Why does my blower only work on high?
Resistor module replacement Most car manufacturers use a series of resistors to make the heater blower motor run at different speeds. And when one or more of these resistors burn out, you’re usually left with only one heater blower motor speed—high. The resistor module is easy and inexpensive to replace.
Why is my blower fan not working?
If you see or hear the fan turn on, your blower motor is not the culprit. If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip). While your thermostat may be at fault, only an HVAC technician can diagnose and remedy the issue correctly.
How can I tell if my blower motor is bad?
Here are just a few of the signs that your blower motor is going bad.
- Weak airflow. This is one of the first signs of a bad blower motor that people tend to notice.
- Noises. Have you noticed any unusual noises coming from your vehicle’s HVAC system?
- Smoke or smells.
How much does it cost to replace a blower resistor?
Blower Motor Resistor Replacement Cost – RepairPal Estimate. Labor costs are estimated between $44 and $55 while parts are priced between $64 and $82. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
What happens when your air conditioner fan stops working?
One of the most common reasons fans stop spinning is because of a dead capacitor. Each air conditioning system has several capacitors, including the start capacitor, which sends signals to the motor, and the run capacitor, which keeps the motor running. Capacitors can go bad over time and need to be replaced.
How much should it cost to replace a blower motor?
Replacing a blower motor costs $450 on average with a typical range of $250 to $800. With a warranty, you might pay as little as $150 for labor alone. For high-end models, like those with large motors or access issues, you might pay as much as $2,000.
How long does a blower motor last?
10 to 20 years
The blower motor in your home or office should last anywhere from 10 to 20 years. Modern sealed bearings and sealed bushings can push the lifespan to its maximum of 20 years. Proper cleaning and maintenance can also extend your unit’s lifespan.
What causes a blower fan to not work?
When this happens, you may notice that you will not feel anything blowing out of the vents at all. This may also cause the blower motor to work intermittently. A blower fan is connected to the negative battery terminal (also called ground) on one end and to the positive battery terminal through a blower motor resistor on the other end.
Why is my blower not working in Hi ( 5 )?
The usual failure of the resistor pack is if it works in HI (5) but not in any other mode or just a few modes. When you switch to high,the blower motor relay coil circuit is grounded and voltage is now applied directly through the relay to the blower motor; bypassing the resistors. So, I would look to see if the relay is ok.
Why is the resistor not working on my blower?
Hi There, The resistor is what controls the speed of the blower motor, not the relay. The blower motor relay supplies power to this motor when you turn the switch to “on” that can sometimes fail. When this happens, you may notice that you will not feel anything blowing out of the vents at all.
What should I do if my blower stops working?
Click to expand… Easy thing to do is unplug the Blower motor and check for power and ground when the switch is on. If so you need a motor (which is probably the problem). No need to check fuses and such if you have power at the motor (with switch on ofcourse) Take off, eh! that nicely cuts to the chase, & is what I should have done.