| Temp (°C) | LP (bar) | HP (bar) | Condition | FR: État | |-----------|----------|----------|-----------|-----------| | 25 | 2.2-2.8 | 13-18 | Normal | Normal | | 25 | 1.0-1.5 | 8-10 | Low charge | Sous-charge | | 25 | 3.5-4.5 | 10-13 | Bad comp. | Compresseur défectueux | | 25 | 1.0-1.2 | 22-28 | Blocked TXV | Détendeur bloqué |
AC systems are under high pressure. Always wear safety goggles and gloves. If you are unsure about the readings, consult a professional, as overcharging a system can cause the compressor to explode.
Le système de climatisation automobile est un élément essentiel pour le confort des passagers. Pour garantir son bon fonctionnement, il est important de surveiller les pressions du système. Voici un tableau récapitulatif des pressions normales pour un système de climatisation automobile : tableau pression climatisation automobile pdf
Possible moisture in the system or a restricted dryer. Steps for a Proper Diagnosis
The (French: tableau de pression de climatisation automobile ) is a diagnostic tool used to evaluate the operating status of a vehicle’s air conditioning system. It provides reference pressure values for the low-pressure (LP) and high-pressure (HP) sides of the A/C loop as a function of: | Temp (°C) | LP (bar) | HP
| Source | Type | Link / Search Term | |--------|------|--------------------| | Sanden | OEM compressor mfr | “Sanden pressure chart R134a” | | Denso | A/C systems | “Denso A/C diagnostic chart PDF” | | Honeywell | Refrigerant supplier | “Honeywell R1234yf pressure chart” | | A/C Europa (French) | Technical bulletins | “Tableau pression climatisation auto PDF gratuit” | | Automotive forums | DIY compilations | “Auto A/C pressure chart printable PDF” |
Le tableau de pression pour la climatisation automobile est un outil essentiel pour diagnostiquer l'état de santé de votre système HVAC. En comparant les relevés des manomètres (basse pression et haute pression) avec la température ambiante, vous pouvez identifier des pannes telles qu'une fuite de gaz, un compresseur fatigué ou un détendeur bloqué. Tableau de Pression R134a vs Température Ambiante If you are unsure about the readings, consult
The tableau pression climatisation automobile in PDF format is an essential field guide for any automotive HVAC technician. It enables rapid, accurate diagnosis of undercharge, overcharge, component failures, and refrigerant contamination. When used with a proper manifold gauge set and temperature probes, it eliminates guesswork and reduces repair time by 70% compared to trial-and-error methods.
exemple : $$P = \fracFA$$
| Function | Description | |----------|-------------| | | Compare measured pressures against expected values at given ambient temp | | Component fault diagnosis | Identify failed compressor, expansion valve, orifice tube, condenser, or evaporator | | Safety | Prevents overcharging (risk of burst hoses) or undercharging (poor cooling, compressor damage) | | Efficiency | Ensures optimal heat exchange and fuel economy |