54
Setting outdoor unit option switch and key function
English
Installation Procedure
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”
ߥϩʪϑ Pump down all units in Cooling mode “K” “7” “BLANK” “BLANK”
4 times
H/R: Checking the pipe connection
H/P: Automatic setting of operation mode (Cooling/Heating)
for trial operation
“K” “8” “BLANK” “BLANK”
5 times Checking the amount of refrigerant
“K” “9” X X (Display of last two digits may differ depending on
the progress)
6 times Discharge mode of DC link voltage “K” “A” “BLANK” “BLANK”
7 times Forced defrost operation “K” “B” “BLANK” “BLANK”
8 times Forced oil collection “K” “C” “BLANK” “BLANK”
9 times Inverter compressor 1 check “K” “D” “BLANK” “BLANK”
10 times Inverter compressor 2 check “K” “E” “BLANK” “BLANK”
11 times Fan 1 check “K” “F” “BLANK” “BLANK”
12 times Fan 2 check “K” “G” “BLANK” “BLANK”
ߣߥϩʪϑ
H/R : Auto pipe pairing
H/P : Unused
“K” “H” X X (Display of last two digits may differ depending on
the progress)
14 times Baseheater testing mode “K” “I” “BLANK” “BLANK”
15 times Unused “K” “J” “BLANK” “BLANK”
16 times End Key operation -
࢜ 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 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 E364 have been
occurred, power element might be damaged by fire and therefore, do not use the ‘Discharge mode of DC link voltage’.
࢜ During “Discharge mode of DC link voltage”, voltage of INV1 and INV2 will be displayed alternately.
࢜ If the voltage does not drop during ‘Discharge mode of DC link voltage’, please cut-off the power and wait for 15 minutes until voltage
discharges naturally. Due to the characteristics of the inverter PCB, ‘Discharge mode of DC link voltage’ may not be supported.
࢜ 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.
࢜ If error have been occurred, do not use the key operation.
࢜ 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, MCU-S2NEK1N
– 2nd-generation MCU : MCU-S*NEK2N, MCU-S4NEK3N, MCU-S1NEK1N
࢜ KEY operation of K2 15 times(Automatic refrigerant charging fuction) is an unused function.
It can be available with Automatic refrigerant charging option KIT.
çߥ࣑ĘЇɵʪθͱ˙Χθʪϑϑ࣒ KEY operation Display on segment
1 time Initialize (Reset) setting Same as initial state
K4 (Number of press) KEY operation
Display on segment
SEG 1 Ɗkߤࡥߥࡥߦ
1 time Capacity of Outdoor unit Model 1 ࣑ɇ࣒AɇΧɇʀϩцĮ˙˙ࡥߣࡥߨ
2 times Order frequency of the compressor 1 2 ߣߤߢ²іߣࡥߤࡥߢ
ߥϩʪϑ Order frequency of the compressor 2 3 ߣߤߢ²іߣࡥߤࡥߢ
4 times High pressure (MPa) 4 ߣߧߤđťɇߣࡥߧࡥߤ
5 times Low pressure (MPa) 5 ߢߦߥđťɇߢࡥߦࡥߥ
6 times Discharge temperature (Compressor 1) 6 ߪߩঌAߢࡥߪࡥߩ
7 times Discharge temperature (Compressor 2) 7 ߪߩঌAߢࡥߪࡥߩ
8 times IPM temperature (Compressor 1) 8 ߪߩঌAߢࡥߪࡥߩ
9 times IPM temperature (Compressor 2) 9 ߪߩঌAߢࡥߪࡥߩ
10 times CT sensor value (Compressor 1) A ߤߢࡥߤࡥߢ
11 times CT sensor value (Compressor 2) B ߤߢࡥߤࡥߢ
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