Apprentice refrigeration technician struggles to diagnose a multi-split system fault where wiring and refrigerant piping may be mismatched, causing inconsistent operation and high-pressure protection.

Workarounds Described

• Uses continuity test to identify wires but cannot map pipes
• Runs SW871 auto-correction function on outdoor unit but it fails with high-pressure error
• Considers dismantling trunking or opening circuit to visually trace pipes but avoids due to cost/time

Implied Software Gaps

• Non-invasive pipe mapping tool using sensor data
• Diagnostic assistant that interprets fault codes and guides root cause analysis
• Simulation of system behavior under different load conditions to pinpoint inconsistent unit
• EEV testing procedure without manual disassembly

RefriTrace Diagnostics

RefriTrace Diagnostics is a mobile app and sensor kit that uses non-invasive acoustic and thermal signature analysis to map refrigerant lines to specific indoor units in multi-split systems. It eliminates guesswork and dismantling, helping technicians rapidly verify wiring-to-piping correspondence and diagnose EEV or communication faults.