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2004 Chevy express van, heater has no high speed, at one time the blower stayed on even when the ignoton was turned off therefor draining the battery,

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How do you increase fan speed?

You can increase fan speed by adjusting the settings in your device's system preferences or by using third-party software. Be cautious not to set the fan speed too high, as it can impact the lifespan of the fan and potentially create more noise.


Why does the heat blower only work on low and medium but not on high?

It could be due to a faulty resistor in the blower motor circuit. The resistor regulates the speed of the blower motor, and if it malfunctions, the high speed setting may not work properly. It would be best to have a mechanic inspect and replace the resistor if necessary.


Why does the blower fan only work on high speed?

The blower motor resistor module is ruined and need replacement. It can be found from below and behind the glove box. Tt may be hard to see, follow the wires to connection that is mounted to the blower unit by two small hex-head screws. I removed the glove box so I could access it easier than trying to go from the bottom in a confined position.


What is the fan speed for cooling in a central air system?

The fan speed for cooling in a central air system is typically set to high speed to help distribute cool air throughout the home efficiently. This helps to reach a desired temperature more quickly and effectively.


Why would a whole house fan only work on 1 speed?

A whole house fan that only works on one speed may have a faulty motor or a damaged speed control switch. It could also be a problem with the wiring or the fan's internal components. It would be best to have a professional electrician or HVAC technician inspect and repair the fan to ensure it operates correctly and safely.

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