Samsung AM080 XV Series - 9-1-3 How to troubleshoot of the Undetermined

Test Operation
9-4 Samsung Electronics
9-1-3 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 If the judgment of Indoor Unit temperature sensor is "Undetermined" : Checking in accordance with the following order.
[Caution]
- If the Outdoor Unit with a history of operation (Auto Trial Operation inclusion) :
Must be carried out Auto Trial Operation after 1 hour from final operation stopped.
- If the Indoor temperature setting by wired remote control :
Carried out the Auto Trial Operation after setting the Temperature sensor of Indoor Unit.
- Indoor Unit of outdoor air introduction : Will be excluded from the Indoor air temperature, EVA In / Out Temperature sensor checking.
No
Indoor Temperature
sensor setting
(Remote control → indoor unit)
Yes
Confirmation and Measures
No
Does Temperature sensor
connection wire of Outdoor Unit properly connect?
Yes
Replace sensor
No
Is Outdoor Unit
Temperature sensor resistance value normal?
Check the breakaway
of sensor or replace PCB
Blast operation for more than 10 minutes
Complete
Is deviations of the
Indoor Unit Temperature sensors, more than 10℃?
Is deviations of the Indoor Unit
Temperature sensors, less than 10℃?
Yes
Yes
Yes
Is Indoor temperature of
the Indoor Unit by wired remote control setting?
No
[Discharge
Temperature sensor
resistance value]
Temperature(℃)
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(K)
※ Resistance measurement method After
separating the Temperature sensor connector
from the PCB, measure the resistance value
between the two terminals.