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Air conditioning stopped cooling / no response to AC button

Q: What are the symptoms of Air conditioning stopped cooling / no response to AC button in Dacia Logan MCV?

No cold air from vents. Irregular A/C operation

Q: How to fix Air conditioning stopped cooling / no response to AC button in Dacia Logan MCV?

Replacement of the electromagnetic clutch set (pressure disc and coil) on the air conditioning compressor without the need to suck out the gas and dismantle the compressor body from the vehicle.

in Dacia Logan MCV (2012-2018)

Symptoms

No cold air from vents
Irregular A/C operation

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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

II kompresor Valeo

Refrigerant: R1234yf Amount (g): 430g Oil: VC200YF PAO 68 AA1 lub PAG ISO 100 YF Oil (ml): 110ml

II kompresor Calsonic

Refrigerant: R134a Amount (g): 480g Oil: PAG 488 PAO 68 lub PAG ISO 150 Oil (ml): 150ml

II kompresor Valeo

Refrigerant: R134a Amount (g): 480g Oil: PAG 488 PAO 68 lub PAG ISO 150 Oil (ml): 95ml

See full specification

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