Power Disconnect Switch; Inverter - Viking VDSC367 Service Notebook

Disassembly
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless
test procedures require power to be connected. Ensure all ground wires are connected before certifying unit as
repaired and/or operational.

Power Disconnect Switch

The unit has a rocker switch, located in the
upper right corner of the unit, that allows
power to the unit to be turned "OFF" without
removal of the unit.
! DANGER
ON/OFF switch has 120 vac connected
to one side of switch at all times, remove
power with circuit breaker box when
removing switch.
1. To access the power disconnect switch,
remove the upper air grill assembly (see
Air Grill Removal section, Page 13). The
power disconnect is now accessible on
the right side.
Verify contacts 4-5 open when the switch
is in the "0" position and contacts 4-5 close
when in the "|" position. 120 VAC should be
measured when in the "0" position and 0 VAC
should be measured when in the "|" position.
2. Switch bracket is mounted on electronics
box with two 1/4" hex head screws.
3. Reverse procedure to reinstall.
16
! WARNING

Inverter

The Compressor is operated by a Inverter
that varies the voltage to the compressor.
This is determined by the frequency input
from the low voltage board
1. To access the inverter, remove upper
air grill assembly, remove control panel
assembly (see Air Grill and Control Panel
Removal sections, Page 13).
2. Remove the control box in order to gain
easy access to the door hinge area for
service. There are 4 ¼" hex screws (2
on each side) holding the control box to
the refrigerator housing. Remove these
screws.
3. Unplug the 15-pin Molex power plug (A),
as well as the 2-wire converter frequency
cable (B) and the 3-wire thermistor plug
(C).
Molex
B
Molex A
Molex C
©2012 Viking Preferred Service