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No cooling (total) and errors / Flashing air conditioning panel (Climatronic)

Q: What are the symptoms of No cooling (total) and errors / Flashing air conditioning panel (Climatronic) in Renault Modus?

No cold air from vents. A/C does not react to control panel settings

Q: How to fix No cooling (total) and errors / Flashing air conditioning panel (Climatronic) in Renault Modus?

Unclogging the drains, regenerating the UPC module PCB or replacing it.

in Renault Modus (2002-2012)

Symptoms

No cold air from vents
A/C does not react to control panel settings

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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

Standard

Refrigerant: R134a Amount (g): 510g Oil: SP 10 PAO 68 lub PAG ISO 46 Oil (ml): 135ml

See full specification

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