Samsung DVM S ECO BIG Series Service Manual page 62

Troubleshooting
■ Error on discharge temperature sensor of compressor 1 (Short or open). (E-251)
Outdoor unit Display
Indoor unit Display
Judgement Method
Cause of problem
Did the Compressor
Discharge or t op
temperature sensor
connector break away
from the PCB?
After separating the Compressor Discharge or
Top Temperature sensor connector from the PCB,
measure the resistance value between the two terminals.
Did the resistance
value significantly stray
from the following
temperature table?
Restart operation after replace the PCB
4-20
Duct, Cassette (1 / 2Way), Console, Ceiling
Operation
×
Cassette (4Way / Mini 4Way)
Operation
×
Duct, Cassette (1/2 Way), Console, Ceiling
Operation
×
• Refer the next page
• Compressor Discharge or Top Temperature sensor defective. (Open/Short)
Yes
Yes
E-251
Defrost Timer
◑
×
Defrost Timer
◑
◑
Timer Turbo
◑
×
※ ● ◑
: ON : Flash ×: OFF
No
Restart operation after connecting the connector
to PCB
No
Replace this part as it is the defective of
the compressor discharge or top temperature
sensor itself.
Temperature(°C)
130
120
100
80
60
25
20
10
0
Fan Filter / MPI
◑
◑
Filter
◑
24°C 27°C
◑
◑
Resistance(KΩ)
8.9
11.2
18.5
32.0
59.0
200
242
362
553
Samsung Electronics