Hi, New Guy here. My heater fan quit working on my E 350 van. Where are the fuses for this fan. I checked under the hood all of those are fine.
Looking for trouble shooting help.

DWC

 

Get a voltmeter and check the voltage on both wires to the blower motor when the motor should be on HIGH.

If no voltage on either, then you have a loss of power (fuse, relay, switch, etc)

If you read battery voltage on both leads, you have an open ground.

If you read battery voltage on one and ground on the other, the motor is bad.

See owner's manual for fuse and relay information. See signature below, if necessary.