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Unusual noise and metallic grinding when A/C is on

Q: What are the symptoms of Unusual noise and metallic grinding when A/C is on in Inna Zjawisko „Black Death”?

Different temperature on both sides of the cabin. Unusual noises when A/C is turned on. Dark sludge or metal shavings in system. Slow loss of refrigerant

Q: How to fix Unusual noise and metallic grinding when A/C is on in Inna Zjawisko „Black Death”?

A comprehensive replacement of many components is necessary. The installation of a new compressor itself ends with its immediate destruction due to residual filings. Proper repair includes replacement

in Inna Zjawisko „Black Death”

Symptoms

Different temperature on both sides of the cabin
Unusual noises when A/C is turned on
Dark sludge or metal shavings in system
Slow loss of refrigerant

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Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

Refrigerant specifications for this model are available in the catalog.

Open refrigerant database

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