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Problem Possible Cause Remedy
[]
Freeze cycle time is
long. (continued)
n) Control Board .Float switch
connection loose (K5).
. Check and reconnect.
.
Defective. . See "IV.B. Control Board
Check."
[]
Harvest cycle time is
long.
a) Water Supply .Water temperature too
cold.
. Increase temperature.
b) Thermistor . Disconnected, loose,
or defective.
. Connect, secure, check.
See "V.L. Removal
and Replacement of
Thermistor" and "IV.E.
Thermistor Check."
c) Control Board . Not reading
thermistor.
. Check and replace. See
"IV.E. Thermistor Check."
.
Sending voltage to
liquid line valve (if
applicable) in harvest.
. Check and replace. See
"IV.B. Control Board
Check."
d) Inlet Water Valve . Clogged. . Clean or replace.
e) Evaporator . Scaled up. . Clean.
.
Damaged. .Replace.
f) Hot Gas Valve . Does not open, or
opens partially.
. Check and replace.
g) Expansion Valve . Wide open in harvest. . Check and replace.
. Bulb loose. . Secure bulb.
h) Water Regulating Valve
(water-cooled model)
. Open during harvest. . Adjust or replace. See
"V.J. Adjustment of Water
Regulating Valve."
i) Liquid Line Valve (if
applicable)
. Open during harvest
cycle.
. Check and replace.
4. Abnormal Ice
Problem Possible Cause Remedy
[]
Small cubes. a)Pump-Out Check Valve . Dirty or worn and
leaking by.
. Clean or replace.
b)Ice Cube Guide . Out of position.
Circulated water falls
into bin.
. Place in position.
c) Water System . Water supply line too
small; requires 3/8"
OD line dedicated per
machine.
. Increase water line size.
.
Water lter clogged or
ow rate too small.
. Replace lter or install a
higher ow rate lter.
d)Inlet Water Valve . Dirty mesh lter or
orice.
. Clean.
e)Pump Motor . RPM too slow. . See chart .[5].
f) Control Board . Defective. . See "IV.B. Control Board
Check."