This component controls fan speed This issue can also be caused by a faulty fuse, relay, or wiring within the hvac system If it fails, the system runs the blower motor on high only
Ac blower only works on high/ How to fix it - YouTube
Check the resistor and blower motor for issues, as both may need replacement to maintain proper performance
To troubleshoot this issue, first, inspect the vehicle’s fuse related to the blower.
Another thing to think about is if the blower resistor keeps failing repeatedly All the current for the blower motor goes through the resistor If the blower motor starts to get shorted/ partially shorted then it draws more and more current (amps) to perform the same amount of work. Does your blower motor/fan only run on high speed.or not at all
In this video, we talk about the cause and effect that leads to blower motor resistor failure. The blower on my 2016 trax works fine on speeds 1, 2, and 3, but stops completely whenever 4 (high) is selected I found a wiring diagram online If it's correct, the three lower speeds go through the resistor (from the forums i've read, apparently a common failure) but the highest speed doesn't.
Does your air conditioner only work on high
This common issue means the part that controls fan speed is likely broken It usually points to a fault in the blower motor resistor or, in newer systems, a blower motor control module This problem means the fan speed selector switch cannot tell the fan to run slower, so it defaults to the highest setting where it gets full power, or the part that. A loose blower motor connection or faulty blower motor relay could cause your heat and ac to intermittently work on the highest setting
How do i fix my heat and ac if it only works on high? When a blower motor only works on high speed, it usually indicates a problem with the blower motor resistor, which controls the fan speeds
