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70
Installation and Maintenance
Service Manual
No.
0DOIXQFWLRQ
Name
'LVSOD\0HWKRGRI,QGRRU8QLW
'LVSOD\0HWKRGRI2XWGRRU
Unit
$&VWDWXV 3RVVLEOH&DXVHV
'XDO
Code
Display
,QGLFDWRU'LVSOD\GXULQJ
EOLQNLQJ21VDQG2))
0.5s)
,QGLFDWRUKDVNLQGVRI
GLVSOD\VWDWXVDQGGXULQJ
EOLQNLQJ21VDQG2))
0.5s
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
11
*DWKHULQJ
refrigerant
Fo
:KHQWKHRXWGRRUXQLWUHFHLYH
VLJQDORI*DWKHULQJUHIULJHUDQW
WKHV\VWHPZLOOEHIRUFHGWR
UXQXQGHUFRROLQJPRGHIRU
JDWKHULQJUHIULJHUDQW
Nominal cooling mode
12
Indoor
ambient
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
F1
'XULQJFRROLQJDQGGU\LQJ
RSHUDWLRQLQGRRUXQLWRSHUDWHV
ZKLOHRWKHUORDGVZLOOVWRS
GXULQJKHDWLQJRSHUDWLRQ
WKHFRPSOHWHXQLWZLOOVWRS
operation.
1. Loosening or bad contact of
indoor ambient temp. sensor and
mainboard terminal.
2. Components in mainboard fell
GRZQOHDGVVKRUWFLUFXLW
3. Indoor ambient temp. sensor
GDPDJHGFKHFNZLWKVHQVRU
UHVLVWDQFHYDOXHFKDUW
4. Mainboard damaged.
13
Indoor
HYDSRUDWRU
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
F2
AC stops operation once
UHDFKHVWKHVHWWLQJ
WHPSHUDWXUH&RROLQJGU\LQJ
internal fan motor stops
RSHUDWLRQZKLOHRWKHUORDGV
VWRSRSHUDWLRQKHDWLQJ$&
stop operation
1. Loosening or bad contact of
Indoor
HYDSRUDWRUWHPSVHQVRUDQG
mainboard terminal.
&RPSRQHQWVRQWKHPDLQERDUG
fall
GRZQOHDGVVKRUWFLUFXLW
,QGRRUHYDSRUDWRUWHPSVHQVRU
GDPDJHGFKHFNWHPSVHQVRU
YDOXH
FKDUWIRUWHVWLQJ
4. Mainboard damaged.
14
2XWGRRU
ambient
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
F3
OFF 3S
and
EOLQN
6 times
'XULQJFRROLQJDQGGU\LQJ
RSHUDWLQJFRPSUHVVRUVWRSV
ZKLOHLQGRRUIDQRSHUDWHV
'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
15
2XWGRRU
condenser
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
F4
OFF 3S
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
F5
OFF 3S
and
EOLQN
7 times
'XULQJFRROLQJDQGGU\LQJ
RSHUDWLRQFRPSUHVVRUZLOOVRS
DIWHURSHUDWLQJ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
F6
OFF 3S
and
EOLQN
3 times
$OOORDGVRSHUDWHQRUPDOO\

ZKLOH
RSHUDWLRQIUHTXHQF\IRU
compressor is decreased
5HIHUWRWKHPDOIXQFWLRQDQDO\VLV
RYHUORDGKLJKWHPSHUDWXUH
resistant)
18
Decrease
IUHTXHQF\
GXHWR
RYHUFXUUHQW
F8
OFF 3S
and
EOLQN
once
$OOORDGVRSHUDWHQRUPDOO\
ZKLOH
RSHUDWLRQIUHTXHQF\IRU
compressor is decreased
7KHLQSXWVXSSO\YROWDJHLVWRRORZ
6\VWHPSUHVVXUHLVWRRKLJKDQG
RYHUORDG