Rinnai CNTRLDRCINW Operation And Installation Manual page 16

Keypad tone setting
Press the swing and function buttons together for three seconds to turn
on or turn off the keypad tone.
Child lock function
Press the up and down buttons at the same time for three seconds to
activate the child lock function and lock all the buttons on the controller.
Press the same two buttons again to deactivate.
When the child lock function is activated the lock symbol
appears.
Turbo
This mode allows you to cool indoor air quickly in summer or warm it
quickly in winter. In Turbo mode the fan is set to operate at maximum
output.
Turbo will only function when in cooling or heating
mode. Press the function button until the turbo fan
symbol appears, press again to deactivate.
Standard fan Turbo fan
symbol symbol
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