Samsung AQ09VFUAGM/CV, Service Manual

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DC_link voltage under/over error, Over voltage protection error/PFC over load
Indoor display
ሱ ل ሱ
Outdoor error
Outdoor display ل م ሱ
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 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)
Is the DC_link sensing voltage(R104
or R004) is normal in opera
Ɵ
on mode?
Normal range (0.2Vdc~2.8Vdc)
YES
Exchange the Outdoor PBA
NO
Is the DC_link voltage (CE101 or
CE001) is normal in opera Ɵ on mode?
Normal range(280Vdc~320Vdc)
Check the input power
NO
YES
YES
Connect the reactor wire
NO
Restart a Ō er power o ī .
Is the the input voltage is nomal?
Normal range(180Vac ~ 270Vac)
Restart a Ō er power o ī .
Start the opera
Ɵ
on (cooling mode or hea
Ɵ
ng mode)
Check the input power in the powercord.
NO
YES
Exchange the Reactor
Is the reactor insula
Ɵ
on damaged?
NO
Exchange the Outdoor PBA
YES