No Ice, "Ice" Displayed On Lcd, But Not Flashing - Sub-Zero INTEGRATED Series Service Manual

Troubleshooting
PROBLEM
P. No Ice, "ICE" Displayed on
LCD, but not Flashing
(NOTE: The Icemaker system
is disabled for 45 minutes after
each harvest.)
#7015817 - Revision A - January, 2010
INTEGRA TED
INTEGRA TED
(736 T (736 T
POSSIBLE CAUSE
Unit Has Not Run Long Enough
Warm Freezer Temperatures
(NOTE: Freezer must be 17°F or colder for
icemaker to function)
Shut-off Arm Stuck in Up/Off Position
Disconnected or Defective Water Valve
Frozen Fill Tube
a. Water Supply Problem
b. Disconnected or defective fill tube
heater
c. No power from control board to fill tube
heater
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
8-16
SERIES
SERIES
all SWS #2970000) all SWS #2970000)
TEST / ACTION
Freezer must be 17°F for icemaker to oper-
ate, approximately 24 hours after unit instal-
lation. Instruct customer.
See PROBLEM B, D, F, G, H, K & L earlier
in Troubleshooting Guide.
Check shut-off arm, if stuck in up/off posi-
tion, correct problem.
Check electrical connections and water con-
nections at water valve, Reconnect / repair
connections.
Check resistance of water valve, 160 ohms.
Replace if defective.
a. Check water supply pressure; must be con-
stant 20-100 PSI. If not, instruct customer.
b. Check electrical connections at fill tube
heater. Reconnect / repair connections.
Check resistance of fill tube heater, 2300 -
2900 Ohms. Replace if defective.
c. Check for AC line voltage at J7-3 on control
board. Replace board if defective.
Pressing 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 ice-
maker and see #1, #2 & #3 below.
1. If icemaker motor starts and finishes cycle:
a. Check for AC line voltage at valve during fill
mode. If no AC line voltage, inspect connec-
tions at icemaker and valve. Repair or
replace connection.
b. Check for AC line voltage from icemaker
during fill mode. If no power, replace ice-
maker.
2. If icemaker motor starts but does not finish
cycle:
c. Replace icemaker.
3. If icemaker motor does NOT start:
d. Check for AC line voltage to icemaker. If no
power, repair electrical connection.
e. Check power to/from icemaker switch.
Repair connection, replace defective switch.
f. Check for AC line voltage at control board
(J7-5). If no power, replace control board. If
power, repair connection.