The Desktop Screen - A.O. Smith dre-52 Service Handbook

THE DESKTOP SCREEN

The illustration below shows the control system "Desktop Screen." This is the default
screen. If there are no active Fault or Alert conditions and no user input for approximately 10
minutes the control system will return to this screen automatically.
Model Information: Model information and menu titles are shown in the black bar at the top
of the Desktop Screen.
Tank Temperature: Current water temperature as sensed from the immersion Temperature
Probe.
Operating Set Point: Temperature at which the control system will maintain tank (water)
temperature in the Normal Mode. This line of text will read Economy Set Point whenever
the control system is operating in the Economy Mode. See Temperatures Menu section
beginning on page 52 and Economy Mode Setup Menu section beginning on page 55.
Status: The Operating State of the control system is displayed beneath the Operating Set
Point. See Table 2 on page 51.
Service Note: The Desktop Screen
displays text and animated icons that
convey operational information.
Review the Status Icons explanation
in Table 1 on page 50 and Contactor
Configurations on page 30. Learning
to use this real time visual display of
the operating sequence will help to
quickly diagnose operational
problems.
Day/Time/Operating Mode: The current time and day are also displayed on the Desktop
Screen. "Clock Not Set" will be displayed until the time clock (page 57) has been initially set.
Day and Time are adjusted in the Economy Mode Setup menu. The current Operating
Mode, either Normal Mode or Economy Mode, is displayed beneath the day and time.
Menu: The left Operational Button is pressed to enter the Main Menu where all control
system menus are accessed. See Table 3 on page 51 for a list of control system menus.
Help: The right Operational Button is pressed to access instructions and explanations for
user settings, Operating States, Status Icons, manufacturer's web address, technical
support phone number and service agent contact information.
Discreet Menu Contact Information: From the Desktop Screen press and hold down the
middle (unmarked) Operational Button for 30 seconds and then release it. This will launch a
discreet menu where personalized contact information can be entered. Installing contractors
and/or service agents can enter their company name and telephone number. This contact
information will be displayed with all Fault and Alert messages.
Servicing should only be performed by a Qualified Service Agent
ELECTRONIC CONTROL SYSTEM
Status Icons
Figure 5
49