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| ELECTRONIC CONTROL SYSTEM |
Table 2 - Operating States | ||
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| STATE | DESCRIPTION |
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| Standby | The water heater is not in an active heating cycle. This usually indicates the |
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| temperature in the tank has reached the Operating Set Point and the control system |
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| has terminated the heating cycle. |
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| Heating | The control system is in the Heating Mode. At least one bank of heating elements has |
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| been energized. |
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| Alert | The control system has detected/declared an Alert Condition. The controls system will |
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| continue heating operation. However, a Qualified Service Agent should be contacted to |
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| check/service the water heater. |
| Fault | The control system has detected/declared a Fault Condition. The control system will |
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| discontinue heating operation and “lock out.” Power to the water heater must be cycled |
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| off and on to reset the control system. Note; cycling power will not reset the control |
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| system until the condition that caused the fault has been corrected. |
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Table 3 - Control System Menus | ||
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| MENUS† | DESCRIPTION |
| Temperatures | Most commonly accessed menu. Operating Set Point, Differential settings, Tank |
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| Temperature and Tank Probe Offset are located in this menu. |
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| Heater Status | Current Operating State/Mode (heating/standby etc) and status (open/closed - on/off - |
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| yes/no) of monitored water heater functions and components are displayed in this |
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| menu. |
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| Economy Mode | Seven day 24 hour time clock with temperature set back capability to reduce operating |
| Setup | costs during unoccupied or reduced demand periods. |
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| Alarm Output Setup | The control system’s CCB (Central Control Board - see page 42) features on board |
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| SPDT (single pole double throw) relay contacts for building EMS (Energy Management |
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| System) notification of operational conditions such as Fault Conditions and heating |
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| mode status. This menu features a list of user definable conditions for relay activation. |
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| Display Settings | Temperature units (°F or °C), appearance (brightness contrast) and backlight delay |
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| user adjustable settings are located in this menu. |
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| Heater Information | Elapsed time of operation, total heating cycle time, heating cycle count, heating |
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| element bank(s) cycle count and heating bank on time along with UIM and CCB |
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| software revisions can be viewed in this menu. |
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| Current Fault/Alert | Displays any current Alert or Fault messages. |
| Fault History | Retains 9 event history of Fault/Alert messages with time stamp. The Fault History is |
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| useful when dealing with intermittent operational problems or when the customer has |
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| reset the control system prior to a service agent’s arrival. |
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| Fault Occurrence | Total accumulated number each individual Fault condition has occurred is displayed in |
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| this menu. This running total of Fault Occurrences can be useful in determining which |
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| (if any) operational problems have been persistent. |
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| Restore Factory | This control system feature allows the user to restore control system user settings to |
| Defaults | their factory default settings. Alarm Output Setup and Display Settings menu items |
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| ARE NOT changed when factory defaults are restored. |
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| Help Menu | Accessible by pressing the corresponding Operational Button from most menus and |
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| screen displays. This menu provides access to instructions and explanations for user |
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| settings, Operating States, Status Icons, manufacturer’s web address, technical |
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| support phone number and service agent contact information. |
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†.This table shows a list of the control system menus. These menus will be explained in greater detail in the pages that follow.
Servicing should only be performed by a Qualified Service Agent
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