Why does my blower fan not keep working?
There’s a switch or something located under the blower fan that goes bad, and not all the fan speeds will keep working. Like on mine, the lowest fan speed no longer works, but the rest do. That’s the blower resistor.
What happens when the blower motor switch stops working?
When this happens, one or several of the blower fan speeds stop working. The cool thing is that diagnosing/troubleshooting the blower switch isn’t hard. The following circuit descriptions will help:
What to do if your fan switch stops working?
The circuit breaker can be reset using a narrow screwdriver or pin. You may need to remove it to do this. If that doesn’t solve it. check the circuit breaker for continuity after resetting it to see if it’s defective. If this fails, check if the AC compressor comes on when you have the AC button on and the fan switch on.
What happens when the lowest fan speed stops working?
Like on mine, the lowest fan speed no longer works, but the rest do. That’s the blower resistor. When that goes bad the highest speed will still work because the current goes directly to the blower motor, not through the resistor.
Why does my fan blower not come on?
If it does not come on then you might have a control board fan relay that is not sending 120 volts to the blower motor or a bad blower motor winding. You might try to change wires (speeds) on the blower motor to see if that fixes the problem.
What happens when the blower motor switch goes bad?
Since the blower motor switch is the direct control for the blower motor speed, when it malfunctions or has any problems it can affect the functionality of the entire AC system and should be serviced.
How to test the blower fan control switch?
This is good and is the correct and expected test result that tells you that the blower fan switch (in the A/C-Heater control panel) is OK. Your next step is to bypass the blower resistor using a simple jumper wire. For this test go to: TEST 2: Using A Jumper Wire To Bypass The Blower Switch.
What should I do if my Furnace Fan does not come on?
1. Make sure that your furnace switch is “ON” the furnace blower compartment door is on and secure. Move the lever on the thermostat to the “ON” position. The fan blower should come on. If it doesn’t then you probably have loose or burnt wires in behind the relay or you may need a new fan relay or circuit board.
Why is my HVAC fan not working in my BMW?
HVAC fan doesn’t work at all. In BMW cars, the blower motor resistor often overheats due to incorrect current measurements implemented during the design and engineering of the vehicles. This can cause the HVAC fan to not work at all due to motor failure, and it is unable to blow any air out of the vents.
Why is the fan switch on my 91 wagon not working?
Check the contacts also. Might be damaged or loose. On my 91 Wagon, the actual switch for the fan speed burnt on the inside. It made it work only on speed 1 and 2. The way it burnts made the plastic melt causing the metal spades that touch when you move the switch to end up far apart.
What does the blower motor do in a BMW?
The blower motor resistor in your BMW is part of the HVAC system, or the heating and air conditioning system. The system requires a motor, called the blower motor, which powers the fan utilized to propel air from your cabin vents.
There’s a switch or something located under the blower fan that goes bad, and not all the fan speeds will keep working. Like on mine, the lowest fan speed no longer works, but the rest do. That’s the blower resistor.
When did the blower on my Toyota stop working?
Pirates here at the dealership wanted $169.0 😆 Yeah NOT. Blower stopped working last Thursday, It came back on Friday after I wiggled the blower motor resistor, went back out Saturday. It doesn’t work on any speed.
Check the contacts also. Might be damaged or loose. On my 91 Wagon, the actual switch for the fan speed burnt on the inside. It made it work only on speed 1 and 2. The way it burnts made the plastic melt causing the metal spades that touch when you move the switch to end up far apart.
What to do if your Tacoma blower stops working?
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) ’06 Tacoma Double Cab 4×4, Auto , TRD-Off Road, Silver. BHL mod and removed emblems
What to do when your AC Fan is not working?
Checked for incoming resistance ground to the blower, from the dash control switch and it works. Checked for battery at the blower, when the car is running. There is no battery to operate the blower. Rotated all the PDC relays around, they have the same ID, other than ABS pump.
Why is the fan on my RV not working?
Depending on the type of RV AC unit you have, the bearings on your fan or AC motors may be sealed and self lubricating. But this does not mean that rust or corrosion does not get on some of the parts. Rust and corrosion can stop a fan blade from spinning.
Checked for incoming resistance ground to the blower, from the dash control switch and it works. Checked for battery at the blower, when the car is running. There is no battery to operate the blower. Rotated all the PDC relays around, they have the same ID, other than ABS pump.
What happens if the AC Fan in your RV is not working?
But if the AC fan in your RV does not work right you may lose your cool. The fan is one of the more important parts in your RV AC unit. Keeping it maintained will save you a lot of trouble and help you remain cool. RV AC Fan Not Working: There are a lot of reasons why your RV AC fan does not work.
What happens when a cooling fan relay fails?
If the relay fails, it will be unable to supply power to the fans, and as a result they will not operate. This can lead to overheating, especially when the vehicle is at a stop, where there is no forward motion by the vehicle to pass air over the radiator. 3. Cooling fans stay on at all times
Where is the fuse on a Toyota heater?
the heater fuse/relay is behind the kick panel on the p/s of the car (kick panel is the panel under the dash and between the door and firewall) also while you are down in that area check to make sure the blower motor is getting voltage aka bad blower motor) I think it’s actually a 30A circuit breaker instead of a fuse.
What are common reasons my Pontiac Vibe has heater problems?
What are common reasons my Pontiac Vibe has heater problems? While there are a variety of reasons your Pontiac Vibe heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
How to fix a Pontiac Vibe fan blower?
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What to do if your Ford Fusion heater is not working?
When the blower motor resistor fails, the air conditioner and heater may still work, but air may blow from the vents at only some of the fan speed settings. If the resistor isn…
What happens to the heater when the valve fails?
When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold. Also, the valve could leak engine coolant, p… Read More A failing heater core may cause the car’s interior to smell like engine coolant. The smell will become worse when the heater is turned on.
Why is the blower motor not working on my Ford F150?
During a road trip with the air conditioning operating continuously for many hours, the blower motor stopped functioning. The black/white wire to the blower speed controller was warm to the touch and when wiggled, the blower motor restarted. Operation of the blower motor worsened during the remainder of the trip.
What should I do if my blower motor is not blowing?
Went to the dealer and they acted like it was the first they’ve heard of a 2013 with blower motor issue and wanted $190 to just look at it. (And tried to get me to replace my 6 month old tires… but that’s a different story…)
Why does the fan switch not turn on?
If there’s no voltage when the fan switch is on, then you’ll need to trace things backward. Either the relay isn’t being energized or the other part of the relay isn’t getting power from the fuse. Does the relay click when the fan is turned on?