A.O. Smith 300 Series Instruction Manual page 41

LCD Touch Display
Information
Display
Status Icons
Operational menus are multi functional.
STATUS ICONS
The Status Icons are displayed on the Desktop screen and convey operational and diagnostic information. The icons are described
in the table below.
Icon Description
Water temperature in the tank has fallen. Shaded area of the animated thermometer icon will rise and fall in response to
water temperature in the storage tank as sensed from the Temperature Probe. See Figure 3 (page 10) and Figure 4 (page
11) for location of the Temperature Probe.
Water temperature in the tank has reached the Operating Set Point. The control system enters the Standby mode.
The control is unable to initiate a heating cycle. This will happen whenever a Fault condition is detected by the control
system or when the Enable/Disable switch on front panel is in disable position. Display will read "Status: Water Heating
Disabled".
Note: When water heater is in disabled mode, a text message will appear next to the icon identifying cause
The Combustion Blower is being energized.
The Spark Igniter is being energized. See Figure 3 (page 10) and Figure 4 (page 11) for location of the Spark Igniter.
The 24-volt gas valve is being energized.
OFF
O
GAS
N
The control system has sensed flame at the Main Burner from the flame sensor.
The control system has declared a Fault condition and must be inspected/serviced by a Qualified Service Agent. Fault
message details can be viewed in the Current Fault menu. Heating operation is disabled (lock out) until the condition that
caused the Fault is corrected. Power to the water heater must be cycled off and on at the breaker to reset the control
system.
Note: Cycling power will not reset the control system if the condition that caused the Fault has not been corrected.
The control system has declared an Alert condition and must be inspected/serviced by a Qualified Service Agent. The
water heater will continue to operate during an Alert condition.
Operating Set Point
Status: Heating
MENU
Enable/Disable Switch*
Figure 45. User Interface Module (UIM) Desktop Screen
of disable mode.
120°F
OFF
O
GAS
N
HELP
Table 11. Status Icons
41
Title Bar
* See the Features and
Components section of this
manual for the precise location.