There are multiple causes as to this condition. There may be a bad switch that is stuck on the high position. The motor itself can have a problem being regulated correctly, for example also.
light out on the seat heater switch on passenger side. High low indicator is ok. How do you replace bulb?
The heater motor speed resister is burned out.
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,
The blower motor speed resistor is burned out.
The stock engine on a Honda City Express moped is 49cc. Speed can be increased by using high grade gasoline.
The blower motor speed resistor is burned out. The high speed function bypasses the resistor. The speed resistor is generally located near to the blower motor.
Yes there is, but it only operates the high speed function.
The blower motor speed resistor is burned out.
Switch problem? Cables disconnected?
It is safer and improve handling while driving in higher speed.
The Honda Prelude does not have a governor or speed limiter. It is only limited by drag at high speeds.
It is the resistor, replace it.