Troubleshooting
Samsung Electronics 159
■ Action
■ Solution
- Change the wire to new one
• How to check the Comm. IC
Action Result
Check wiring to F1,F2 terminal block OK
Comm. IC check OK
Check ODU PBA setting OK
Check Other error occurrence OK
Wiring broken check NG – middle of the F1 wire was broken
■ Measurement Method
Measure the No.5- No.6 / No.5- No.7 / No.5- No.8 Pin resistance
■ Judgment
One or both of them is open
4-4-5 Case study – E201 (Communication error between indoor & outdoor unit) (cont.)
4-4 Case study for trouble shoots (cont.)
Outdoor Unit
Transmitter
communication
Indoor Unit communication
Outndoor Unit
communication
No.5
Display IC No. 1 Pin
No.6 No.7
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