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Why is there no air coming out from the central air vent of the Corolla?

1 Answers

VonSarah

07/29/25 5:55pm

The reasons for no air coming out from the air conditioner are a clogged air filter or a damaged blower. Below are the relevant explanations regarding the air conditioner not blowing hot air: 1. Reasons for the air conditioner not blowing hot air: (1) When the air conditioner is heating in winter, there is a preheating stage after startup. The outdoor unit starts working first, and the indoor unit begins to blow air only after the temperature of the indoor pipes starts to rise. This is because the air conditioner has a cold air prevention function. (2) Another possibility is that during the initial period after startup, the outdoor unit may have frost buildup and needs defrosting. During this stage, the indoor unit does not operate. Defrosting usually takes about 10 minutes, and hot air will only be blown out after defrosting is completed. (3) If it is an issue with the air conditioner, it means the heating-related components are not functioning properly due to damage or malfunction. 2. Solutions for the air conditioner not blowing hot air: (1) If there is no hot air within the first 10 minutes after turning on the air conditioner, wait for a while and check again if air starts coming out. (2) Check if the fan wheel is stuck. If the fan wheel rotates freely, inspect the indoor temperature sensor and pipe temperature sensor, as the heating process involves a cold air discharge phase. (3) If there is an issue with the heating components of the air conditioner, it cannot be resolved by non-professionals. Therefore, it is necessary to call an air conditioner repair technician. Repairs are free during the warranty period, but if the warranty has expired, you will need to pay for the repairs yourself.

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