Samsung AQ09VFUAGM/CV Service Manual page 83

DC_link voltage sensor error
Indoor display
Outdoor display
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(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 a er power o .
Start the opera on (cooling mode or hea ng mode)
Is the DC_link voltage (CE101 or
CE001) is normal in opera on mode?
Normal range(280Vdc~320Vdc)
YES
Is the DC_link sensing voltage(R 104
or R004) is normal in opera onmode?
Normal range (0. 2 Vdc~2.8Vdc)
YES
Is the reactor insula on damaged?
YES
Exchange the Reactor
12-1 6
Outdoor error
DC_link voltage sensor error
NO
NO
NO
NO
Connect the reactor wire
Check the power input
Exchange the Outdoor PBA
Exchange the Outdoor PBA