Samsung Electronics
4-19
4-19
4-3-7 Outdoor unit is not powered on – Initial diagnosis
1. Check items
1) Is the power supply voltage 220V?
2) Is the AC power connected correctly?
3) Are the LEDs in the main PCB and inverter PCB of the outdoor unit ON?
4) Is the input power voltage of the indoor unit 220V?
5) Is the wired remote controller connected correctly?
2. Check procedure
Yes
Turn off the main power switch
(circuit break of power outlet) and turn on
again after 30 seconds.
Check the input power
No
Is the outdoor unit power
supply (L-N) 220V?
Yes
Check the connection of the terminal block
No
Is the outdoor unit power
voltage (L-N) 220V?
Yes
Replace the inverter PBA
No
Is the voltage between
the terminal 2 (~) and 4 (~) of the
bridge diode 220V?
Yes
Replace the fuse
No
Is the fuse connected?
Yes
Replace the inverter PBA
No
Is the resistance value of R001 200Ω?
Cont.
