
Troubleshooting
Samsung Electronics
141
غ͑
How to proceed
K2 (Number of press)
KEY operation
Display on 7-Segment
1times
Refrigerant charging in Cooling mode
K - 5 - BLANK - BLANK
2times
Trial operation in Cooling mode
K - 6 - BLANK - BLANK
3times
Pump down all units in Cooling mode
K - 7 - BLANK - BLANK
4times
HR: Pipe connection inspection
H/P: Auto trial operation
K - 8 - BLANK - BLANK
5times
Checking the amount of refrigerant
K - 9 - X - X
(Display of last two digits may differ
depending on the status)
6times
Discharge mode of DC link voltage
K - A - BLANK - BLANK
7times
Forced oil collection
K - C - BLANK - BLANK
8times
Inspect inverter compressor 1
K - D - BLANK - BLANK
9times
Inspect inverter compressor 2
K - E - BLANK - BLANK
10times
Water pipe valve/Pump check
K - F - BLANK - BLANK
11times
Cooling fan/Flow control valve check
K - G - BLANK - BLANK
12times
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 differ
depending on the progress)
13times
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
- 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.
4-4 Case study for trouble shoots
(cont.)
4-4-1 Electric discharge mode
(cont.)
Содержание AM038KXWDCH
Страница 147: ...Samsung Electronics 144 Troubleshooting 4 4 2 Pump down operation cont 4 4 Case study for trouble shoots cont ...
Страница 149: ...Samsung Electronics 146 Troubleshooting 4 4 3 Pump out operation cont 4 4 Case study for trouble shoots cont ...
Страница 168: ...Samsung Electronics 165 5 PBA Diagram and Parts List 5 1 ASS Y PBA MAIN Ŷ Push buttons Type ...
Страница 170: ...PBA Diagram and Parts List Samsung Electronics 167 5 1 ASS Y PBA MAIN cont Ŷ DIP S W Type ...
Страница 172: ...PBA Diagram and Parts List Samsung Electronics 169 5 2 ASS Y PBA MAIN HUB Ŷ AC ...
Страница 174: ...PBA Diagram and Parts List Samsung Electronics 171 5 2 ASS Y PBA MAIN HUB cont Ŷ DC ...
Страница 178: ...PBA Diagram and Parts List Samsung Electronics 175 5 3 ASSY PBA INVERTER cont Model AM300KXWANR AM240KXWAF J R ...
Страница 181: ...PBA Diagram and Parts List Samsung Electronics 178 5 4 ASS Y PBA EMI cont Model AM300KXWANR AM240KXWAF J R ...