Samsung DVM S ECO BIG Series Service Manual page 44

Troubleshooting
■ K1 button function
K1 Control
Press and hold 1 time
K1 (Number of press)
1 time
2 times
3 times
4 times
5 times
(Note 1) Not available on AM***FXM**C Series
• E ven when the outdoor unit power is off, it is dangerous when you come in contact with inverter PCB since it is charged with high
DC voltage.
• W hen 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.)
• W hen there were error, 'Discharge mode of DC link voltage' may not have been effective. Especially if error E464 has been occurred,
power element might be damaged by fire and therefore, do not use the 'Discharge mode of DC link voltage' .
• D uring "Discharge mode of DC link voltage", voltage of INV will be displayed.
■ K2 button function
K2
(Number of press)
1 time
2 times
3 times
4 times
5 times
(Display of last two digits may differ
depending on the progress)
6 times
7 times
8 times
9 times
10 times
11 times
12 times
4-2
KEY operation
Auto trial operation
KEY operation
Refrigerant charging in Heating mode
(Note 1)
Trial operation in Heating mode (Note 1)
Pump out in Heating mode (Note 1)
Vacuuming
End Key operation
KEY operation
Refrigerant charging in cooling mode
Trial operation in cooling mode
Pump down in cooling mode
Automatic setting of operation mode
(Cooling/Heating) for trial operation
Checking the amount of refrigerant
End Key operation
Discharge mode of DC link voltage
Forced defrost operation (Note 1)
Forced oil collection
Inverter compressor check
Fan 1 check
Fan 2 check
End key operation
Display on segment
"K" "K" "BLANK" "BLANK"
Display on segment
"K" "1" "BLANK" "BLANK"
"K" "2" "BLANK" "BLANK"
"K" "3" "BLANK" "1"
"K" "4" "BLANK" "1"
-
Display on segment
"K" "5" "BLANK" "BLANK"
"K" "6" "BLANK" "BLANK"
"K" "7" "BLANK" "BLANK"
"K" "8" "BLANK" "BLANK"
"K" "9" XX
-
"K" "A" "BLANK" "BLANK"
"K" "B" "BLANK" "BLANK"
"K" "C" "BLANK" "BLANK"
"K" "D" "BLANK" "BLANK"
"K" "E" "BLANK" "BLANK"
"K" "F" "BLANK" "BLANK
-
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