Troubleshooting
Samsung Electronics 4-29
&YUFSOBM4FOTPS&SSPS&SSPS$PEF&&&&
1. Test Item
1) Check the connection of the temperature sensor connector.
2) Check the resistance value of the temperature sensor.
2. Check procedure
Error Code Description
E221Error of the temperature sensor of the outdoor unit
E231Error of the COND. sensor of the outdoor unit
E251Error of the discharge sensor of the
outdoor unit
E320 Error of the OLP sensor of the outdoor unit
Power OFF
Is the temperature sensor connector
reconnected?
No
Yes
Yes
Replace the temperature sensor, ױ
Power ON. ױ
After confirming the state is normal, end the service.
No
Is the temperature
sensor-measuring resistance similar to the
table on the left?
After confirming the state is normal,
end the service.
No
Yes
Replace the outdoor unit PBA. ױ
Power is on. ױ After confirming the state is
normal, end the service.
(Example) COND. sensor/outdoor unit temperature sensor measuring resistance value by temperature: E231, E221
(Example) OLP sensor/discharge temperature sensor measuring resistance value by temperature: E320, E251.
Current
temperature
(°C)
Resistance
(KΩ)
Current
temperature
(°C)
Resistance
(KΩ)
70 4 20 10
60 5 10 20
50 6 0 30
407 -10 40
30 8
Current
temperature
(°C)
Resistance
(KΩ)
Current
temperature
(°C)
Resistance
(KΩ)
80 40 30 180
70 50 20 220
60 60 10 320
50 900550
40 110
Check the connection of CN43.
Is the temperature sensor connector
connected?
OLP sensor: 200k at 25ఁ
Discharge sensor: 200k at 25°C
Outdoor unit temperature sensor:
10k at 25°C
COND. sensor: 10k at 25°C
OLP sensor: 200k at 25°C
Discharge sensor: 200k at 25ఁ
COND. sensor: 10k at 25ఁ
Outdoor unit temperature sensor:
10k at 25ఁ
e.g.) Room temperature: 26ఁ
- Resistance: 10.28 KΩ
e.g.) Room temperature: 21ఁ
- Resistance: 205.4 KΩ
Does the same error occur again
after power is on?
[RC090/100/125/140/14566666,
AC666FCA666]
[RC090/100/125/140/14566666,
AC666FCA666]
[RC072DHXB6]
[RC072DHXB6]
Check the connection of
CN501 and CN502.
To Next Page
Loading...
Need help?
General
