Samsung ASV18PULNXEA Service Manual page 82

DC_link voltage under/over error, Over voltage protection error/PFC over load
Indoor display ⊙
Outdoor display ○
1.Checklist :
1) Is the input voltage of outdoor terminal block is normal?
2) Is the input voltage is higher than 300Vac?
3) Is the reactor wire connected?
3) Is the DC_link capacitor(A*V18***:CE101,CE102,CE103,A*V24***:CE001,CE002,CE003,CE004)) assembled in accordance the specification? (Outdoor PBA)
4) Is the DC_link resistor(A*V18***:R104,R106,R107,R108,A*V24***:R004,R005,R006,R007) value is normal? (Outdoor PBA)
2. Troubleshooting procedure
Is the connected of reactor wire?
(PBA-Reactor)
YES
Restart after power off.
Is the the input voltage is nomal?
Normal range(180Vac ~ 270Vac)
YES
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)
YES
Is the DC_link sensing voltage(R104
or R004) is normal in operation
mode?
Normal range (0.2Vdc~2.8Vdc)
YES
Is the reactor insulation damaged?
YES
Exchange the Reactor
○ ⊙ Outdoor error
DC_link voltage under/over error
● ⊙ Over voltage protection error
PFC over load
NO
NO
NO
NO
NO
Connect the reactor wire
Check the input power in the powercord.
Check the input power
Exchange the Outdoor PBA
Exchange the Outdoor PBA
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