What are the reasons for the lack of cooling in the Chery Arrizo 5 air conditioning system?
2 Answers
Chery Arrizo 5 air conditioning system may fail to cool due to the following reasons: 1. Compressor capacitor damage or malfunction: This can cause the compressor to stop working. 2. Room temperature sensor resistance value change: This leads to the outdoor unit not working (the symptom is similar to the air conditioner shutting down after reaching the set temperature). 3. Damage to the indoor or outdoor fan (often due to capacitor failure): Failure of the outdoor fan manifests as excessively high exhaust temperature or high-pressure protection, while failure of the indoor fan results in frost formation on the indoor unit, continuous operation of the outdoor unit, and condensation on the indoor unit. 4. Other factors: Issues such as low power supply voltage reducing the electromagnetic clutch's pull force, or oil contamination between the clutch pressure plate and pulley, can cause a "slipping" phenomenon similar to a loose drive belt. If the evaporator surface frosts over or the blower motor speed decreases, it can also lead to insufficient cooling. Additionally, compressor wear or valve leakage can result in inadequate cooling performance. 5. Refrigeration system issues: Common faults like insufficient cooling or reduced cooling efficiency are often caused by refrigeration system sealing problems. Modern automotive refrigerants have strong permeability, requiring high system sealing standards. Even minor leaks in refrigeration pipelines or valves can cause insufficient cooling.
Last time I encountered an issue with the air conditioning not cooling, I tinkered with it for a long time before realizing it was due to insufficient refrigerant. After driving the car for four or five years, it's normal for the refrigerant to slowly leak out. You can basically confirm this by feeling the low-pressure AC pipe—if it's not cool to the touch. You should also check the AC compressor. Start the car and turn on the AC, then listen for a click sound when the compressor engages. If there's no sound, the electromagnetic clutch might be broken. Don’t forget to inspect the condenser—if the front grille is clogged with dead bugs or willow catkins, it can block heat dissipation. Also, don’t underestimate the small cabin air filter; if it’s too dirty, airflow will be weak, let alone cooling. The most troublesome issue is a refrigerant leak in the system, which requires using fluorescent dye to slowly locate the leak. For this kind of problem, it’s best to just take it to a repair shop to avoid wasting time trying to fix it yourself.
