Dc-Link Voltage Under/Over Error - Samsung AR09FSSYAWTNEU Service Manual

12-2-15 DC-link voltage under/over error,H/W DC-link 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?
4) Is the DC_link capacitor(CE101,CE102,CE103) assembled in accordance the specification? (Outdoor PBA)
5) Is the DC_link resistor(R104,R106,R107,R108) value is normal? (Outdoor PBA) 5) Is the DC link resistor(R104,R106,R107,R108) value is normal? (Outdoor PBA)
2. Troubleshooting procedure
Is the connected of reactor wire? Is the connected of reactor wire? Is the connected of reactor wire? Is the connected of reactor wire? Is the connected of reactor wire?
(PBA-Reactor) (PBA-Reactor) (PBA-Reactor) (PBA-Reactor) (PBA-Reactor)
Restart Restart Restart Restart r power r power r power r power
Is the the input voltage is nomal? Is the the input voltage is nomal? Is the the input voltage is nomal? Is the the input voltage is nomal?
Normal range(180Vac ~ 270Vac) Normal range(180Vac ~ 270Vac) Normal range(180Vac ~ 270Vac) Normal range(180Vac ~ 270Vac)
Restart Restart Restart r power r power r power
Star he Star he Star he (cooling mode or (cooling mode or (cooling mode or
Is the DC_link voltage (CE101) is Is the DC_link voltage (CE101) is
Is the DC_link voltage (CE101) is
normal in normal in normal in
Normal range(280Vdc~320Vdc)
Is the DC_link sensing
voltage(R104) is normal in
Is the DC_link sensing voltage(R104) is normal in
mode? Normal range (0.2Vdc~2.8Vdc)
I th Is the reactor insula on damaged? t i l
Exchange the Reactor
Samsung Electronics
E466

DC-Link voltage under/over error

E484 PFC over load
E483 H/W DC-Link over
DC-Link voltage under/over error
PFC over load
H/W DC-Link over
YES YES YES YES YES
. . . .
YES YES YES YES
. . .
ng mode) ng mode) ng mode)
mode? mode? mode?
YES YES
mode?
YES YES
d d?
YES
NO NO NO NO NO
Connec he reactor wire Connec he reactor wire Connec he reactor wire Connec he reactor wire Connec he reactor wire
NO NO NO NO
Check the input power in the powercord. Check the input power in the powercord. Check the input power in the powercord. Check the input power in the powercord.
NO NO NO
Check the input power Check the input power Check the input power
NO NO
Exchange the Outdoor PBA Exchange the Outdoor PBA
NO NO
Exchange the Outdoor PBA E h th O td PBA
12-2-15