A.O. Smith GP 6 40YPC T 100 User Manual

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 1.  The temperature scale defaults to Fahrenheit (°F).
 2.  To change to Celsius (°C), press the two temperature adjustment buttons at the same time for more  

 

 

than five (5) seconds but less than 10 seconds to enter the Temperature Scale Selection mode. In this    

 

mode the currently active temperature scale indicator (°F or °C) will start to flash. When in this mode a   

 

button press of either the red up arrow, or the blue down arrow button will cause the control to toggle    

 

the temperature scale between °F and °C (Figure 22).

 3.  Once the selection has been made the user may exit this mode by again pressing the two temperature   

 

adjustment buttons at the same time for more than two (2) seconds but less than five (5) seconds. The   

 

control will also time out five (5) seconds after the last button press and return to the normal operational  

 mode.

  •   The control system of this water heater monitors inputs and outputs.
  •  When the system determines a fault condition is present it will show the   

 

 

 

 

 

fault on the display.

  •  Depending on the fault, the system may continue to operate or enter a    

 

 

 

 

 timed 

lockout.

  •  Lockout time varies depending on the fault.
  •  When the lockout time expires, if the fault has been corrected, the system                                                                  

 

will attempt normal operation.

  •   The system will display the last eight (8) fault codes.
  •  The system will display how many days ago each fault occurred,  up to 14 days.                                      

 

Note: A “14” indicates that the fault occurred 14 or more days ago. Interrupting                                  

 

 

the power restarts the date code at “00”.

  •  User must enter Field Service Mode to view information.
  •  Current water temperature, measured at gas valve/thermostat will also be  

 

 

 

 

 displayed 

in 

Entering Field Service Mode:

 1.  Press and hold both temperature adjust buttons (Figure 22).
 2.  Hold both buttons as control passes from the set point display to Temperature Scale Selection menu.    

 

Continue to hold buttons until “CHECK” icon is displayed, then release buttons. This will take 10 to 15    

 seconds.
 3.  The display will show the current water temperature, “POWER” icon, “CHECK” icon and will flash any    

 

current fault icons. The backlight will always be displayed while in the Field Service Mode.

Gas Control Valve/Thermostat Settings

COOLER

HOTTER

Electronic Control Display