Samsung AM036FXMDCH Service Manual page 57

1-2 How to troubleshoot of the "Undetermined"
1) Indoor Unit Temperature sensor
Inspection item : Indoor temperature of each Indoor Unit, EVA In / Out Temperature sensor
Error code: None (The resulting report "Undetermined")
Determine the status of the Temperature sensor of the Indoor Unit installed before the compressor start.
Commissioning methods
Blast operation for more than 10 minutes
Is deviations of the Indoor Unit Temperature
sensors, more than 10 ?
Is Indoor temperature of the Indoor Unit by wired remote
control setting?
Does Temperature sensor connection wire of
Outdoor Unit properly connect?
Is Outdoor Unit Temperature sensor resistance
value normal?
Check the breakaway of sensor or replace PCB
Is deviations of the Indoor Unit Temperature
sensors, less than 10 ?
Complete
[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.
Samsung Electronics
Yes
No
Yes
Yes
Check Operation & Amount of Refriherant Automatically Checking
Indoor Temperature
No
sensor setting(Remote
control indoor unit)
No
Confirmation and
Measures
No
Replace sensor
Resistance measurement method After
separating the Temperature sensor connector
from the PCB, measure the resistance value
between the two terminals.
[Discharge
Temperature sensor
Resistance(Ku)
resistance value]
Temperature(
70 2.2
60 3.0
50 4.2
40 5.8
30 8.3
20 12. 1
10 18.0
0 27.3
-10 43.0
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