Led Lights And Audible Alarm Safeties - Hoshizaki DCM-300BAH Service Manual

B. LED Lights and Audible Alarm Safeties
The "POWER OK" LED indicates proper control voltage and will remain on unless a
control voltage problem occurs. For further details, see "II.B. Service Diagnosis."
Sequence Step
Fill Cycle WTRIN
Ice Purge Cycle GM
Freeze Cycle GM, WTRIN* (refill),
(with refill) COMP
1-1 hr or FLUSH (Drain)
Do not adjust for
1-12 hr
Drain Cycle 1-in-12 on this
model.
Sequence Step
Ice Dispense ICE, AM*
Activation
Dispense Water WTRDP
Valve Activation
The built-in alarm safeties shut down the appliance.
No. of Beeps
(every 5 sec.)
1 Low Water Safety
UFS open > 90 seconds after WV energized.
2 Control Switch
In "DRAIN" position longer than 15 minutes.
3 High-Pressure Switch
First and second activation in 1 hour.
4 High-Pressure Switch
Third activation in 1 hour.
5 Freeze Timer
WV off > 30 minutes since last WV activation.
6 Low Voltage
(92Vac ±5% or less)
7 High Voltage
(147Vac ±5% or more)
8 Gear Motor
CCR contacts fail to close.
9 Open Circuit CB K8 #3 and #4.
Infrared Sensor (S1 dip switch 7)
(Not used on this model)
Legend: AM–agitating motors, CB–control board; CCR–compressor contact relay;
Comp–compressor; DispWV–dispense water valve; DV–drain valve;
EH–evaporator heater; FM–fan motor; GM–gear motor; IDM–ice dispense motor;
IDS–ice dispense shutter solenoid; UFS–upper float switch; WV–inlet water valve
Icemaking Sequence
Energized
LED
Components
WV
GM, EH, FM
GM, Comp,
FM, WV* (refill)
1-in-1: DV-
Icemaker status
does not change
1-in-12: DV
Dispensing Sequence
Energized
LED
Components
IDS**, IDM**, AM* *AM energizes
DispWV
Type of Alarm
Min.
-
5 min.
-
2 sec.
Time LEDs are on
.6 sec. every 12
sec. of cumulative
dispense time
Automatic reset once water supply is restored
and UFS closes.
Automatic reset once the control switch is
moved to the "ICE" position.
Automatic reset once pressure drops
below the high pressure threshold and the
high-pressure switch closes.
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.
Manual reset. Turn power off and on again.
"POWER OK" LED turns off if voltage
protection operates.
The control voltage safeties automatically
reset when voltage is corrected.
Manual reset. Turn power off and on again.
Manual reset. Turn power off and on again.
37
Max.
-
5 min.
*On until UFS closes. Alarm
sounds after 90 sec.
10 min.
**Dispense Mode Switch
Continuous Portion
60 sec. per Adjustable
activation between 0.2 sec.
and 20 sec.
Reset Options