102
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
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”
13 times
A type PBA
End key operation
B type PBA
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
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
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-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' .
❇
❇
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
❇
❇
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
Initialize (Reset) setting
Same as initial state
Setting outdoor unit option switch and key function
DVM S HE_IM_DB68-05461A-08_EN.indd 102
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Summary of Contents for AM080JXVHGH/EU
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