Service Manual

34
B. LED Lights and Audible Alarm Safeties
The "POWER" LED indicates proper control voltage and will remain on unless a control
voltage problem occurs. For further details, see "II. B. Service Diagnosis."
Icemaking Sequence
Sequence Step LED
Energized
Components Min. Max.
Fill Cycle WTRIN WV On until UFS closes.
Alarm sounds after 90 sec.
Ice Purge Cycle GM GM 5 min. 5 min.
Freeze Cycle
(with rell)
GM, WTRIN* (rell),
COMP
GM, Comp,
FM, WV* (rell)
*On until UFS closes.
Alarm sounds after 90 sec.
1-1 hr or
1-12 hr
Drain Cycle
FLUSH (Drain)
Do not adjust
for 1-in12 on this
model.
1-in-1: DV-
Icemaker status
does not change
1-in-12: DV
2 sec. 10 min.
Dispensing Sequence
Sequence Step LED
Energized
Components
Time LEDs are on
**Dispense Mode
Continuous
Ice Dispense
Activation
ICE GM, **IDSV Factory set for
20 sec.
IDSV de-energizes on internal
overload after 3 to 4min.
Resets when cool
Dispense Water
Valve Activation
WTRDP DispWV
The built-in safeties shut down the appliance and have alarms as listed below.
No. of Beeps
(every 5 sec.)
Type of Alarm Reset Options
1 Low Water Safety
UFS open > 90 seconds after WV energized.
Automatic reset once water supply is restored
and UFS closes.
2 Control Switch
In "DRAIN" position longer than 15 minutes.
Automatic reset once the control switch is
moved to the "ICE" position.
3 High-Pressure Switch
First and second activation in 1 hour.
Automatic reset once pressure drops
below the high pressure threshold and the
high-pressure switch closes.
4 High-Pressure Switch
Third activation in 1 hour.
Call for service. To avoid possible catastrophic
failure, it is recommended to leave the
appliance off until this alarm is resolved.
Manual reset. Turn power off and on again.
5 Freeze Timer
WV off > 30 minutes since last WV activation.
Manual reset. Turn power off and on again.
6 Low Voltage
(92Vac ±5% or less)
"POWER OK" LED turns off if voltage
protection operates.
The control voltage safeties automatically
reset when voltage is corrected.
7 High Voltage
(147Vac ±5% or more)
8 Gear Motor
CCR contacts fail to close.
Manual reset. Turn power off and on again.
9 Open Circuit CB K8 #3 and #4.
(CB S1 dip switch 7 on) Not used this model.
Manual reset. Turn power off and on again.
Legend: CB–control board; CCR–compressor control relay; Comp–compressor;
DispWV–dispense water valve; DV–drain valve; FM–fan motor; GM–gear motor;
IDSV–ice dispense solenoid valve; MBC–mechanical bin control; UFS–upper oat
switch; WV–inlet water valve