39
Installation and Maintenance
Service Manual
No.
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Name
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Unit
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Code
Display
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0.5s)
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0.5s
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
11
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refrigerant
)R
2))6
DQGEOLQN
1 times
2))6
DQGEOLQN
1 times
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VLJQDORI*DWKHULQJUHIULJHUDQW
WKHV\VWHPZLOOEHIRUFHGWR
UXQXQGHUFRROLQJPRGHIRU
JDWKHULQJUHIULJHUDQW
Nominal cooling mode
12
Indoor
ambient
WHPSHUDWXUH
sensor is
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FLUFXLWHG
)
2))6
DQGEOLQN
once
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RSHUDWLRQLQGRRUXQLWRSHUDWHV
ZKLOHRWKHUORDGVZLOOVWRS
GXULQJKHDWLQJRSHUDWLRQ
WKHFRPSOHWHXQLWZLOOVWRS
operation.
1. Loosening or bad contact of
indoor ambient temp. sensor and
mainboard terminal.
2. Components in mainboard fell
GRZQOHDGVVKRUWFLUFXLW
3. Indoor ambient temp. sensor
GDPDJHGFKHFNZLWKVHQVRU
UHVLVWDQFHYDOXHFKDUW
4. Mainboard damaged.
13
Indoor
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WHPSHUDWXUH
sensor is
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FLUFXLWHG
)
2))6
DQGEOLQN
twice
AC stops operation once
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WHPSHUDWXUH&RROLQJGU\LQJ
internal fan motor stops
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VWRSRSHUDWLRQKHDWLQJ$&
stop operation
1. Loosening or bad contact of
Indoor
HYDSRUDWRUWHPSVHQVRUDQG
mainboard terminal.
&RPSRQHQWVRQWKHPDLQERDUG
fall
GRZQOHDGVVKRUWFLUFXLW
,QGRRUHYDSRUDWRUWHPSVHQVRU
GDPDJHGFKHFNWHPSVHQVRU
YDOXH
FKDUWIRUWHVWLQJ
4. Mainboard damaged.
14
2XWGRRU
ambient
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
2))6
DQGEOLQN
3 times
2))6
and
EOLQN
6 times
'XULQJFRROLQJDQGGU\LQJ
operating, compressor stops
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'XULQJKHDWLQJRSHUDWLRQ
WKHFRPSOHWHXQLWZLOOVWRS
operation
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KDVQWEHHQFRQQHFWHGZHOORU
LVGDPDJHG3OHDVHFKHFNLWE\
UHIHUULQJWRWKHUHVLVWDQFHWDEOHIRU
WHPSHUDWXUHVHQVRU
15
2XWGRRU
condenser
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
2))6
DQGEOLQN
4 times
2))6
and
EOLQN
5 times
'XULQJFRROLQJDQGGU\LQJ
operation, compressor stops
ZKLOHLQGRRUIDQZLOORSHUDWH
'XULQJKHDWLQJRSHUDWLRQ
WKHFRPSOHWHXQLWZLOOVWRS
operation.
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KDVQWEHHQFRQQHFWHGZHOORU
LVGDPDJHG3OHDVHFKHFNLWE\
UHIHUULQJWRWKHUHVLVWDQFHWDEOHIRU
WHPSHUDWXUHVHQVRU
16
2XWGRRU
GLVFKDUJH
WHPSHUDWXUH
sensor is
RSHQVKRUW
FLUFXLWHG
)
2))6
DQGEOLQN
5 times
2))6
and
EOLQN
7 times
'XULQJFRROLQJDQGGU\LQJ
operation, compressor will sop
DIWHURSHUDWLQJIRUDERXW
mins,
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'XULQJKHDWLQJRSHUDWLRQWKH
FRPSOHWHXQLWZLOOVWRSDIWHU
RSHUDWLQJIRUDERXWPLQV
2XWGRRUWHPSHUDWXUHVHQVRU
KDVQWEHHQFRQQHFWHGZHOORULV
GDPDJHG3OHDVHFKHFNLWE\
UHIHUULQJWRWKHUHVLVWDQFHWDEOHIRU
WHPSHUDWXUHVHQVRU
7KHKHDGRIWHPSHUDWXUHVHQVRU
KDVQWEHHQLQVHUWHGLQWRWKHFRSSHU
WXEH
17
Limit/
decrease
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GXHWR
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)
2))6
DQGEOLQN
for 6
times
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and
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3 times
All loads operate normally,
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RSHUDWLRQIUHTXHQF\IRU
compressor is decreased
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RYHUORDGKLJKWHPSHUDWXUH
resistant)
18
Decrease
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GXHWR
RYHUFXUUHQW
)
2))6
DQGEOLQN
8 times
2))6
and
EOLQN
once
All loads operate normally,
ZKLOH
RSHUDWLRQIUHTXHQF\IRU
compressor is decreased
7KHLQSXWVXSSO\YROWDJHLVWRRORZ
6\VWHPSUHVVXUHLVWRRKLJKDQG
RYHUORDG
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