Troubleshooting
4-12 Samsung Electronics
4-2-5. Suction Temperature sensor error (Open/Short) - (E308)
1.
Cause of problem
Outdoor unit display
Judgment Method • Detect according to temperature detected with the suction #1 pipe temperature thermistor.
Cause of problem • Disconnection or breakdown of relevant sensor. (More than 4.5V or 0.5V less than)
NOTE1
Farenheit
(°F)
Resistance
(KΩ)
158
140
122
104
86
68
50
32
14
2.2
3.0
4.2
5.8
8.3
12.1
18.0
27. 3
43.0
Restart operation after replace the PBA.
Restart operation after connecting
the connector to PBA
Replace this part as it is the defective of the
Outdoor Suction sensor itself.
No
No
Yes
Outdoor unit suction
sensor connector (CN404) connected
to PBA?
Yes
Is the resistor value matching with
“NOTE1” table?
Separate the connector of the Outdoor Suction
sensor from the PBA and measure the resistance
valuebetween the 2 terminals.
Resistance value measure part
SUCT
CN404 (7, 8)
SUCT
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