Replacing the blower motor

I wonder if @dolj might have some ideas

 

That's weird. A centrifugal blower generally will push air the same way (in at the center, out at the periphery) whichever direction it spins. Because of the blade shape, it will push less air if spinning in the unintended direction, but it's never going to reverse the direction of airflow.

Often, the blade shape will fool you as to what the intended rotation direction is. Shaping those blades is complicated.

How did you verify the air was "sucked"?

 

Given you are in Australia, there is a good chance your blower is different than ours based on "the old motor [number] is 272700-8074."

That number is known as a housing number and is not the part number. However the housing number for a US Prius v is different which means our part number is also different.

Some used sellers think the housing number is the part number and therefore a buyer can sometimes find that number on ebay. I found your part on ebay in the UK and other locations outside of the US.

The thing to do is to ask for a part number from a local Toyota dealer, ideally in person, using your vin or vehicle serial number. With a part number, generally in this format (87103-0xxxx) you can then look for used blower assemblies or possibly aftermarket blowers and compare to a dealer price.

I found a few on ebay in Europe including the UK. Again this is not the part number.

The shipping and import charges are for a US address due to our current trade war. Your charges may be far less.

This blower has electronics in it to take a pulse train from the AC Amplifier ecu as control for the blower's variable speed power electronics.

From a wiring standpoint it is simple:

Constant power, ground and a signal line.

Finally, I would make sure the newer blower wheel has the same fin orientation as the original.

 

I have some questions about your post.

So to clarify, is your Prius v an Australian Market (ARL) model, or did you buy a JDM import, or is it an import from some other market? I ask because you are saying your car is a LHD. If it were an ARL or JDM, it would be a RHD. Or did you mean that you drive on the LHS of the road?

This would make sense if you got a fan for a car with the steering wheel on the opposite side of the car. The blower is located on the opposite side of the driver. If you really got an LHD unit for an RHD vehicle, that would make sense, as the blower enclosure, cage and fan would be a mirror image, and the motor would spin in the opposite direction.

The number stamped on the part is generally not a part number. Toyota stamps numbers that are in the same format as a part number, which are not part numbers, but more likely some kind of inventory or manufacturing number; not helpful.

If your car is really an ARL RHD Prius v (marketed in Japan as the Prius ⍺ (alpha)), then you can use part number 87103-12060; PNC 87103B - MOTOR SUB-ASSY, BLOWER W/FAN. It sells on Amayama for ~AU$265.32 plus about $10-12 shipping. There is an Amayama warehouse in Australia. I wasn't able to locate a source for an aftermarket equivalent part, but you could ask at Repco or SuperCheap if they have an aftermarket equivalent.

I hope that helps. Let me know if you have any questions.

 

It still wouldn't make very much sense, though, as the blower is a centrifugal design, and those characteristically will always move air the same direction (in at the center of the blower wheel, and out around its periphery into the enclosure volute) no matter which direction the motor spins. (See post #3.)

The shape of the blower wheel fins and of the enclosure typically make one spin direction better than the other: the blower will move lots of air if spinning the 'right' way, and move less air if spinning the 'wrong' way—but it'll still move the air the same direction. And it's harder than you'd expect to guess the 'right' rotation direction by looking at the curve of the fins; your intuition can fool you.