© 2009 Viking Preferred Service
36
Service Diagnostics and Procedures
Troubleshooting Guide
Below and on the following page are some general guides should a problem be detected. Please refer to the
test procedures in this manual to determine the defective component.
Problem
Probable Cause
Correction
Unit does not operate.
The unit is unplugged.
Plug in the unit.
Breaker is tripped or fuse is
blown.
Reset breaker or replace fuse. Check to make sure there
is not a short in the electrical circuit.
Ice machine selector switch is in
the “OFF” position.
Set the rocker switch on the grille of the ice machine to
the “ON” position.
The evaporator and/or bin
thermistors are out of
specification.
Test the thermistor in question (see Thermistors
section). Replace any thermistor that is out of
specification
Unit operates but does not
produce any ice.
The unit has just been started and
it has been less than six hours.
Ice produced when the unit is initially started will melt off
in the bin. Ice will accumulate in the bin. In six hours, there
can be a few cubes in the bin. This is normal
operation.
Typical ice production cycle can
take up to one and a half hours.
Initial startup cycles can be
longer.
Check the unit in 24 hours for ice accumulation in the bin.
The selector switch is in the
“OFF” or “CLEAN” position.
Set the rocker switch on the grille of the ice machine to
the “ON” position.
Build up of deposits on
evaporator plate.
See “Cleaning Your Ice Machine” section for cleaning the
unit for proper operation.
Distributor tube is restricted or
not installed correctly.
See “Cleaning Your Ice Machine” section for cleaning the
unit for proper operation.
Grid-cutter is unplugged.
Plug in the grid cutter so that ice slabs can be cut into
cubes.
No water in the reservoir.
Make sure that the reservoir drain plug is installed. Check
the water line to the unit to make sure it is on and that
there are no restrictions or kinks in the line. Check all
filters to make sure they are not restricted or plugged.
Inadequate drain system.
Restriction in drain lines will cause ice in the bin to melt.
If using a gravity drain, make certain there are no kinks or
restrictions
in the drain lines. If using a drain pump, check the inlet
screen, discharge line, and vent line for any build-up or
restrictions.
Condenser fan air flow is re-
stricted.
Make certain the grille in the front of the unit is free and
open for proper air circulation.
Check and clean the condenser coil by removing the
grille in the front of the unit. Clean the condenser with a
vacuum and brush attachment.
Room and/or water temperature
is too warm.
Move the unit to an area where ambient temperature is
below 90 degrees F. The unit should not be placed next
to a heat source such as an oven. Check for cold water
connection.
Leaking drain valve.
See “Cleaning Your Ice Machine” section for cleaning the
unit. This will also dissolve
and flush out foreign material in the drain valve causing it
to leak. If this does not stop the drain valve from leaking,
the drain valve will need to be replaced.
