87
ENGLISH
• After installing the product, be sure to perform leak tests on the piping connections . After pumping down
refrigerant to inspect or relocate the outdoor unit, be sure to stop the compressor and then remove the
connected pipes .
- Do not operate the compressor while a valve is open due to refrigerant leakage from a pipe or an unconnected
or incorrectly connected pipe . Failure to do so may cause air to flow into the compressor and too a high
pressure to develop inside the refrigerant circuit, leading to an explosion or product malfunction .
WARNING
K2 (Number of
press)
KEY operation
Display on segment
1 time
Refrigerant charging in Cooling mode
“K” “5” “BLANK” “BLANK”
2 times
Trial operation in Cooling mode
“K” “6” “BLANK” “BLANK”
3 times
Pump down all units in Cooling mode
“K” “7” “BLANK” “BLANK”
4 times
Trial operation in Cooling mode
“K” “8” “BLANK” “BLANK”
5 times
Checking the amount of refrigerant
“K” “9” X X (Display of last two digits may differ
depending on the progress)
6 times
Discharge mode of DC link voltage
“K” “A” “BLANK” “BLANK”
7 times
Unused
“K” “B” “BLANK” “BLANK”
8 times
Forced oil collection
“K” “C” “BLANK” “BLANK”
9 times
Inverter compressor 1 check
“K” “D” “BLANK” “BLANK”
10 times
Inverter compressor 2 check
“K” “E” “BLANK” “BLANK”
11 times
Fan 1 check
“K” “F” “BLANK” “BLANK”
12 times
Fan 2 check
“K” “G” “BLANK” “BLANK”
13 times
A type PBA
End key operation
-
B type PBA
Unused
“K” “H” X X
14 times
B type PBA
End key operation
-
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During "Discharge mode of DC link voltage", voltage of INV1 and INV2 will be displayed alternately .
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Even when the outdoor unit power is off, it is dangerous when you come in contact with inverter PCB and fan PCB since
they are charged with high DC voltage .
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When pressing K2 key 9 to 12 times without inverter checker, error code can be displayed on segment even though the
outdoor unit is normal .
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When replacing/repairing the PCB, cut-off the power and wait until the DC voltage is discharged before replacing/
repairing them . (Wait for more than 15 minutes to allow it to discharge naturally .)
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When there were error, 'Dicharge mode of DC link voltage' may not have been effective . Especialy if error E464 and E364
have been occured, power element might be damaged by fire and therefore, do not use the 'Discharge mode of DC link
voltage' .
K3 (Number of
press)
KEY operation
Display on segment
1 time
Intialize (Reset) setting
Same as initial state