Haier ESD 300 Series Service Manual page 71

DIAGNOSTICS
Control Panel
Child Lock (various models)
To activate the Child Safety Lock, press and hold
Heated Dry for 3 seconds. Repeat to deactivate.
*The Child Lock indicator will glow when activated.
*If Child Lock is already activated, the Child Lock indicator will flash 3 times.
*The lock can be activate with the door open or closed.
*No controls will function once activated.
*The wash cycle can be started then activated to prevent tampering.