Gree GWH18MC-K3NNA2K/I - Page 40

37
Installation and Maintenance
Service Manual
Possible Causes 'LVFULPLQDWLQJ0HWKRG$LUFRQGLWLRQHU6WDWXV 7URXEOHVKRRWLQJ
Set temperature is improper 2EVHUYHWKHVHWWHPSHUDWXUHRQUHPRWHFRQWUROOHU$GMXVWWKHVHWWHPSHUDWXUH
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motor is set too low
Small wind blow 6HWWKHIDQVSHHGDWKLJKRUPHGLXP
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Installation position for indoor unit
and outdoor unit is improper
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according to installation requirement for air
conditioner
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rainproof and sunproof for outdoor unit
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range
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Add refrigerant.
Malfunction of 4-way valve EORZFROGZLQGGXULQJKHDWLQJ 5HSODFHWKHZD\YDOYH
Malfunction of capillary
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Flow volume of valve is
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0DOIXQFWLRQRIKRUL]RQWDOORXYHU Horizontal louver can’t swing
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details
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PHWKRGLQGHWDLOV
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details
Malfunction of compressor Compressor can't operate
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details
9.3 Maintenance Method for Normal Malfunction
1. Air Conditioner Can't be Started Up
2. Poor Cooling (Heating) for Air Conditioner
3. Horizontal Louver Can't Swing
Possible Causes 'LVFULPLQDWLQJ0HWKRG$LUFRQGLWLRQHU6WDWXV 7URXEOHVKRRWLQJ
No power supply, or poor
connection for power plug
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DQGWKHEX]]HUFDQWJLYHRXWVRXQG
&RQ¿UPZKHWKHULWVGXHWRSRZHUIDLOXUH,I\HV
ZDLWIRUSRZHUUHFRYHU\,IQRWFKHFNSRZHU
VXSSO\FLUFXLWDQGPDNHVXUHWKHSRZHUSOXJLV
connected well.
Wrong wire connection between
indoor unit and outdoor unit,
or poor connection for wiring
terminals
Under normal power supply circumstances,
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once
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reliably
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correctly
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improper
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Malfunction of remote controller
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Replace batteries for remote controller
Repair or replace remote controller
Possible Causes 'LVFULPLQDWLQJ0HWKRG$LUFRQGLWLRQHU6WDWXV 7URXEOHVKRRWLQJ
Wrong wire connection, or poor
connection
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diagram
Connect wires according to wiring diagram to
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¿UPO\
Stepping motor is damaged Stepping motor can't operate Repair or replace stepping motor
Main board is damaged
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can't operate
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