Honda Odyssey heater fan does not run?

If the heater fan in your Honda Odyssey is not running, it could be due to a blown fuse, a faulty blower motor, or a malfunctioning resistor. First, check the fuse related to the heater fan in the fuse box to see if it needs replacing. If the fuse is intact, the blower motor or resistor may need to be tested for proper operation. Additionally, ensure that the climate control settings are correctly adjusted and that there are no obstructions in the air intake.