Samsung FH070EAV Service Manual page 100

12-3-4 Outdoor Detailed Inspection Procedure
No Procedure
1
Wait 30 seconds over after
disconnecting the power
cable Check the outdoor
PCB.
2
Check the outdoor unit
PCB.
3 Check the LED lighting
after power supply.
4 Check the condition
of indoor & outdoor
connection cable.
5
Check the Comp Wire.
Samsung Electronics
Inspection Method
1) Is C103 discharged?
2) Is the resistance of both terminals of C103 opened?
3) Is the fuse of EMI PCB normal?
4) Is the reactor wire connected?
1) Is R001 200ohm?
2) Does RY01 operate normally?
(IC72 & 8: 0V, 4: 5V)
3) Is the fuse normal?
1) Normal: Red: Light On, Green: Flickering, Yellow:
Light Off?
2) Is the voltage of C103 250V over?
3) Is the input of IC19 8V, and the output 5V?
4) Recheck after disassembling BLDC FAN Wire.
1) Is the green LED light on once per second?
2) Is the indoor & outdoor connection cable connected
in order?
3) Is the grounding wire connected to the both of
indoor & outdoor unit?
1) Is it connected red, blue, and yellow in order in
counter clockwise.
2) Are the valve and its installation condition good?
3) Is the installation condition of outdoor unit?
Cause
•
Over Current
•
Inner short of PCB
• Outdoor PCB Error
•
Relay(RY01) Error
•
IC72 Error
•
Inner short of outdoor PCB
•
Wrong assembly of outdoor PCB
•
Wrong connection of Indoor/Outdoor
wiring
•
Wrong assembly of outdoor
communication circuit
•
Wrong assembly
•
Installation condition is bad.
Troubleshooting
12-19