American Water Heater VG6250T 110 Benutzerhandbuch

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The current operational state of the water heater is displayed on the Desktop screen as the Status. The common operational states are 

described in the table below.

Standby

The water heater is not in an active heating cycle. IE: the Tank Temperature is at or above the Operating Set Point minus 

temperature differential.

Input Verification

The control system is conducting a diagnostic check at the beginning of a heating cycle.

Short Cycle Delay

The control system is waiting for a pre-defined time period to expire before initiating a heating cycle. This prevents short-

cycling which can greatly accelerate wear on components such as the Igniter and Combustion Blower. 
NOTE: If the control system is in this operational state increase the Differential setting in the Temperatures menu to lengthen 

heating cycles.

Pre-Purge

The Combustion Blower is energized to flush residual flue gases from the combustion chamber prior to ignition.

Igniter 

The Igniter is energized and is ready to ensure proper ignition.

Gas  Control  Valve 

On

The 24 Volt Gas Control Valve is energized and opens to allow fuel gas to flow to the Main Burner.

Inter-Purge

The Combustion Blower is energized to flush residual fuel gas from the combustion chamber after a failed ignition attempt.

Heating

Ignition was successful, flame sensing current has been established. The water in the storage tank is being heated.

Post-Purge

The Combustion Blower is energized to flush residual flue gases from the combustion chamber at the end of a heating 

cycle.

Fault

The control system has detected a Fault condition. Heating operation is disabled (control system lock out) until the Fault 

condition is corrected. Water Heating Enable/Disable Switch must be cycled off and on to reset the control system. 
NOTE: Cycling Water Heating Enable/Disable Switch will not reset the control system if the condition that caused the Fault 

has not been corrected.

Heating Disabled

The heating is disabled by the Enable/Disable (On/Off) switch in front of the unit.

From the Desktop screen pressing the Operational button directly below Menu on the LCD will display the Main Menu. This is where all 

control system menus are located. The table below describes the control system menus.

Temperatures

Most commonly accessed menu. Contains the Operating Set Point and Differential user settings.

Heater Status

This menus displays the current state of all pressure switches and the ECO (open/closed). The on/off status of the 

Combustion Blower, 24 Volt Gas Control Valve, Igniter, Flame Sensor and other monitored water heater components 

are displayed in this menu.

Display Settings

Temperature units (°F or °C), the LCD appearance (brightness/contrast) and backlight delay user adjustable settings 

are located in this menu.

Heater Information

Elapsed time of operation, total heating cycle time, heating cycle count, heating on time along with UIM and CCB 

software revisions can be viewed in this menu.

Current Fault

Displays any current Alert or Fault messages.

Fault History

This control system menu retains a list of the last nine (9) Fault and Alert messages with a time stamp. The newest 

event will replace the oldest. Fault history memory is cleared after 30 days.

Fault Occurrence

This control system menu retains a running total of how many times each Fault condition has occurred since the water 

heater was first installed. Fault occurrences numbers are saved in the CCB memory indefinitely.
NOTE: if the CCB is replaced during service the fault occurrence historical information for the water heater is lost.

Restore Factory Defaults This control system feature allows the user to restore control system user settings to their factory default settings. 

Display Settings preferences ARE NOT changed when factory defaults are restored.

Help Screens

Text based operational and user information explaining how to change user settings, navigate the control system menus 

and icon descriptions.