The 7 red error LED sequence indicates an over-calibration of the unit. This can occur from leaving the unit in adverse conditions such as direct heat or cold exposure. To solve this issue perform an atomizer recalibration in a controlled environment with an ambient temperature of 77 degrees. From there follow these steps:

1. Turn off the device and cool the atomizer to 77° F.

2. Turn the device back on.

3. Press the power button 4x. On the 4th press, hold down the power button for 20 seconds or white LEDs appear.
           NOTE: 3 white LED blink indicates failure, 4 indicates successful calibration

If you are still experiencing this issue please register your device [https://focusv.com/apps/product-registration] and submit a warranty claim here: https://support.focusv.com/hc/en-us/requests/new