Question: HWM100-1678ES5 Tub Clean, display CH / BH / AH

1. Press the button “Spin” and “Program” simultaneously to select the tub clean function. This function is to clean the inner and outer tub of the washing machine.

2. Please ensure the soaking time is at least 10 hours and use the “Spin” cycle alternately to optimize the cleaning impact.

3.  Remove the laundry when tub clean in progress.

4.  The running time of the Tub Clean is longer, which takes 12 hours in total. After the bucket Tub Clean  program starts, the countdown starts from 12 hours.

The time 12 hours is represented by CH display, 11 by BH, 10 by AH), 12 (CH), 11 (BH), 10 (AH),then 09... 01. The AH shown in this video stands for 10 hours.