Sub-Zero 315I Technical Service And Parts Manual page 59

Model 315I (UC Ice Maker)
PROBLEM
D. Ice machine operates,
makes ice, but does not
fill bin
E. Cubes are too big
F. Cubes are too small,
possibly white at bottom
G. Cubes are partially
formed - ragged edges
POSSIBLE CAUSE
Bin takes 24 - 36 hours for initial fill
High room ambient temperature
High water temperature
Vents in kickplate obstructed
Dirty condenser
Bin drain restricted causing rapid
melting in bin
Cube size control set too cold
Cube size control set too warm
Not enough water
Cube size control stuck closed caus-
ing rapid ice making cycles
Spray jets partially clogged with min-
eral scale
7-5
Troubleshooting Guide
TEST / ACTION
This is normal. Heavy/frequent ice con-
sumption by customer will slow the refill
process. Advise customer.
Ambient temperatures should not exceed
100°F/38°C. Ice machine works best in
ambient between 60°F/16°C - 90°F/32°C.
Advise customer.
Water temperatures should not exceed
100°F/38°C. Ice machine works best with
50°F/10°C - 80°F/27°C water. Advise
customer.
Move/clear obstruction.
Clean condenser.
Clean out bin drain and/or check installa-
tion for kinks in drain line.
See Cube Size Control Adjustment
instructions in Maintenance, Cleaning and
Adjustment section of manual.
See Cube Size Control Adjustment
instructions in Maintenance, Cleaning and
Adjustment section of manual.
a. Check water supply line for kinks or
restrictions.
b. If supply line has a filter, it may be
restricted and/or need changing.
c. Check screens in water valve for
restrictions. - Clean screens or
replace valve.
d. House supply water pressure too low.
Pressure must be 20 - 80 p.s.i.g., con-
stant. Advise customer.
e. Check for water leak at reservoir.
Repair or replace parts.
f. Check for torn or mis-positioned cur-
tain causing water leak into bin.
Reposition or replace curtain.
Check/replace control
See Cleaning the Ice Making System
instructions in Maintenance, Cleaning and
Adjustment section of manual.
#3757320 - Revision B - August, 2005