Samsung AM***MXWA Series Installation Manual

Contents

ENGLISH-7902 InstallIng the PrOductK2 (Number of press) KEY operation Display on segment1 time Refrigerant charging in Cooling mode K - 5 - BlAnK - BlAnK2 times Trial operation in Cooling mode K - 6 - BlAnK - BlAnK3 times Pump down all units in Cooling mode K - 7 - BlAnK - BlAnK4 times HR: Pipe connection inspectionH/P: Auto trial operation K - 8 - BlAnK - BlAnK5 times Checking the amount of refrigerantK - 9 - X - X(Display of last two digits may differ depending onthe status)6 times Discharge mode of DC link voltage K - A - BlAnK - BlAnK7 times Forced oil collection K - C - BlAnK - BlAnK8 times Inspect inverter compressor 1 K - D - BlAnK - BlAnK9 times Inspect inverter compressor 2 K - E - BlAnK - BlAnK10 times Water pipe valve/Pump check K - F - BlAnK - BlAnK11 times Cooling fan/Flow control valve check K - G - BlAnK - BlAnK12 timesA type PBA End key operation -B type PBA HR : Auto pipe pairing,H/P : Unused“K””H”XX(Display of last two digits may differdepending 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 off, it is dangerous when you come in contact with inverter PCB and fan PCB sincethey 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 theoutdoor 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, ‘Discharge mode of DC link voltage’ may not have been effective Especially if error E464 and E364have been occurred, power element might be damaged by fire and therefore, do not use the ‘Discharge mode of DC linkvoltage ’❋❋ If the 1st-generation MCU is installed, the Auto pipe pairing operation can not be usedIf 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 usedK3 (Number ofpress) KEY operation Display on segment1 time Intialize (Reset) setting Same as initial stateSetting outdoor unit option switch and key funtion