Exact model manual
Highest confidence for a model-specific code or procedure.
Verification hierarchy
How source quality is graded
Understand the evidence hierarchy used for appliance error codes, model compatibility and troubleshooting procedures.
Manufacturer code table
First-party support content for a product family or appliance category.
Manufacturer support root
Useful verification path, but not enough by itself to prove an exact code meaning.
Secondary reference
Research lead only until verified against a stronger source.
User report
Never promoted to verified status solely because a visitor submitted it.
Publishing rule
Indexable code pages should contain a code-specific first-party source wherever practical. Exact model compatibility requires an exact-model or clearly identified model-family source.