Control Overview - State Water Heaters 60120-100250 Service Handbook

CONTROL OVERVIEW

Interaction with the water heater controller is through an UIM display called the User Interface Module
(UIM). This screen is also referred to as the "desktop" or "desktop menu". Up and down buttons and
three operation buttons allow navigation through the control menus and to make adjustments to the water
heater. Operation of the three lower buttons is defined immediately above them on the screen.
While the water heater is operating, the user interface will display the UIM screen (if there are no active
faults or warnings).
An example of this screen is shown below.
• The first temperature on this screen is the temperature of the water inside the tank.
• The second temperature on this screen is the Operating Set Point. The Operating Set Point is the
temperature at which the water heater will maintain the water inside the tank.
• The third line on the screen is a text description of the Operational State of the water heater. The
operational state of the water heater is also indicated graphically by status icons.
LCD Screen
Information
Tank Temperature
Display
Operating Set Point
Status: Heating
Status Icons
Operational buttons are multi functional. Their current function is defined by
the text that appears directly above each button on the LCD screen.
54
UIM (User Interface Module)
MANUFACTURER / MODEL INFORMATION
OFF
GAS
MENU
(UIM) User Interface Module Screen
Servicing should only be performed by a Qualified Service Technician
103°F
UP
120°F
DN
O
N
HELP
Title Bar
Up & Down buttons:
navigate menus,
adjust user settings
3 Operational buttons:
enter/exit menus,
select menu items,
activate adjustment modes,
confirm/cancel changes.