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6-11SectionSystem Maintenance
205
Press Quit to return to the screen number
selection screen.
Press Disp.
T 015003
RUN
BOILER OPERATION
T 015301
STOP
T 016312
ERROR
L 020000
Start
Confirmation
Stop
Confirmation
Error
Occurrence
L 020005 L 020013
Touching the top or bottom of the screen
changes the way the display elements over-
lap each other in the order in which they are
registered.
In this example, the bottom portion of the
touch switch, which is under the lamp, will be
displayed over the lamp.
T 015003
RUN
BOILER OPERATION
T 015301
STOP
T 016312
ERROR
L 020000
Start
Confirmation
Stop
Confirmation
Error
Occurrence
L 020005 L 020013
When you have finished checking the screen,
press the central part of the screen to return
to the screen number selection screen.
If you wish to continue by checking another screen, repeat the operation, start-
ing by specifying the screen number.
To end the operation, press Quit on the screen number selection screen. The
NT31/NT31C returns to the MAINTENANCE MODE MENU screen.
6-11-7 Device Check
The NT31/NT31C provides checks on the functions of the following items.
• Buzzer Page 205
• LED Page 206
• LCD Page 208
• Backlight Page 209
• Screen data memory Page 209
• Touch switches Page 212
• Battery voltage Page 214
Check if the buzzer sounds correctly.Checking the Buzzer