The "W" in PWM is for "Width". The reason this is important is in explaining how PWM works; Consider an imaginary PWM that operates at a frequency of 1/60 Hz -- 1 cycle per 60 seconds, i.e., 1 cycle per minute. When the PWM is set for a 10% duty cycle, it means that it is on for 10% of the cycle and off for 90%.
The most common causes for AC fan blower motor not working in Honda CR-V are blown fuse, bad relay, resistor or control module malfunction and faulty blower motor. However, a bad electrical connector or broken wire, or a defect in the climate control unit can also cause the blower motor to stop working. 1. Blown fuse.
Symptoms Of A Bad Blower Motor Resistor. When the blower motor resistor goes bad, the motor can get stuck at one speed. The various airflow settings may also fail to work or you may not get any air from the vents. Furthermore, it can cause an inconsistent or intermittent fan speed, leaving you without proper airflow.
E46 Blower ResistorAs the HVAC system ages, so does the blower motor. If you have to replace the blower motor, check the year of the AC unit to see if you need to replace the whole system instead. Two Types of Blower Motors. Single Speed-goes at one speed and full capacity; Variable speed– operates at a low or high speed and creates an even temperature
3 signs of a faulty blower motor resisitor. In this video I explain all the common symptoms of a bad blower motor resistor. If the fan speed is stuck on low, BTmkd.