Samsung DVM S ECO BIG Series Service Manual page 58

Troubleshooting
■ Communication error on all PBA within the outdoor unit C-Box, communication cable error.
(E-205)
Outdoor unit Display
Indoor unit Display
Judgement Method
Cause of problem
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
flashes?
Replace main PCB
4-16
Duct, Cassette (1 / 2Way), Console, Ceiling
Operation
×
Cassette (4Way / Mini 4Way)
Operation
×
Duct, Cassette (1/2 Way), Console, Ceiling
Operation
×
• Communication error between the C-Box PCB.
• Communication wire inside the C-Box is unconnected.
• Main PCB defective.
Yes
Yes
E-205
Defrost Timer
◑
×
Defrost Timer
◑
◑
Timer Turbo
◑
×
※ ● ◑
: ON : Flash ×: OFF
Restart operation after connecting the inverter
PCB2 CN31(when the Comp. applied one :
No
Inverter PCB1) connector. (Check the 3, 4 Pin short)
* When performing the connector work, Please
turn off the main power .
Check the Inverter PCB1 CN32, CN91 and Fan
No
PCB CN12 Communication wire / Connector .
* When performing the connector work, Please
turn off the main power.
Check the Main PCB : Main PCB TX circuit
No
Inspection
* When performing the connector work, Please
turn off the main power.
Fan Filter / MPI
◑
×
Filter
×
24°C 27°C
◑
×
Samsung Electronics