Troubleshooting
Samsung Electronics
25
4-2 Service Operation
4-2-1 Special Operation
►
Key input of the outdoor unit when the service enters the operation mode.
K1 (Number of press)
Key operation
Display on segment
1 time
Refrigerant charging in Heating mode
K, 1, BLANK, BLANK
2 times
Trial operation in Heating mode
K, 2, BLANK, BLANK
3 times
Pump out in Heating mode (Outdoor unit address 1)
K, 3, BLANK, 1
4 times
Pump out in Heating mode (Outdoor unit address 2)
K, 3, BLANK, 2
5 times
Pump out in Heating mode (Outdoor unit address 3)
K, 3, BLANK, 3
6 times
Pump out in Heating mode (Outdoor unit address 4)
K, 3, BLANK, 4
7 times
Vacuumig (Outdoor unit address 1)
K, 4, BLANK, 1
8 times
Vacuumig (Outdoor unit address 2)
K, 4, BLANK, 2
9 times
Vacuumig (Outdoor unit address 3)
K, 4, BLANK, 3
10 times
Vacuumig (Outdoor unit address 4)
K, 4, BLANK, 4
11 times
Vacuuming (All outdoor units)
K, 4, BLANK, A
12 times
End Key operation
-
Press and hold 1 time
Auto trial operation
K, K, BLANK, BLANK
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 trail 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
End Key operation
-
※
Inv1 & Inv2 voltage during discharge mode are displayed alternately.
※
Outdoor Power Off even when the Inverter PCB, Fan PCB is a high DC voltage charging contacts at danger.
※
When you run the repair and replacement of the PCB should work after the power is turned off, the DC voltage discharge.
(Natural discharge until Please wait for at least 15 minutes.)
※
If an error occurs, the discharge mode may not work properly.
In particular, E464 & E364 is power devices can be damaged.
Therefore, the discharge mode, do not use.
