Mazda Repair Questions? Ask Mechanics for Answers ASAP
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When you say the vents aren't blowing, do you mean the blower motor has stopped working?
Yes, it's very possible it blew a fuse.Especially if it's full of water in there. If the water actually gets to the blower motor it will take out the fuse as well as the blower motor. I think I would pull the blower motor out to see if there is any water at it's level in the box. If there is it could be the problem. As for the drain, if it's possible for you to do it, try running a coat hanger up it. Sometimes they work very well for clearing any blockage. Give me a few moments to locate the blower fuse on your model. I suspect it's under the hood in that box if you want to take a look while I am trying to find the info. It should be labeled on the cover.
looks like there should be a fuse labeled HTR under the hood. This is a large 50 amp fuse.
Let me know.
Typically the relay won't fail before the fuse. You have 2 powers to the relay, the heater fuse under the hood and the ignition switch.
At the blower though, you have the motor and the resistor. If the resistor has gotten water on it, it can stop the blower from working.
Sorry though, no fuses inside power the blower.