Why does the Tiida make strange noises when the air conditioning is turned on?
2 Answers
Air conditioning noises include internal noises within the air conditioning system and external noises from the system. Below are possible causes of air conditioning noises: Internal noises: Internal noises are generally caused by air or moisture in the refrigerant of the system, which produces noise when the refrigerant evaporates and expands. Users may perceive the sound as coming from inside the dashboard. External noises are typically from the air conditioning compressor, and the sound can be felt near the compressor. Such noises are usually caused by air and moisture mixed into the refrigerant. Compressor noises: If the noise persists after recharging the refrigerant and is located near the compressor, there is a high probability of internal mechanical damage to the compressor. If the noise recurs after some time and is located inside the dashboard, it is more likely due to reduced efficiency of the dryer bottle.
I've handled quite a few cases of abnormal noises in the Tiida's air conditioning system, which is a fairly common issue. If there's a squeaking sound as soon as the compressor starts, it's mostly due to worn-out bearings, and it becomes more noticeable when the cold air is on. A loose belt slipping can also produce this kind of sharp friction noise, which disappears once tightened. If there's a gurgling sound like boiling water, it's the refrigerant not flowing smoothly in the pipes, possibly due to a dented pipe or a clogged condenser. A worn-out blower bearing will produce a humming noise, which gets louder with higher fan speeds. My suggestion is to follow this troubleshooting sequence: listen for the source of the noise, compare the changes when switching between cold and hot air, and then check the blower and filter condition. It's best to have a mechanic use a stethoscope to pinpoint the exact source of the noise—these minor issues are generally easy to fix.
