What are the symptoms of a faulty air conditioning thermostat switch?

[VonMelanie]

When the air conditioning thermostat is faulty, it may display error codes or have indicator lights flashing or staying constantly lit. Another symptom is that the compressor may not operate when adjusting to a temperature with a significant difference from the indoor temperature, indicating a problem with the thermostat. Here are the details: 1. A faulty air conditioning thermostat may exhibit the following symptoms: the air conditioning panel may display error codes, or the status light may flash or stay constantly lit as a warning, indicating that the air conditioning system cannot operate normally. 2. You can try turning on the air conditioning, switching it to cooling mode, and setting it to the lowest temperature of 16℃. Wait for about 10 minutes to see if the compressor starts. Alternatively, adjust the air conditioning temperature to a value significantly different from the outdoor temperature and check if the compressor can be activated. 3. After the compressor starts, adjust the temperature to a higher setting and observe whether the compressor stops. If the compressor does not start or stop as expected, it indicates a problem with the thermostat.