70
Samsung Electronics
Check Operation & Amount of Refriherant Automatically Checking
1-2 How to troubleshoot of the "Undetermined"
1) Indoor Unit Temperature sensor
Ŷ
Inspection item : Indoor temperature of each Indoor Unit, EVA In / Out Temperature sensor
Ŷ
Error code: None (The resulting report "Undetermined")
Ŷ
Determine the status of the Temperature sensor of the Indoor Unit installed before the compressor start.
Ŷ
Commissioning methods
[Caution]
- If the Outdoor Unit with a history of operation (Automatic commissioning inclusion) : Must be carried out Automatic Commissioning after 1
hour from final operation stopped.
Blast operation for more than 10 minutes
Yes
Indoor Temperature
sensor setting(Remote
control
→
indoor unit)
No
Is deviations of the Indoor Unit Temperature
sensors, more than 10
℃
?
No
No
Is Indoor temperature of the Indoor Unit by
wired remote control setting?
Check the breakaway of sensor or replace PCB
Does Temperature sensor connection wire of
Outdoor Unit properly connect?
Yes
Is Outdoor Unit Temperature sensor
resistance value normal?
Yes
Is deviations of the Indoor Unit Temperature
sensors, less than 10
℃
?
Complete
Confirmation and
Measures
No
Replace sensor
[Discharge
Temperature sensor
resistance value]
Temperature(
℃)
Resistance(K
u
)
70
60
50
40
30
20
10
0
-10
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27.3
43.0
※
Resistance measurement method After
separating the Temperature sensor
connector from the PCB, measure the
resistance value between the two
terminals.
