Suction Temperature Sensor Error (Open/Short) - Samsung AM072BXV Series Service Manual

Troubleshooting
4-3 Appropriate Measures for Different Symptom (cont.)
4-3-25

Suction Temperature sensor error (Open/Short)

Outdoor unit
display
Duct, Cassette (1/2 Way),Console, Celing
Operation Defrost
Indoorunit
display
×
※ ● : ON ◑ : Flash ×: OFF
Judgment
•
Detect according to temperature detected with the suction #1 pipe temperature thermistor.
Method
Cause of
•
Disconnection or breakdown of relevant sensor. (More than 4.5V or 0.5V less than)
problem
1. Cause of problem
Outdoor unit suction
sensor connector (CN44) connected
to PBA?
Separate the connector of the Outdoor Suction
sensor from the PBA and measure the resistance
valuebetween the 2 terminals.
Is the resistor value matching with
"NOTE1" table?
Restart operation after replace the PBA.
Samsung Electronics
Timer Fan Filter/MPI Operation Defrost
× ◑ ◑ ◑
Yes
Yes
Cassette (4/Mini4 Way)
Timer
× ◑ ◑
No
Restart operation after connecting
the connector to PBA
Resistance value measure part
SUCT
CN44 (1, 2)
No
Replace this part as it is the defective of the
Outdoor Suction sensor itself.
Wall-mounted (NeoForte)
Filter Operation Timer
◑ ● ◑
NOTE1
Temperature(°C) Resistance(KΩ)
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
Turbo
◑
SUCT
106