Sunlight Supply Samsung Programmable Thermostat for Split Systems - Manual (Page 84)

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 Ɵon 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 Ɵonmode?
Normal range(280Vdc~320Vdc)
Check the input power
NO
YES
YES
Connect the reactor wire
NO
Restart a Ōer power oī.
Is the the input voltage is nomal?
Normal range(180Vac ~ 270Vac)
Restart a Ōer power oī.
Start the opera Ɵon (cooling mode or heaƟng mode)
Check the input power in the powercord.
NO
YES
Exchange the Reactor
Is the reactor insula Ɵon damaged?
NO
Exchange the Outdoor PBA
YES