4-40 Samsung Electronics
4-4-10 DC_link voltage sensor error
1.Checklist :
1) Is the input voltage of outdoor terminal block is normal?
2) Is the reactor wire connected?
3) Is the DC_link capacitor(PF2:CE101,CE102,CE103,PF3:CE001,CE002,CE003,CE004)) assembled in accordance the specification?
(Outdoor PBA)
4) Is the DC_link resistor(PF2:R104,R106,R107,R108,PF3:R004,R005,R006,R007) value is normal? (Outdoor PBA)
2. Troubleshooting procedure
Connect the reactor wire
No
Is the connected of reactor wire?
(PBA-Reactor)
Is the DC_link voltage (CE101 or CE001) is
normal in operation mode?
Normal range(280Vdc~320Vdc)
Check the power input
No
No
No
No
Exchange the Outdoor PBA
Exchange the Outdoor PBA
Is the DC_link sensing voltage(R104 or R004) is normal in
operation mode?
Normal range (0.2Vdc~2.8Vdc)
Is the reactor insulation damaged?
Exchange the Reactor
Restart after power off.
Start the operation (cooling mode or heating
mode)
Yes
Yes
Yes
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