8.1 User Interface Board
The user interface board is located inside the interior control panel. The front of the interface board is
covered with the decorative overlay showing the display and keypad features.
Please refer to the “User Interface Quick Reference Sheet” for a description of settings and functions in
this manual.
The user interface board is a 12 volt DC circuit that interfaces: keypad & display functions, compart
-
ment temperatures, set-points, light functions, alarms, message center, Sabbath mode, error codes, and
service diagnostics.
The user interface board is factory programmed and is not adjustable or re-programmable in the field.
See the Software Section for further reference.
Located on the back side of the user interface board are the electrical connections for the communication
cable and both upper and lower thermistor cables. A run time battery is also located on the rear of the
user interface board. This battery supplies power to the memory during off periods. Located on the bat
-
tery face, is a sticker with the software version written in ink (See figure 12.36).
The user interface board is only available as an assembly piece which includes the control housing and
overlay. This is because of possible static issues that might possibly damage the user interface.
SEE PHOTO SECTION FOR REFERENCE TO ABOVE MENTIONED FIGURES
8.1.1 Replacing the User Interface Board
1) There are two (2) locater holes in the front of the control housing (See figure 12.35).
2) Use a 5/16” nut-driver to loosen the screws, do not remove, these screws can be used to re-locate
the control housing when re-installing.
3) After the screw have been loosened, pull the housing forward and let suspend.
4) Reach behind the housing and disconnect the communication and thermistors cables using thumb
pressure.
5) Remove the cables from the nylon clips that secure the cables to the control housing.
6) Reverse the above process to re-install.
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2010 - Viking Preferred Service
SMR-0005
Summary of Contents for DFUW244CL
Page 6: ...Section 1 Introduction to Dual Zone 2010 Viking Preferred Service SMR 0005 ...
Page 10: ...Section 2 Dual Zone Characteristics 2010 Viking Preferred Service SMR 0005 ...
Page 16: ...Section 3 Refrigeration Systems 2010 Viking Preferred Service SMR 0005 ...
Page 27: ...Section 4 TruProtect Control Diagnostics 2010 Viking Preferred Service SMR 0005 ...
Page 30: ...Section 5 Mechanical System Components 2010 Viking Preferred Service SMR 0005 ...
Page 38: ...Section 6 Structural Components 2010 Viking Preferred Service SMR 0005 ...
Page 42: ...Section 7 Electrical Components 2010 Viking Preferred Service SMR 0005 ...
Page 50: ...Section 8 Control Components 2010 Viking Preferred Service SMR 0005 ...
Page 54: ...Section 9 Wiring 2010 Viking Preferred Service SMR 0005 ...
Page 57: ...52 J110 J111 J112 J2 J1 J4 J7 J3 9 3 Main Power Board 2010 Viking Preferred Service SMR 0005 ...
Page 58: ...9 4 User Interface 53 2010 Viking Preferred Service SMR 0005 ...
Page 59: ...Section 10 Reference Charts 2010 Viking Preferred Service SMR 0005 ...
Page 64: ...Section 11 Trouble Shooting Guide 2010 Viking Preferred Service SMR 0005 ...
Page 68: ...Section 12 Reference Photos 2010 Viking Preferred Service SMR 0005 ...
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