4-2 Samsung Electronics
4-2 Service Operation
4-2-1 Special Operation
ـ 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 pr ess) 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: Au
tomatic 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 -
ఐ Inv1 & Inv2 voltage during discharge mode are displayed alternately.
ఐOutdoor Power Off even when the Inverter PCB, Fan PCB is a high DC voltage charging contacts at danger .
ఐ
When you run the r epair and replacement of the PCB should work after the po wer is turned off , the DC voltage dischar ge.
(Natural discharge until Please wait for at least 15 minutes.)
ఐIf an error occurs, the discharge mode ma y not
work properly.
In particular , E464 & E364 is power devices can be damaged.
Therefor e, the discharge mode, do not use.
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