Dc_Link Voltage Under/Over Error, Over Voltage Protection Error/Pfc Over Load - Samsung AC026MNJDKH/EU Service Manual

4-4-11 DC_link voltage under/over error, Over voltage protection error/PFC over load

1.Checklist :
1) Is the input voltage of outdoor terminal block is normal?
2) Is the reactor wire connected?
3) Is the reactor wire connected?
4) Is the DC_link capacitor(PF2:CE101,CE102,CE103,PF3:CE001,CE002,CE003,CE004)) assembled in accordance the specification? (Outdoor PBA)
5) Is the DC_link resistor(PF2:R104,R106,R107,R108,PF3:R004,R005,R006,R007) value is normal? (Outdoor PBA)
2. Troubleshooting procedure
Is the connected of reactor wire?
(PBA-Reactor)
Restart after power off.
Is the the input voltage is nomal?
Normal range(180Vac ~ 270Vac)
Restart after power off.
Start the operation (cooling mode or heating
mode)
Is the DC_link voltage (CE101 or CE001) is normal in operation
mode?
Normal range(280Vdc~320Vdc)
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
4-36
Yes
Yes
Yes
Yes
Yes
Yes
No
Connect the reactor wire
Check the input power in the powercord.
No
No
Check the input power
No
Exchange the Outdoor PBA
No
Exchange the Outdoor PBA
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