Instructions / Assembly

whl-004 Rev. 000 Rel. 013 Date 5.1.18
49
Part 9 - Controls
A. Control and Display Overviews
Figure 47 - Control Panel Detail
Figure 48 - LCD Display
B. Start-Up Sequence
After the appliance is powered ON, the LCD display shows a sequence
of information. The icons will ash, followed by various indicators that
describe the appliance controller and software versions. It will take the
appliance roughly 15 seconds to cycle through the Start-Up Sequence.
Display Items Time for Display Remarks
LCD Test
1 sec All segments “ON”
0.5 sec All segments “OFF”
Category
Tankless Water Heater
1 sec Pdn
1 sec 0061
Software Version for
Front Panel
1 sec SPn
1 sec 00.xx
Software Version for
Water Heater
1 sec SFn
1 sec xx.xx
Hardware Version for
Water Heater
1 sec Hdn
1 sec 00xx
Table 28 - Start-Up Sequence
LCD also features a backlit lamp that will illuminate:
• When a user action is detected (a button is pressed)
• The display has timed out for approximately 2 minutes
After start-up, the display appears as follows.
Figure 49 - Initial Display Screen
The Control System can operate through user and service modes
that have specic LCD outputs and dedicated controls, including:
• Changing the DHW Set-Point Temperature
• Status Display
• Installer Mode
• Error Mode
• High Elevation Mode
• Cascade Mode
• High Temperature Mode
NOTE: The Control System will not allow changes if Lock Mode is
activated. Press and hold the button is pressed for ve seconds
to unlock the control.