Why does my AC fan only work on high setting?
Have you noticed that the Heater/AC fan only works on the high setting? One probable and most likely solution is that the resistor for the blower motor could be damaged from corrosion. This is especially true of an older vehicle like a 1999 Toyota Camry.
What should I do if my heater fan switch is not working?
As long as there are no bare wires exposed, reconnect the battery cable and try running the heater fan to see if there is other diagnostic work to be done. If everything checks out, disconnect the battery again, route the switch back through the hole, and attach it with the nut.
Is the low speed fan connected to the high speed fan?
In the example included to the right, we can see cooling is connected to high speed, the heat is connected to medium speed, and the low speed is not being used (it’s just parked). From our previous example, let’s pretend we’re looking at a 60 kBTU furnace with a 2.5 ton AC attached to it, and we’re in Chicago.
What happens when a heater motor resistor fails?
If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed. The heating and air conditioning systems may still function at one speed, however the resistor will have to be replaced in order for full functionality to be restored. 2. Blower motor does not work on certain settings
Why does my AC fan only work on high?
If your speed selector for your AC or Heat only works on high, or low, or if its missing any particular speed, this video will show you how to fix it once and for all. This is a fix for 2nd generation Dodge Rams (1994-2001-2002 2500/3500) Loading…
Are there any problems with the Ford F150 heater fan?
2014 Ford F150 heater fan… 2014 Ford F150 heater fan problems. It would only work on fast speed, then turn itself off. Had to shut off control switch and wait a few minutes and it would come back on then shut off after a minute.
Can a blower fan only work on high speed?
Blower Motor Fan Only Works On High Speed? Plus – Tips To Prevent Repeat Failures! If playback doesn’t begin shortly, try restarting your device. Diagnostic training videos and content hosted by ASE Master and L1 Certified Technicians.
When to replace AC fan speed resistor 98-04?
Buy Now! When your blower motor for the AC and heat isnt working on all settings then chances are your blower motor resistor has failed. This is usually do to moisture from the cabin air box corroding the electrical component. Here we’ll show you how to repair it and if you’re in need of a new one, check out 1AAuto.com.