The Waratah AS666 Logrite Cab Module is a control hub used in forestry harvesting equipment, managing climate control, lighting, communications and safety interfaces within the operator cab. Common failure points on this class of industrial cabin modules include power‑distribution board faults (over‑current or shorted fuses), degraded relays or contactors for HVAC and lighting circuits, and corrupted firmware or lost communication links to the main controller. For initial troubleshooting, verify that the module receives its rated input voltage and check all fuse ratings; inspect relay contacts for pitting or burn marks; and review any diagnostic error codes or CAN‑bus logs for failed sub‑systems before proceeding with component replacement.[oss-gpt-20b]