8.2 Main Power Board
The main power board is the power source for all electrical components in the system. The power cord
supplies 120 volts to the main power board and then is distributed to the compressor, condenser fan, and
interior lights.
The 12 volt DC control circuit is also supplied from the main power board. These components include
the user interface board, thermistors, compartment fans, and heater / fans.
WARNING: HIGH VOLTAGE DANGER OF ELECTRICAL SHOCK OR DEATH.
It is EXTREMELY IMPORTANT TO READ THIS if there is a need to apply power to the
main power board for diagnosing.
DO NOT TOUCH the lower-top half of the main power board when energized. This is the
side opposite from cable connections and contains the transformers, heat sinks, and capaci-
tors.
SEE FIGURE BELOW
Do Not Come in Con-
tact With This Area
When Power is Ap-
plied
47
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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