Hardware Model Specification
Mitsubishi Electric Ecodan PUZ-WZ85VAA Diagnostics
Classification: HVAC & Boilers Equipment
Hardware operational fault codes, protection alarms, LED blink sequences, and step-by-step diagnostic fixes for the Mitsubishi Electric Ecodan PUZ-WZ85VAA.
1 Documented Faults
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Full Multimeter & Safety Isolation Procedures
Indexed Fault Codes for Ecodan PUZ-WZ85VAA
Step-by-step resolution manuals and root cause matrices
CODE U6
Severity: Critical
Difficulty: Advanced
Compressor Overcurrent Trip
The outdoor unit inverter board detected an instantaneous current draw exceeding safety thresholds (typically >23A-28A peak) through the compressor power module (IPM), triggering an immediate protective shutdown to prevent catastrophic component failure.
⏱ 45-60 Mins
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