Samsung AM036NXMDCR - Troubleshooting Outdoor Unit Temperature Sensors

Samsung Electronics
85
Check Operation & Amount of Refriherant Automatically Checking
2) Outdoor Unit Temperature sensor
■ Inspection item : Outdoor temperature of each Outdoor Unit, Cond_Out, Suction, Liquid pipe temperature sensor
■ Error code: None (The resulting report "Undetermined")
■ Determine the status of the Temperature sensor of the each Outdoor Unit installed before the compressor start.
■ If the judgment of Outdoor Unit Temperature sensor is "Undetermined" : Checking in accordance with the following order.
[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.
Yes
Must wait more than 1 hour
No
Is deviations
of the Indoor Unit Temperature sensors, more
than 10℃?
No
No
Is Temperature sensor properly assembled?
Check the breakaway of sensor or replace PCB
Is Temperature
sensor connector properly connect?
Yes
Is Temperature sensor resistance value
normal.
Yes
Is deviations of the Indoor Unit Temperature
sensors, less than 10℃?
Complete
No
[Discharge
Temperature sensor
resistance value]
Temperature(℃)
Resistance(Ku)
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.
Confirmation and
Measures.
Confirmation
and Measures.
Replace sensor.