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Thermostatic switches can also be used as a means of protecting electrical devices. For instance, the circuit board, or motherboard, of a computer has many elements in it that generate an amount of heat that could very easily damage the circuit, rendering the computer useless.What temp to have my electric fans come on?
Most fans should come on when the coolant reaches about 200 to 230 degrees. If the fan does not come on, something in the control circuit is defective. Additionally, what are the symptoms of a faulty cooling fan switch?What does a fan relay switch do?
The fan relay provides power via a switch, and sends 12-volts to the cooling fan which starts the operation. After the engine reaches a certain temperature, the cooling fan is turned off. If the cooling fan relay is going bad, it can continue to run even when the ignition is off, or when the engine is cold.What is a fan cycle switch?
Fan cycle controls are used in low ambient conditions to keep head pressure up. If it's 20 degrees outside you would not want your condenser fan to run all the time, The switch has whats called cut in/cut out setpoints, good example is 250 psi cut in, 175 psi cut out. This would give you fan on 250 fan off 175.