4.1 Diagnostics Mode
Enter the diagnostics mode by pressing and holding the “Warmer” keypad while pressing the “Colder”
keypad four (4) times within five (5) seconds. The display will flash both the software and firmware ver-
sion.
At this time depress the “Set” keypad once more. This will enter the Service Mode where individual
components can be tested individually.
Continue to press the “Set” keypad one time to access the test mode for each specific component. The
status of each component can then be tested by pressing either the “Warmer” or “Colder” button to cycle
each component. The “Warmer” keypad will turn each component on and the “Colder” keypad will turn
them off.
When testing the status of each thermistor the display will only show the status of the current condition.
When testing the status of the door reed switch a magnet held between the “On/Off” keypad and display
will show the status. The “Warmer” / “Colder” keypad serve no purpose for this test.
The Service Mode will time out and return to the main display mode after five (5) minutes if keypad is
left idle.
Please refer to the following chart for Test Number, Component, and Status.
Test #
Component Description
Available Status Indicators
OK
Off / Open
On / Short
0
Upper Thermistor
0-
00
00
1
Lower Thermistor
1-
10
11
2
Compressor
n/a
20
21
3
Condenser Fan
n/a
30
31
4
Upper Compartment Fan n/a
40
41
5
Lower Compartment Fan n/a
50
51
6
Upper Heater / Fan
n/a
60
61
7
Lower Heater / Fan
n/a
70
71
8
Door Sensor (use magnet) n/a
80
81
Note: n/a on chart means that component must be turned off/on to check performance
To exit the diagnostics mode repeat the above process or let the User Interface time out of the mode after
five (5) minutes of no keypad functions.
23
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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