Rinnai RHFE-431WTA - Manual (Page 38)

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FUNCTION LOCK
The Function Lock will help to prevent accidental operation of the appliance as well as children from
altering the controls.
1
1
To activate the Function Lock:
Press the “ ” and “ ” buttons
at the same time. The “Function
Lock” indicator will light.
To deactivate the Function Lock:
Press the “ ” and “ ” buttons
at the same time for approx 2
seconds until a “beep” is heard.
The “Function Lock” indicator will
go out.
NOTE:
The lock can be activated when the heater is ON or OFF.
If activated while the heater is ON, all controls other than the OFF switch will be locked.
If activated while the heater is OFF, then all controls will be locked.
If the heater is turned off while the Function Lock is activated, it cannot be turned on again until the lock
is deactivated.
Deactivating the lock releases the controls.
Set Room
Man
ON
pm
Tu Function Lock
Programming
Clock Select
At the same time
Timers
Set Room
Man
ON
pm
Tu
Programming
Clock Select
At the same time for 2 seconds
Timers