Lochinvar EnergyRite ER252 Service Manual page 12

1
Service
Keypad lockout
Locking the keypad
The user has the ability to lock the keypad to prevent
unauthorized adjustments. To lock the keypad, the user must
first select and input a passcode. See Set Passcode under Setup
Menu Descriptions on page 10 of this manual. Once a passcode
has been set, press and hold the UP and DOWN buttons
simultaneously for 5 seconds. The Display Screen will show
ENTER PASSCODE. The digit on the far left will be blinking.
Use the UP and DOWN buttons to adjust the digit. Press the
MENU button to advance to the next digit to the right. Use the
UP and DOWN buttons to adjust the digit. Press the MENU
button to advance to the next digit to the right. Repeat this
process until all four digits have been set. Once the last digit has
been set, press the MENU button.
If the passcode has been entered correctly, the display will show
LOCKED for 3 seconds and will then resume normal operation.
If the passcode has been entered incorrectly, the display will
show INCORRECT PASSCODE for 3 seconds and will then
return to the Passcode Screen for retry. If there is no button
activity for 5 seconds the keypad will remain unlocked.
If the keypad has been successfully locked, when any button is
pressed, the display will read LOCKED for 5 seconds and will
then resume normal operation.
12
Unlocking the keypad
Press any button and hold for 5 seconds. The Display Screen
will show ENTER PASSCODE. The digit on the far left will be
blinking. Use the UP and DOWN buttons to adjust the digit.
Press the MENU button to advance to the next digit to the right.
Use the UP and DOWN buttons to adjust the digit. Press the
MENU button to advance to the next digit to the right. Repeat
this process until all four digits have been set. Once the last digit
has been set, press the MENU button.
If the passcode has been entered correctly the display will
show UNLOCKED for 5 seconds and will then resume normal
operation.
If the passcode has been entered incorrectly the display will
show INCORRECT PASSCODE for 5 seconds and will then
return to the Passcode Screen for retry. If there is no button
activity for 5 seconds the keypad will remain locked.
Service Manual