Samsung DVM S ECO BIG Series Service Manual page 68

Troubleshooting
■ Error on temperature sensor of double layer pipe/liquid pipe(sub heat exchanger)
(Short or open). (E-311)
Outdoor unit Display
Indoor unit Display
Judgement Method
Cause of problem
Did the connector for
the Liquid Pipe
Temperature sensor
break away from the
Separate the connector of the Liquid Pipe
Temperature sensor from the PCB and measure
the resistance value between the 2 terminals.
Did the resistance
value significantly stray
from the following
temperature table?
Restart operation after replace the PCB
4-26
Operation
◑
Operation
◑
Operation
◑
• Refer the next page
• Disconnection or breakdown of relevant sensor.
PCB?
Yes
Yes
E-311
Duct, Cassette (1 / 2Way), Console, Ceiling
Defrost Timer
×
×
Cassette (4Way / Mini 4Way)
Defrost Timer
◑
×
Duct, Cassette (1/2 Way), Console, Ceiling
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 liquid
pipe temperature sensor itself.
Temperature(°C)
70
60
50
40
30
20
10
0
-10
Fan Filter / MPI
◑
×
Filter
×
24°C 27°C
◑
×
Resistance(KΩ)
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
Samsung Electronics