Child Lock - Dimplex Quantum series Quick Start Manual

Child lock

To lock the heater's controls and prevent them from being
changed, use the Child Lock mode.
To activate Child Lock: Press and hold the dial and the
Back button at the same time for three seconds. Child Lock
will then appear on the display screen.
To deactivate Child Lock: Press and hold the dial and the
Back button at the same time for three seconds.