What are the symptoms of a faulty car air conditioning temperature control switch?

1 Answers
JosieDella
07/29/25 3:25pm
Symptoms of a faulty car air conditioning temperature control switch: 1. Intermittent cooling of the car air conditioning; 2. No cooling in the car air conditioning. The repair method involves identifying the leakage point, replacing the failed components, then performing vacuuming, pressure testing, and refilling the refrigerant according to the specified amount for the air conditioning system to resolve the issue. The temperature control switch regulates the fan operation. When the water temperature reaches around 88 degrees, the temperature control switch controls the fan to run at a low speed. At 100 degrees or above, the fan runs at high speed. The temperature control switch is usually installed on the radiator or near the water pipe leading to the engine cylinder head and has three wires. Only electronic temperature control switches have three wires: one is the negative terminal from the switch, one connects to the dryer bottle to protect the air conditioning system, and the other is the power supply.
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