Samsung AM MXVAFC Series Installation Manual page 87

• 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
WARNING
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 .
K2 (Number of
press)
1 time
2 times
3 times
4 times
5 times
6 times
7 times
8 times
9 times
10 times
11 times
12 times
13 times
14 times
❋ ❋ During "Discharge mode of DC link voltage", voltage of INV1 and INV2 will be displayed alternately .
❋ ❋ 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 .
❋ ❋ 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 .
❋ ❋ 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 . )
❋ ❋ 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)
1 time
KEY operation
Refrigerant charging in Cooling mode
Trial operation in Cooling mode
Pump down all units in Cooling mode
Trial operation in Cooling mode
Checking the amount of refrigerant
Discharge mode of DC link voltage
Unused
Forced oil collection
Inverter compressor 1 check
Inverter compressor 2 check
Fan 1 check
Fan 2 check
A type PBA End key operation
B type PBA
B type PBA End key operation
KEY operation
Intialize (Reset) setting
"K" "9" X X (Display of last two digits may differ
Unused
Display on segment
"K" "5" "BLANK" "BLANK"
"K" "6" "BLANK" "BLANK"
"K" "7" "BLANK" "BLANK"
"K" "8" "BLANK" "BLANK"
depending on the progress)
"K" "A" "BLANK" "BLANK"
"K" "B" "BLANK" "BLANK"
"K" "C" "BLANK" "BLANK"
"K" "D" "BLANK" "BLANK"
"K" "E" "BLANK" "BLANK"
"K" "F" "BLANK" "BLANK"
"K" "G" "BLANK" "BLANK"
-
"K" "H" X X
-
Display on segment
Same as initial state
87