Samsung AM***MXWA Series - K2 Key Operation Guide

ENGLISH-79
02 INSTALLING THE PRODUCT
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
HR: Pipe connection inspection
H/P: Auto trial operation
K - 8 - BLANK - BLANK
5 times Checking the amount of refrigerant
K - 9 - X - X
(Display of last two digits may dier depending on
the status)
6 times Discharge mode of DC link voltage K - A - BLANK - BLANK
7 times Forced oil collection K - C - BLANK - BLANK
8 times Inspect inverter compressor 1 K - D - BLANK - BLANK
9 times Inspect inverter compressor 2 K - E - BLANK - BLANK
10 times Water pipe valve/Pump check K - F - BLANK - BLANK
11 times Cooling fan/Flow control valve check K - G - BLANK - BLANK
12 times
A type PBA End key operation -
B type PBA
HR : Auto pipe pairing,
H/P : Unused
“K””H”XX
(Display of last two digits may dier
depending on the progress)
13 times B type PBA End key operation -
 During “Discharge mode of DC link voltage,” voltage of INV1 and INV2 will be displayed alternately.
 Even when the outdoor unit power is o, 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 o 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, ‘Discharge mode of DC link voltage’ may not have been eective. Especially if error E464 and E364
have been occurred, power element might be damaged by re and therefore, do not use the ‘Discharge mode of DC link
voltage.’
 If the 1st-generation MCU is installed, the Auto pipe pairing operation can not be used.
If the 2nd-generation MCU is installed, the Checking the pipe connection can not be used.
- 1st-generation MCU : MCU-S*NEE*N
- 2nd-generation MCU : MCU-S*NEK2N,MCU-S4NEK3N,MCU-S1NEK1N
 If there is an A type PBA among the outdoor units installed as a module, the Auto pipe pairing operation can not be used.
K3 (Number of
press)
KEY operation Display on segment
1 time Intialize (Reset) setting Same as initial state
Setting outdoor unit option switch and key funtion