Samsung EH035CAV Service Manual page 146

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 connec-
tion cable.
5 Check the Comp Wire.
6 Check the BLDC Fan.
(✳✳035✳✳)
Samsung Electronics
141 Kinderkamack Rd, Park Ridge, NJ 07656 Tel: 201-782-1782 Fax: 201-782-1783 Web: www.amgair.com Email: info@amgair.com
Inspection Method
1) Is C101(✳✳035✳✳), C103(✳✳052/070✳✳) dis-
charged?
2) Is the resistance of both terminals of
C101(✳✳035✳✳), C103(✳✳052/070✳✳) opened?
3) Is the fuse of EMI PCB normal?
4) Is the reactor wire connected?
1) Is R001 200ohm?
2) Does RY503(✳✳035✳✳), RY01(✳✳052/070✳✳)
operate normally?
✳✳035✳✳–(IC55 & 8: 0V, 4: 5V)
✳✳052/070✳✳–(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 C101(✳✳035✳✳), C103(✳✳052/
070✳✳) 250V over?
3) Is the input of IC19 8V, and the output 5V?
4) Recheck after disassembling BLDC FAN Wire
(✳✳035✳✳)
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?
1) Is CN01 1, 3 over 250V?
2) Is CN01 3, 5 within 1V~5V?
3) Is the voltage of CN01 6 changed?
4) Is the resistance of BLDC Motor 1, 3 opened after
power off?
Air Marketing Group LLC
Troubleshooting
Cause
• Over Current
• Inner short of PCB
• BLDC FAN Motor Error(✳✳035✳✳)
• Outdoor PCB Error
• Relay(RY503–✳✳035✳✳, RY01–✳✳052/
070✳✳) Error
• IC55 Error(✳✳035✳✳)
• IC72 Error(✳✳052/070✳✳)
• Inner short of outdoor PCB
• Wrong assembly of outdoor PCB
• BLDC FAN Error(✳✳035✳✳)
• Wrong connection of Indoor/Outdoor
wiring
• Wrong assembly of outdoor
communication circuit
• Wrong assembly
• Installation condition is bad.
• Outdoor PCB Error
• BLDC Motor Error
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