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11.
TROUBLE SHOOTING
Table.11-1
NO. Type
Contents
The evaporator
sensor check point
Malfun-
1
is abnomal or
ction
room temp. sensor
is abnormal.
Indoor/outdoor
Malfun-
2
unit communica-
ction
tion is abnormal
Malfun-
Outdoor unit is
3
ction
abnormal
Malfun-
Water level switch
4
ction
is abnormal
5
Alarm Mode conflict
6
Alarm Fan Protection
Malfun-
EEPROM error
7
ction
8
Alarm No address
4 Way Compact Cassette Type Indoor Unit
LED Lamp
Remarks
flash
After the malfunctions
The run lamp
disappear, it restores
flashes fast
automatically.
The timer
After the malfunctions
lamp flashes
disappear, it restores
fast
automatically.
The alarm
After the malfunctions
lamp flashes
disappear, it restores
slowly
automatically.
The alarm
After the malfunctions
lamp flashes
disappear, it restores
fast
automatically.
When the indoor unit
The defrost
turns to heating mode
lamp flashes
or is turned off, the
fast
alarm will disappear.
The timer
After the malfunctions
lamp flashes
disappear, it restores
slowly
automatically.
After the malfunctions
Defrost LED
disappear, it restores
flash slowly
automatically.
Timer LED
and run
After the malfunctions
LED flash
disappear, it restores
togather
automatically.
12.
TEST OPERATION
■
The test operation must be carried out after the entire installation
has been completed.
■
Please confirm the following points before the test operation:
• The indoor unit and outdoor unit are installed properly.
• Pipework and wiring are correctly installed.
• The refrigerant pipe system is leakage-checked.
• The drainage is not blocked .
• The heating insulation works well.
• The ground wiring is connected correctly.
• The length of the refrigeration pipe work and the added capac-
ity of the refrigerant have been recorded.
• The power voltage fits the rated voltage of the air conditioner.
• There is no blockages at the outlet and inlet of the outdoor and
indoor and indoor units.
• The gas-side and liquid-side stop values are both opened.
• The air conditioner is pre-heated by turning on the power.
■
Test operation
Set the air conditioner under the mode of "COOLING"with
the remote controller, and check the following points per the
"Owner's Manual"If there is any malfunction, please resolve it as
per chapter "Troubles And Causes ".
• The indoor unit
Whether the switch on the remote controller works well.
Whether the buttons on the remote controller works well.
Whether the air flow louver moves normally.
Whether the room temperature is adjusted well.
Whether the indicator lights normally.
Whether the temporary buttons works well.
Whether the drainage is normal.
Whether there is vibration or abnormal noise during operation.
Whether the air conditioner heats well in the case of the HEAT-
ING/COOLING mode.
• The outdoor unit
Whether there is vibration or abnormal noise during operation.
Whether the generated wind, noise, or condensed of by the air
conditioner have influenced your neighborhood.
Whether any of the refrigerant is leaked.
Protection function will delay the startup of compressor for 3 min-
utes in case the unit is turned on immediately after power on or
restarted after shutdown.
TROUBLE SHOOTING | 13
CAUTION
6720874427 (2017/04)
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