Samsung Electronics
4-35
4-4-12 DC_link voltage sensor error
1.Checklist :
1) Is the PFC Shunt(PF2:R062,R063,PF3:R807,R808,R809) resistance value correct? Check the resistor is opened
2) Is the condition of surrounding temperature abnormal overload?
3) Is there any problem as like the temperature sensor separation or measurement value error?
4) Is the interphase resistance of compressor normal?
2. Troubleshooting procedure
Restart after returning to the normal load
No
Yes
Is the condition of indoor/outdoor
temperature normal load?
Is the I_trip error
occurred again?
Terminate the service
No
No
No
No
Correct the sensor position or exchange the
sensor
Correct the cable connection
Is the position of temperature sensor and the sensing value
normal?
Is the connection cable for the compressor and
power terminal normal?
Exchange the Outdoor PBA
Restart after power off.
Yes
Yes
Yes
