Samsung AM048FXMDCH - Communication Error on All PBA Within the Outdoor Unit C-Box, Communication Cable Error. (E-205)

36 Samsung Electronics
3-3. Communication error on all PBA within the outdoor unit C-Box,
communication cable error. (E-205)
Outdoor unit Display E-205
Indoor unit Display
Duct, Cassette (1 / 2Way), Console, Ceiling
Operation Defrost Timer Fan Filter / MPI
× ×
◑ ◑
×
Cassette (4Way / Mini 4Way)
Operation Defrost Timer Filter
×
◑
◑ ×
Duct, Cassette (1/2 Way), Console, Ceiling
Operation Timer Turbo 24°C 27°C
× ×
◑ ◑
×
※ ● : ON ◑ : Flash ×: OFF
Judgement Method t$PNNVOJDBUJPOFSSPSCFUXFFOUIF$#PY1$#
Cause of problem
t$PNNVOJDBUJPOXJSFJOTJEFUIF$#PYJTVODPOOFDUFE
t.BJO1$#EFGFDUJWF
Did the communication
connector break away
from the PCB?
Is inverter PCB CN32
and Fan PCB CN12
connector accurately
connected?
Is FAN PCB LD22, 32 ashes?
Replace main PCB.
Restart operation after connecting the inverter
PCB2 CN31(when the Comp. applied one :Inverter PCB1)
connector. (Check the 3, 4 Pin short)
* When performing the connector work, Pleaseturn off
the main power .
Check the Inverter PCB1 CN32, CN91 and Fan PCB
CN12 Communication wire / Connector .
* When performing the connector work, Please
turn off the main power.
Check the Main PCB : Main PCB TX circuit Inspection
* When performing the connector work, Please
turn o the main power
Yes
No
Yes
No
No