣ,VWLPHIRUFRPSUHVVRUVWRSSLQJHQRXJK"
)DXOWGLDJQRVLVSURFHVV
N
N
N
N
Power on the unit
Is stop time of the compressor
longer than 3 minutes?
Restart it up after
3 minutes
Does startup fail?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Connect the wires as
per the connection
diagram
Replace the control panel AP1
If the fault is eliminated?
Replace the
compressor
End

46 Installation and Maintenance
Service Manual
(5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit)
Mainly detect:
Ɣ,VWKHV\VWHPSUHVVXUHWRRKLJK"
Ɣ,VWKHLQSXWYROWDJHWRRORZ"
)DXOWGLDJQRVLVSURFHVV
Out of step occurs once the
unit is powered on.
Is stop time of the
compressor longer than
3 minutes?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Is the connection made in clockwise
direction?
Connect the
wires correctly
Replace the control
panel AP1
If the fault is eliminated?
Replace the
compressor
End
Out of step occurs in
operation
Is the outdoor fan working
normally?
Is the outdoor unit blocked
by foreign objects?
Replace the
control panel AP1
If the fault is eliminated?
Replace the
compressor
End
Check if the fan terminal
OFAN is connected correctly
Remove foreign objects
Replace the fan
capacitor C1
Replace the
outdoor fan

47
Installation and Maintenance
Service Manual
(6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board)
Mainly detect:
Ɣ,VWKH309FRQQHFWHGZHOORUQRW",V309GDPDJHG"
Ɣ,VUHIULJHUDQWOHDNHG"
)DXOWGLDJQRVLVSURFHVV
20 minutes after the
complete unit is
powered off
Is the terminal FA for the
electronic expansion valve
connected correctly?
Connect the
wires correctly
Resistances between the first four pins
close to the terminal hole and the fifth
pin are almost the same, less than 100
ohm.
Replace the electronic
expansion valve
If the fault is eliminated?
If the fault is eliminated?
Replace the
control panel
AP1
Coolant leakage, refilling
the coolant
End

48 Installation and Maintenance
Service Manual
(7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the
outdoor unit)
Mainly detect:
Ɣ&KHFNLIWKHUHDFWRU/RIWKHRXWGRRUXQLWDQGWKH3)&FDSDFLWRUDUHEURNHQ
)DXOWGLDJQRVLVSURFHVV
N
N
N
N
N
N
Start
Check wiring of the
reactor (L) of the
outdoor unit and the
PFC capacitor
Whether there is any
damage or
short-circuit?
Replace it as per the
wiring diagram and
reconnect the wires If the fault is eliminated?
Remove the PFC capacitor
and measure resistance
between the two terminals.
Is the resistance around zero?
The capacitor is
short circuited and
the capacitor
should be repla-
ced
Restart the unit If the fault is eliminated?
Disconnect the terminals for the
reactor and measure the resistance
between the two terminals of the
reactor by an ohm gauge
Whether there is any damage
or short-circuit? Replace the reactor Restart the unit If the fault is eliminated?
Replace the control
panel AP1
End