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 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 -
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.
ఐWhen 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.)
ఐIf 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.
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