Icemaker Produces Too Much Ice; Icemaker Produces Hollow Cubes; Icemaker Produces Small Cubes - Sub-Zero 700-3 BASE Technical & Service Manual

Integrated
PROBLEM
(Continued)
K. No Ice, "ICE" Displayed, but
not Flashing
(NOTE: The Icemaker system
is disabled for 45 minutes after
each harvest.)
L. No Ice and "ICE" not
Displayed
M. Icemaker produces Too
much ice
N. Icemaker Produces Hollow
Cubes
O. Icemaker Produces Small
cubes
3 Series
(700- BASE)
POSSIBLE CAUSE
Icemaker System Fault
a. Disconnected or damaged electrical
connections at icemaker or water valve.
b. Defective icemaker
c. Defective icemaker
d. Disconnected or damaged electrical
connections at icemaker
e. Icemaker switch disconnected or faulty
f. Electrical connection at control board or
control board defect
Icemaker System Not Energized
Ice Level Arm/Linkage Bent or Broken
Icemaker Faulty
Freezer Too Cold, Cycles Icemaker Too
Soon
Not Enough Thermal-Mastic on
Icemaker Thermostat
Icemaker Thermostat Fault
Water Supply Problem
Icemaker Not Level
Low Fill Adjustment on Icemaker
8-13
Troubleshooting Guides
TEST / ACTION
Press ICE key to OFF, then to ON to bypass 45
minute dwell. Then, depress icemaker switch &
manually start icemaker with jumper between
ports "T" & "H". Watch cycle of icemaker and
see #1, #2 & #3 below.
1. If icemaker motor starts and finishes cycle:
a. Check for 115V at valve during fill mode. If
no 115V, inspect connections at icemaker
and valve. Repair or replace connection.
b. Check for 115V from icemaker during fill
mode. If no power, replace icemaker.
2. If icemaker motor starts but does not finish
cycle:
c. Replace icemaker.
3. If icemaker motor does NOT start:
d. Check for 115V to icemaker. If no power,
repair electrical connection.
e. Check power to/from icemaker switch.
Repair connection, replace defective switch.
f. Check for 115V at control board (J7-5). If
no power, replace control board. If power,
repair connection.
Press ICE key. " ICE" should appear on
LCD.
Inspect ice level arm, shut-off arm and link-
age. Replace defective parts.
With ice level arm in UP/OFF position,
Pressing ICE key to OFF, then ON to
bypass 45 minute dwell. Then, depress ice-
maker switch & manually start icemaker with
jumper between ports "T" & "H". If icemaker
motor starts with arm in the UP/OFF posi-
tion, replace icemaker.
See PROBLEM "H" earlier in
Troubleshooting Guide.
Inspect icemaker thermostat, apply more
Thermal-Mastic to thermostat.
Replace Thermostat.
Check water supply pressure; must be con-
stant 20-100 PSI. If not, instruct customer.
Check level of icemaker, adjust if needed
Check for 100-110 cc. fill (3.5-3.75 oz.). If
low, increase fill by turning adjusting screw
counterclockwise.
#3758424 - Revision B - December, 2005