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Service Diagnostics and Procedures–Disassembly
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power to unit using power
switch before servicing. Wires removed during disassembly must be replaced on proper terminals to insure
correct earth ground and polarization. After servicing, reconnect power using power switch.
Defrost Heater
The unit use a heater to help remove ice build
up during the defrost cycle. When the defrost
terminator closes, voltage is supplied to the heater
via the control board.
Defrost Heater access:
1. Open freezer door and remove shelves, basket
and drawers (see freezer drawer, page 44).
2. Remove basket supports, upper and lower
freezer rails (see upper and lower freezer rail
sections, pages 44-45).
3. Remove upper back panel (see upper back
panel section, page 45).
4. Remove freezer panel (see freezer panel
section, page 46).
5.
Remove evaporator fan (see evaporator
section, page 46).
6. Disconnect heater wiring.
Wiring
© 2010 Viking Preferred Service
WARNING
Wiring
7. Remove heater clips.
Defrost Heater
Clips
8. Repair or replace heater.
9. Reverse procedure to reinstall.
Clips
47
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