Troubleshooting Guide
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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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1. NOISE occurs
2. CNU defect
3. Temporary error of Timing mismatch
4. A/C product defect
Error
No.
Error Type
Error Point
Main Reasons
Received check sum is differ-
ent from calculated check
sum data
Central controller
Check sum Error
250
1. NOISE occurs
2. CNU defect
3. Temporary error of Timing mismatch
4. A/C product defect
Error
No.
Error Type
Error Point
Main Reasons
Length of received data : 0
Central controller
Receive Zero Error
251
1. NOISE occurs
2. CNU defect
3. Temporary error of Timing mismatch
4. A/C product defect
Error
No.
Error Type
Error Point
Main Reasons
Setting address and actual
address are different each
other
Central controller
Wrong Address Error
252
■
Error diagnosis and countermeasure flow chart
1) Check system setting address of central controller and actual address is matched or not
2) Re-start service program(engine) of central controller
3) Replace CNU
Summary of Contents for ARNU07GB1G1
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