© 2009 Viking Preferred Service
49
Ice Maker (continued)
cube release. Mineral content can also restrict
saddle valves. Verify water supply line is “ON”,
water pressure is not below 20 psi, saddle valve
is fully open clear restrictions by fully closing and
opening valve to dislodge sediment (if necessary,
remove valve and enlarge pierced hole to 3/16”
diameter with a drill and reinstall saddle valve)
ensure water line to unit is not pinched/kinked/
clogged, ice is not present in inlet tube blocking
water flow, water pressure is not above 120 psi.
Water fill can be increased by turning the
adjustment screw counterclockwise and decreased
by turning the screw clockwise. One half turn will
adjust the fill by approximately two thirds of an
ounce. If supply is OK replace water valve. If no
voltage is present, verify harness. If OK, replace
module.
Thermal Cut Out (TCO)
The TCO is a safety device and must NOT be
bypassed. If the TCO is found to be electrically
open, this indicates an overheat in the ice maker
and the ice maker must be replaced.
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.
Component Testing–Ice maker
Module Ohmmeter Checks with No Power to Ice maker and Ejector Blades in End of Cycle
Test Points Component Module Position Ohms
L-H Mold & Heater Attached to Support 264
L-M Motor Separate from Heater 16,100
Module Voltage Checks with Motor or Test Light Power to Ice maker
Test Points Component Line Voltage 0 Volts
T-Module Power On Power Off Power Off
T-H Bimetal Open Closed
L-H Heater On Off
L-M Motor On Off
N-V Water Valve On Off
Service Diagnostics and Procedures–Disassembly
TCO
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