Heater Blower fault for Polo

WE HAVE NO MANUALS IN USA FOR INDIA ! zip ,zero, nada.
not told you at, all does the other 100 things on the car work]?
car drives day and night OKAY>?
heater blower work? heard and felt blow.?
head lamps work on low and high beams?
?
radio works.?
blinker turns signals work.
reverse lamps work.

my guess is car has BCM that is sick.
so we SCAN the PCM/BCM at the OBD2 DLC scan port and it tells me BCM errors.
you said fuses are good but there are vast fuses now on a car even 50 fuses, in engine bay and 1or 2 fuse boxes in the cab.
the glove box users guide answers where they are;.
if battery voltage drops below 10vdc, the BCM will go crazy.
when engine runs the Battery/charge./Gen lamp must not glow,
right? seen in the IP cluster,

Try unplugging the blower motor, heater control unit and blower motor resistor. Replace the fuse then reconnect the items 1 by 1 and see what pops the fuse.

Normally when the blower motor goes out it has trouble a few days before and cuts in and out so I would check fuses first but I may be wrong and if the fuses are fine the I would change the motor

all speeds go through the resistor except high that is why it will work on high you are bypassing the resistor if you are sure the resistor is good it has to be the blower spped switch on the dash

REMOVE HEATER BLOWER MOTOR AND HOT WIRE IT.IF HEATER BLOWER MOTOR WORKS WHEN HOT WIRED EITHER BLOWER RELAY BAD OR AC AND HEATER CONTROL SWITCH NOT WORKING.IF BLOWER DONT WORK WHEN HOT WIRED BLOWER MOTOR IS BAD.

fuse blows. unplug heater blower motor turn ignition on, turn heater on, does fuse blow? if not need to replace heater blower motor

fuse in fuse box there are 2 of them 1 under hood marked fuses and 1 under dash or in glove box

happy hunting and check your book

check 4WD fuse also fuse and relay to heater blower.if all is good remove and hotwire blower motor using jumper wires to battery.if blower motor dont work replace it.if it work you have a faulty blower switch or resistor bad.

Disconnect blower motor & try another fuse....if it don't blow fuse then blower motor shorting out..

check antifreeze level also check the fuses to the blower motor