Safety: Disconnect power before accessing the interior fan. Fan blades and metal edges can be sharp.

Procedure:

Check for airflow: With the unit briefly powered (before disassembly), listen for the evaporator fan when the compressor is running. If silent, unplug and continue.
Access fan: Remove the interior rear panel to expose the evaporator coil and fan assembly.
Inspect fan: Check if the fan blade spins freely by hand. Remove any ice, wiring, or insulation obstructing the blade.
Check wiring: Ensure the fan motor connector is firmly attached and wires are not damaged.
Test motor: If you have a multimeter, check for continuity across the fan motor leads. An open circuit indicates a failed motor.
Replace fan motor: Install a new Transtherm evaporator fan motor if the original is seized or electrically open. Transfer the fan blade if necessary and ensure correct rotation direction.
Reassemble and test: Refit the panel, restore power, and verify that E8 clears and airflow is restored.

Note: If the fan tests good but does not receive voltage when commanded, the main control board may be at fault.

Display shows E8 and the interior fan does not run or runs at incorrect speed

Possible Causes