Samsung Electronics 68
Troubleshooting
غAM080/100/120/200FXWANR*, AM300KXWANR* / AM072/096/120/192HXWAF(J)R*,
AM240KXWAF(J)R*(cont.)
4-2 Service Operation (cont.)
4-2-1 Special Operation (cont.)
K2 (Number of press) Key operation Display on segment
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 dier
depending on the progress)
13 times B type PBA End key operation -
ఐ During “Discharge mode of DC link voltage,” voltage of INV1 and INV2 will be displayed alternately.
ఐ 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.
ఐ 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.
ఐ 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.)
ఐ When there were error, ‘Discharge mode of DC link voltage’ may not have been effective. Especially if error E464 and E364 have
been occurred, power element might be damaged by fire and therefore, do not use the ‘Discharge mode of DC link voltage.’
ఐ 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
ఐ If there is an A type PBA among the outdoor units installed as a module, the Auto pipe pairing operation can not be used.
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