© 2010 Viking Preferred Service
66
Service Diagnostics and Procedures
Float Switch
The unit uses a float switch in conjunction with the
drain pan heater to vaporize condensate created
from the refrigerator cooling process. The switch
is normally open and closes as the water level in
the pan rises thus energizing the drain pan heater.
When the water is vaporized the switch opens
removing power from the drain pan heater.
To access the float switch, remove the lower access
panel and the float switch is now accessible. Verify
the switch reads infinite resistance when in the
down position and 0
Ω
in the up position. If the
switch does not open or close properly, replace the
float switch.
Water Valve–Non-Dispenser Model
The Non-Dispenser Side-by-Side models utilize a
single coil water valve to fill the ice maker when
required.
Bottom View
Dual Water Valve System–Dispenser
Model
On the Dispenser models, a dual water valve system
in utilized. When the water dispenser is activated,
120 VAC is sent to both the primary and secondary
coils shown on page 67. The primary coil (water)
opens and allows water to flow through the water
filtration system Then back into the secondary valve
and then out (water) to the door dispenser.
When the ice maker calls for a fill cycle, then same
procedure occurs except water is sent to the
filter, into the secondary valve and then out (ice) to
WARNING
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.
Float Switch
Water Valve
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