American Water Heater HeavyDuty Surface Thermostat Commercial Electric STCE3150 80 119 User Manual

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THERMOSTAT  SETTINGS - ELECTRONIC CONTROLS 
These  models  are  equipped  with  an  electronic  control  system.  The 
control system senses temperature from a factory installed Immersion 
Temperature  Probe  (see  Figure  2).  The  “Operating  Set  Point”  is 
adjusted  to  control  water  temperature.  This  is  an  adjustable  user 
setting  in  the  control  system’s  “Temperatures  Menu.”  This  and  all 
control system menus are accessed through the UIM (User Interface 
Module - see  Figure 8) located on the front panel of the water heater.The Operating Set Point is adjustable from 90°F/42°C to 190°F/88°C. 
The factory setting is 120°F/49°C. See the Electronic Control Models 
Operation  section  of  this  manual  for  instructions  on  how  to  adjust 
the Operating Set Point and other user settings.
UIM (User Interface Module)
Figure 8 
Set the Operating Set Point at the lowest setting which produces 
an acceptable hot water supply. This will always give the most 
energy efficient operation.
CONTROL SYSTEM FEATURES
Advanced	
Diagnostics:	 Plain English text and animated icons display 
detailed  operational  and  diagnostic  information.  LCD  screen  on  the 
front of the water heater displays the Sequence of Operation in real 
time. Fault or Alert messages are displayed when operational problems 
occur. Advanced Service menu displays a list of possible causes for 
current Fault and Alert conditions to aid in servicing.
Economy	 Mode	Operation:  Control  system  automatically  lowers 
the Operating Set Point by a programmed value during user defined 
time  periods.  Helps  reduce  operating  costs  during  unoccupied  or 
peak demand periods.
Linear	 Sequencing:   Banks  of  heating  elements  (3  elements  per 
bank) are energized according to adjustable (1 to 20°) differential set 
points for each bank. First bank on is the last bank off. Helps reduce 
operating costs during low/moderate loads.
CONTROL SYSTEM NAVIGATION
The UIM (User Interface Module) is located on the front cabinet of the 
Electronic Control Model water heaters. All operational information 
and  user  settings  are  displayed  and  accessed  using  the  UIM. The 
UIM  includes  five  snap  acting  (momentary)  user  input  buttons;  an 
Up, Down and 3 Operational Buttons.
UIM - USER INTERFACE MODULEFigure 9 
Up & Down Buttons
Used to navigate (up and down) and to select (highlight) menu items. 
Also used to adjust or change (increase/decrease, on/off, set time) 
various user settings.
Operational Buttons
The  3  Operational  Buttons  are  multifunctional.  Their  current  function 
is  defined  by  the  text  that  appears  above  each  button  on  the  LCD 
screen. The function will change depending on what menu is currently 
displayed or what menu item is selected. When no text appears on the 
LCD screen above an Operational Button there is no function assigned.
THE DESKTOP SCREEN
Figure  10  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.
Status:	 The  Operating  State  of  the  control  system  is  displayed 
beneath the Operating Set Point.
Figure 10 
ELECTRONIC CONTROL MODELS OPERATION 
						

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Menu: The left Operational Button is pressed to enter the Main Menu 
where all control system menus are accessed. See Table 9. 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.
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 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.
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.
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 immersion Temperature Probe.
Water temperature in the tank has reached the Operating Set Point. Shaded area of the animated thermometer 
icon  will  rise  and  fall  in  response  to  water  temperature  in  the  storage  tank  as  sensed  from  the  immersion 
Temperature Probe.
The  control  is  unable  to  initiate  a  heating  cycle.  This  will  happen  whenever  a  Fault  condition  is  detected  by  the 
control system or when either of the two Enable/Disable circuits are open circuits.
The control system is in Heating Mode and has energized the electromagnetic contactor coils for at least one bank 
of heating elements. This animated icon DOES NOT indicate current has been sensed from the heating elements, 
only that there is a call for heat present and the control system has initiated heating operation.
Heating elements icon for a water heater equipped with 1 Bank of heating elements. Each circle represents one 
heating element. Each diagonal row of 3 elements = 1 Bank of elements. Open circles represent heating elements 
the control system has not energized and is not sensing electrical current from.
Heating elements icon for a water heater equipped with 2 Banks of heating elements. Each circle represents one 
heating element. Each diagonal row of 3 elements = 1 Bank of elements. Open circles represent heating elements 
the control system has not energized and is not sensing electrical current from.
Heating elements icon for a water heater equipped with 3 Banks of heating elements. Each circle represents one 
heating element. Each diagonal row of 3 elements = 1 Bank of elements. Open circles represent heating elements 
the control system has not energized and is not sensing electrical current from.
Heating elements icon for a water heater equipped with 3 Banks of heating elements. Each circle represents one 
heating element. Each diagonal row of 3 elements = 1 Bank of elements. Filled circles represent heating elements 
the control system has energized AND is sensing electrical current from.
Heating elements icon for a water heater equipped with 3 Banks of heating elements. Each circle represents one 
heating element. Each diagonal row of 3 elements = 1 Bank of elements. Open circles with an X represent heating 
elements the control system has energized that it IS NOT sensing electrical current from.
The  control  has  detected/declared  a  Fault  Condition.  Fault  message  details  can  be  viewed  in  the  Current  Fault 
menu. Heating operation is discontinued (locked out) until the condition that caused the fault is corrected. Power 
to the water heater must be cycled off and on 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  has  detected/declared  an Alert  Condition.  The  water  heater  will  continue  to  operate  during  an Alert 
Condition but there is an operational condition that requires the attention of a Qualified Service Agent. Alert message 
details can be viewed in the Current Alert menu.STATUS ICONS.
Table 7.  
						

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TEMPERATURES MENU
Operating Set Point 
User  adjustable  setting  90°F  to  190°F  range;  factory  default  is 
120°F. When the water temperature sensed by the control system 
from the immersion Temperature Probe reaches the Operating Set 
Point  the  control  system  will  end  the  heating  cycle. A  call  for  heat 
will be activated again when the water temperature drops below the 
Operating Set Point minus the 1st Differential Setting.
Example: Operating Set Point is 120°F, the 1st Differential Setting is 
2°F (factory default). A call for heat will be activated when the sensed 
water temperature drops to 118°F.
S TAT EDESCRIPTION
Standby The water heater is not in an active heating cycle. This usually indicates the temperature in the tank has reached 
the Operating Set Point and the control system has terminated the heating cycle.
Heating The control system is in the Heating Mode. At least one bank of heating elements has been energized.
Alert The control system has detected/declared an Alert Condition. The controls system will continue heating operation. 
However, a Qualified Service Agent should be contacted to check/service the water heater.
Fault The control system has detected/declared a Fault Condition. The control system will discontinue heating operation 
and “lock out.” Power to the water heater must be cycled off and on to reset the control system. Note; cycling power 
will not reset the control system until the condition that caused the fault has been corrected.
MENUS
DESCRIPTION
Temperatures Most  commonly  accessed  menu.  Operating  Set  Point,  Differential  settings,  Tank  Temperature  and  Tank  Probe 
Offset are located in this menu.
Heater Status Current Operating State/Mode (heating/standby etc) and status (open/closed - on/off - yes/no) of monitored water 
heater functions and components are displayed in this menu.
Economy Mode Setup Seven day 24 hour time clock with temperature set back capability to reduce operating costs during unoccupied 
or reduced demand periods.
Alarm Output Setup The control system’s CCB (Central Control Board) features on board SPDT (single pole double throw) relay contacts 
for building EMS (Energy Management System) notification of operational conditions such as Fault Conditions and 
heating mode status. This menu features a list of user definable conditions for relay activation.
Display Settings Temperature  units  (°F  or  °C),  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 element bank(s) cycle count and 
heating bank on time along with UIM and CCB software revisions can be viewed in this menu.
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 useful when dealing with intermittent 
operational problems or when the customer has reset the control system prior to a service agent’
s arrival.
Fault Occurrence Running total of all Fault and Alert Conditions that have occurred are displayed in this menu. Can help determine 
potential root cause(s) of related operational problems.
Restore Factory  Defaults This control system feature allows the user to restore control system user settings to their factory default settings. 
Alarm Output Setup and Display Settings menu items ARE NOT changed when factory defaults are restored.
Help Menu Accessible by pressing the corresponding Operational Button from most menus and screen displays. This menu 
provides access to instructions and explanations for user settings, Operating States, Status Icons, manufacturer’s 
web address, technical support phone number and service agent contact information.
Table 8. 
Table 9. 
CONTROL SYSTEM MENUS.OPERATING STATES. 
						

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Differential Settings
Adjustable  user  setting(s)  1°F  to  20°  range;  factory  default  is  2°F. 
The water heaters covered in this Instruction Manual will have 3, 6 or 
9 heating elements. Each group of 3 heating elements is one “Bank” of 
heating elements. Heating elements are energized in Banks of 3. Each 
Bank  of  heating  elements  will  have  a  Differential  Setting  associated 
with it. Differential Settings are located in the Temperatures Menu.
There is a 1st Differential Setting on all models. There will be one 
additional Differential Setting visible/adjustable for each additional 
Bank of (3) heating elements.
Operating Sequence
With an Operating Set Point of 120°F and all Differential settings at 2°F  
the On/Off sequencing of heating element Banks would be as follows:
BANK NUMBER DIFFERENTIAL 
SETTING TURN ON 
TEMP TURN OFF 
TEMP
Bank 1 2°F118°F120°F
Bank 2 2°F116°F118°F
Bank 3 2°F114°F116°F
Tank Temperature
Non adjustable information display. Current water temperature as sensed 
by the control system from the immersion Temperature Probe.
Tank Probe Offset
User adjustable setting -5°F to +5°F range; factory default is 0°F. If the 
current Tank Temperature is sensed (from the immersion Temperature 
Probe)  at  120°F  and  the  offset  is  adjusted  to  -5°F  the  control  system 
would calibrate or “offset” the Tank Temperature to 115°F. Heating cycles 
would then start/stop based on the calibrated Tank Temperature.
Used to calibrate for slight differences in control system temperature 
sensing. This can improve the precision of temperature control in 
the  storage  tank  and  at  points  of  use.  This  feature  can  also  be 
used  to  compensate  for  building  recirculation  loops  (hot  water 
returning to the storage tank) that may cause the heating cycle to 
terminate prematurely.
TEMPERATURE SETTINGS
The  Operating  Set  Point  and  the  Differential  Settings  are  adjusted 
in the Temperatures Menu. The following instructions explain how to 
adjust these user settings and navigate the control system menus.
ACTION DISPLAY
From the Desktop Screen, press the Operational Button underneath “MENU” 
to enter the Main Menu.
Notice how the text above the Operational Buttons on the display changes 
as you navigate through the various menus and screens. 
With  Temperatures  selected  (highlight  in  black)  in  the  Main  Menu,  press 
the  Operational  Button  underneath  “SELECT”  to  enter  the  Temperatures 
Menu.
If Temperatures is not selected use the Up and Down buttons to select this 
menu item.
With  the  Operating  Set  Point  selected  in  the  Temperatures  Menu,  press 
the Operational Button underneath “CHANGE” to activate the adjustment 
mode for this menu item.
Press  the  Up  and  Down  buttons  to  adjust  the  Operating  Set  Point  to  the 
desired setting.
Press  the  Operational  Button  underneath  “UPDATE”  to  confirm  the  new 
setting. Press the Operational Button underneath “CANCEL” to discard the 
new setting and retain the previous setting.
The new Operating Set Point value should now be displayed as the current 
value.
NOTE: Use this same procedure to adjust the Differential settings and the 
Tank Probe Offset in the Temperatures Menu.
This same procedure is used to change user settings in other control system 
menus.  
						

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HEATER STATUS MENU
This  menu  displays  non  adjustable  operational  information.  This 
menu contains more information that can be displayed on one screen 
of the LCD display. Use the Up & Down Buttons to navigate to the 
bottom of this menu.
Top of Menu
Bottom of Menu
Status 
Displays  the  current  Operating  State  of  the  control  system.  IE: 
Heating, Standby, Fault see Table 8.
Element Banks On
Displays the current number of heating element Banks the control 
system has energized. Each Bank of elements contains 3 heating 
elements.
ECO Contact
Displays  the  current  state  of  the  ECO  high  temperature  limit 
switch  contacts.  The  ECO  switch  is  located  inside  the  immersion 
Temperature Probe (two red wires).
Enable / Disable 1 & 2
Displays the current state, open or closed, of the two Enable/Disable 
circuits  (J7  socket  on  the  CCB  -  see  wiring  diagrams)  provided 
for  external  supervisory  controls  such  as  building  EMS  (Energy 
Management System). Both of these Enable/Disable circuits must be 
closed to “enable” heating operation. If either Enable/Disable circuit is 
open for any reason heating operation will be “disabled.” There is a plug 
with two jumper wires installed from the factory in the CCB J7 socket to 
enable heating operation when external controls are not in use.
Service	Note:  If  a  supervisory  control(s)  is  used  to  enable/disable 
heating operation, install field wiring between the J7 socket on the CCB 
and  a  set  of  “dry  contacts”  on  the  external  control  per  all  applicable 
building  codes.  This  is  a  switching  circuit  only:  DO  NOT  apply  any 
external voltage or connect any load (IE: relay coil) to either circuit. 
Element Bank On
Displays the on/off status of each Bank of heating elements. Yes = 
On, No = Off.
Alarm Condition
Displays the status of the user definable Alarm Output function - see 
Alarm Output Setup Menu. Yes = alarm condition has been met, No 
= alarm condition has not been met. 
Alarm Relay Output
Displays the state of the normally open contacts of the Alarm Output 
relay. This relay (J3 contacts on the CCB) is used for building EMS 
(Energy Management System) notification of operational conditions 
such as Fault conditions.
ECONOMY MODE SETUP MENU
This  menu  contains  settings  used  to  establish  an  “Economy  Set 
Point” and “Economy Mode” operating periods. This control system 
feature can help reduce operating costs during unoccupied, low load, 
or peak demand periods.
Desktop Screen During Economy Mode
Economy Mode Setup Menu
Setpoint Adjustment
Adjustable  user  setting  (2°F  to  50°F  -  factory  default  is  20°F)  the 
control system uses to calculate the “Economy Set Point.” The Economy 
Set Point = normal Operating Set Point minus the programmed Setpoint 
Adjustment  value. The  Economy  Set  Point  is  the  water  temperature 
the control system maintains during programmed Economy Mode time 
periods. “Economy Set Point” is displayed instead of “Operating Set 
Point” and “Economy Mode” appears beneath the current time on the 
Desktop Screen during Economy Mode time periods.
Current Time
Seven Day 24 hr clock. Use this menu item to set the current time 
and  day  of  the  week.  Current  day  and  time  are  not  set  from  the 
factory.  “Clock  Not  Set”  will  be  displayed  on  the  Desktop  until  the 
time/day has been initially set.
Heater In Economy Mode
Displays  whether  the  control  system  is  currently  operating  in 
Economy Mode or not.
Daily Operating Mode (Sun - Mon - Tue - Wed - Thu - Fri - Sat)
Seven daily sub menus are listed at the bottom of the Economy Mode 
Setup menu. There are 3 Operating Modes in each sub menu;  
						

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“Normal Operation All Day” - “Economy Mode All Day” and “Normal 
Operation Between.” Only one Operating Mode can be active, the 
factory default is Normal Operation All Day.
Normal	Operation	 All	Day:	 When this operating mode is active the 
normal Operating Set Point is used for the entire day.
Economy	 Mode	All	Day:	 When this operating mode is active the 
Economy Set Point is used for the entire day.Normal	 Operation	 Between: When this operating mode is active 
there  will  also  be  start  and  stop  times  to  program.  The  normal 
Operating Set Point is used between the programmed start and stop 
times and the Economy Set Point will be in effect during the rest of 
the day. There is one start time and one stop time event per day.
ECONOMY MODE SETTINGS
Setpoint Adjustment Value
ACTION DISPLAY
From the Desktop Screen, press the Operational Button underneath “MENU” 
to enter the Main Menu.
Notice how the text above the Operational Buttons on the display changes 
as you navigate through the various menus and screens. 
Use the Up/Down buttons to select (highlight in black) the Economy Mode 
Setup menu from the Main Menu. Press the Operational Button underneath 
“SELECT” to enter the Economy Mode Setup menu.
Use the Up/Down buttons to select (highlight in black) Setpoint Adjustment. 
Press  the  Operational  Button  underneath  “CHANGE”  to  activate  the 
adjustment mode for the Setpoint Adjustment value.
Use the Up/Down buttons to change the Setpoint Adjustment to the desired 
value. The Setpoint Adjustment value is adjustable from 2°F to 50°F. The 
factory default is 20°F.
Notice how the text above the Operational Buttons on the display changes 
to “UPDATE” & “CANCEL” when the adjustment mode is activated and how 
the current value is outlined rather than highlighted in black.
Press the Operational Button underneath “UPDATE” to enter and confirm 
the  new  value.  Pressing  the  Operational  Button  underneath  “CANCEL” 
would discard the new value and retain the previous value.
The  new  Setpoint  Adjustment  value  should  now  be  displayed  as  the 
current value. 
						

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ECONOMY MODE SETTINGS
Time Clock Settings
ACTIONDISPLAY
From the Desktop Screen navigate to the Economy Mode Setup menu.
Use  the  Up/Down  buttons  to  select  (highlight  in  black)  Current  Time  sub 
menu.  Press  the  Operational  Button  underneath  “CHANGE”  to  enter  the 
Current Time sub menu. 
Use the Up/Down buttons to select the “Weekday” setting.
 
Press  the  Operational  Button  underneath  “CHANGE”  to  activate  the 
adjustment mode for this setting.
Press  the  Up  and  Down  buttons  to  adjust  the  Weekday  setting  to  the 
current day.
Notice how the text above the Operational Buttons on the display changes 
to “ACCEPT” & “CANCEL” when the adjustment mode is activated and how 
the current setting is outlined rather than highlighted in black.
Press the Operational Button underneath “ACCEPT” to enter and confirm 
the  new  setting.  Pressing  the  Operational  Button  underneath  “CANCEL” 
would discard the new setting and retain the previous setting.
Use  the  Up/Down  and  the  CHANGE/ACCEPT  Operational  Buttons  to 
individually select and change the remaining time settings (Hour, Minutes, 
AM/PM) to the current time in the same way as outlined above.
When finished making changes press the Operational Button underneath 
“BACK”  to  confirm  all  new  settings  and  update  the  control  system.  The 
display will automatically return to the Economy Mode Setup menu.
The new settings should be displayed as the Current Time. 
						

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ECONOMY MODE SETTINGS
Daily Operating Mode Settings
ACTIONDISPLAY
Economy Mode All Day:
From the Economy Mode Setup menu use the Up/Down buttons to select 
(highlight  in  black)  the  Daily  sub  menu  for  “Sun.”  Press  the  Operational 
Button underneath “CHANGE” to enter this menu. 
Use the Up/Down buttons to select (highlight in black) the “Economy Mode 
All Day” setting.
Press  the  Operational  Button  underneath  “SELECT”  to  change  from  the 
factory default Normal Operation All Day setting to the Economy Mode All 
Day setting.
Press the Operational Button underneath “BACK” to confirm the new setting 
and update the control system. You will be returned to the Economy Mode 
Setup menu. The new setting should now be displayed for Sun.
Normal Operation Between:
From  the  Economy  Mode  Setup  menu  use  the  Up/Down  and  CHANGE 
buttons to enter the Mon sub menu.
Use the Up/Down buttons to select (highlight in black) the “Normal Operation 
Between”  setting.  Press  the  Operational  Button  underneath  “SELECT”  to 
change  the  operating  mode  for  Monday  to  Normal  Operation  Between. 
Note  that  when  this  setting  is  selected  Start  and  Stop  time  user  settings 
appear on the display.
Use the Up/Down buttons to navigate between the Start and Stop time Hour, 
Minutes and AM/PM settings.
With each item selected press the Operational Button underneath “SELECT” 
to activate the adjustment mode for each setting. Use the Up/Down buttons 
to change the value to the desired setting.
Press the Operational Button underneath “ACCEPT” to enter the new setting 
or “CANCEL” to discard the new setting and retain the previous setting.
Press  the  Operational  Button  underneath  “BACK”  to  confirm  the  settings 
and update the control system. You will be returned to the Economy Mode 
Setup menu. The new settings should be shown for Mon.   
						

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ALARM OUTPUT SETUP MENU
Permits  user  to  set  the  condition  (from  a  list  of  options)  for  when 
the  CCB’s  integral  alarm  output  relay  will  be  energized.  Alarm  relay 
connections  (common,  normally  open,  normally  closed)  are  located 
on  the  J3  terminal  strip  on  the  CCB. Alarm  output  relay  contacts  are 
capable of switching 1 amp maximum at 120 VAC.
The alarm relay operates in the background according to the settings 
in this menu and is not capable of disabling water heater operation. 
The  alarm  relay  is  used  for  external  notification/verification  of 
various operational conditions such as fault conditions and heating 
mode  status.  This  relay  can  be  used  with  building  EMS  (Energy 
Management System) and other external supervisory controls.
Output Function 
Adjustable  user  setting.  Available  options  for  the  Alarm  Output 
Function setting are:
Heating	Mode: Used for heating mode on/off status notification.
Enable	/	Disable	 Closed:	 Used for notification and/or verification of 
the enable/disable circuits open/closed status. There are two enable/
disable circuits available for external supervisory control(s) at the J7 
socket on the CCB - see wiring diagrams. Enable/disable circuit(s) 
status can be viewed in the Heater Status Menu.
Temp	 <	Heater	 SP: Used for external notification when current tank 
temperature drops below Operating Set Point. 
Temp	 <	Alarm	 SP:	Used for external notification when current tank 
temperature drops below programmable Alarm SP. 
Fault	 or	Alert:  Used  for  external  notification  whenever  a  Fault  or 
Alert condition is active.
Fault:	 Used for notification whenever a Fault condition is active.
Disabled: Disables the Alarm Relay Output Function.
Alarm	 SP:	Adjustable user setting (90°F to 190°F) the control system 
uses for the “Temp < Alarm SP” function described above. This setting 
has no effect with any other Alarm Output functions.
Alarm	 Output	 Settings: Changing the user settings in this menu is 
done using the same methods for changing the Operating Set Point.
Service	 Note: Adjustable user settings in the Alarm Output Setup 
menu are unaffected by Restore Factory Defaults.
DISPLAY SETTINGS MENU
Permits  user  to  set  display  options  for  viewing  information  on  the 
UIM’s LCD screen.
Temperature Units 
Adjustable  user  setting  that  changes  temperature  units  display  to 
Celsius °C or Fahrenheit °F.
Backlight Delay
Adjustable  user  setting  that  determines  how  long  the  UIM’s  LCD 
backlight remains illuminated after a key has been pressed. Available 
settings are; Always Off, 10, 30 or 60 seconds and Always On.
Contrast
Adjustable  user  setting  to  adjust  the  UIM’s  LCD  screen  contrast 
between text and background.
Display Settings
Changing  the  user  settings  in  this  menu  is  done  using  the  same 
methods for changing the Operating Set Point.
Service Note
 Adjustable user settings in the Display Settings menu are unaffected 
by Restore Factory Defaults.
HEATER INFORMATION MENU
This menu displays non adjustable operational information.
TOP OF MENU
BOTTOM OF MENU 
						

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Elapsed Time
Total accumulated time the control system (water heater) has been 
energized.
Total Heating Time
Total accumulated time the control system has been in the heating 
mode. IE: any heating elements have been energized.
Bank # Cycles
Total accumulated count of heating cycles for each Bank of heating elements.
Bank # On Time
Total  accumulated  heating  on  time  for  each  Bank  of  heating 
elements.
CCB Version
Software version for Central Control Board.
UIM Version
Software version for User Interface Module.
CURRENT FAULT / ALERT MENU
This menu displays non adjustable operational information. With the 
Fault History sub menu selected in Main Menu; press the Operational 
Button  underneath “SELECT” to display the current Fault or Alert 
message.  If  there  is  not  a  Fault  or Alert  condition  currently  active 
“(none)” is displayed to the right of this menu.
Main Menu - Current Fault Selected
FAULT HISTORY MENU
Fault History Menu
This menu displays non adjustable operational information. The 
control  system  records  and  stores  the  last  9  Fault  and  Alert 
messages in chronological order in this menu. The most recent 
will be at the top of the list. A time stamp is displayed below each 
listed Fault and Alert message showing when the Fault or Alert 
condition occurred.
The Fault History is useful when dealing with intermittent operational 
problems or when the customer has reset the control system prior 
to a service agent’s arrival.
With  a  Fault  or  Alert  item  selected  press  the  Operational  Button 
underneath  “VIEW”  to  display  the  details  for  the  Fault  or  Alert 
message.  The  Fault/Alert  message  screen  displays  a  brief 
description of the condition, contact information and access to the 
Advanced service information sub menu.
Current / History Fault Message
FAULT OCCURRENCE MENU
Total  accumulated  number  each  individual  Fault  condition  has 
occurred  is  displayed  in  this  menu.  This  running  total  of  Fault 
Occurrences can be useful in determining which (if any) operational 
problems have been persistent.
Fault Occurrence Menu
RESTORE FACTORY DEFAULTS MENU
This  control  system  menu  allows  the  user  to  restore  most  of  the 
control system’s user settings to their factory default settings. User 
settings in the Alarm Output Setup and Display Settings menus are 
unaffected by executing Restore Factory Defaults.