Diagnosis
F7 E1 is a specific communication error. It means the main control board (the user interface you touch) is not talking to the motor control board. It's an internal electronic handshake failure, not usually a mechanical problem.
How to Fix It
The first and best step is a full power reset. Unplug the dryer from the wall outlet. Wait 3 full minutes—this is longer than a typical reset to ensure all capacitors discharge. Plug it back in. The error should clear. Start a simple timed dry cycle to test. This often resolves the glitch.
If That Didn't Work
If the error returns immediately or soon after the reset, the connection between the two boards might be loose. This requires taking off the console and possibly the front panel to check the wiring harnesses that connect the control panel to the main assembly. Look for any visibly disconnected plugs.
Heads Up
Persistent F7 E1 errors after a reset and cable check usually point to a failed control board. Unfortunately, that's a professional repair call for diagnosis and replacement, as it involves ordering the correct board module and programming.