Samsung UH052EAV, Service Manual

Page: 100 / 116

Samsung Electronics 12-19
12-3-4 Outdoor Detailed Inspection Procedure
No Procedure Inspection Method Cause
1 Wait 30 seconds over after
disconnecting the power
cable Check the outdoor
PCB. 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? • Over Current
• Inner short of PCB
2 Check the outdoor unit
PCB. 1) Is R001 200ohm?
2) Does RY01 operate normally?
(IC72 & 8: 0V, 4: 5V)
3) Is the fuse normal?
• Outdoor PCB Error
• Relay(RY01) Error
• IC72 Error
3 Check the LED lighting
after power supply. 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.
• Inner short of outdoor PCB
• Wrong assembly of outdoor PCB
4
Check the condition
of indoor & outdoor
connection cable. 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?
• Wrong connection of Indoor/Outdoor
wiring
•
Wrong assembly of outdoor
communication circuit
5 Check the Comp Wire. 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?
• Wrong assembly
• Installation condition is bad.
Troubleshooting
25890A(1)_1.indd 19 2006-04-14 ｿﾀﾈﾄ 2:23:58