Alarm Safeties - Hoshizaki F-1002MAJ-SC Instruction Manual

L. Alarm Safeties
Should an alarm occur, follow the instructions in the table below to address the alarm.
If an alarm continues to occur, contact an authorized service agent.
In case of alarm, the built-in safeties shut down the unit, the orange "ALARM" LED turns
on, and audible alarms sound as listed below.
No. of Beeps
(every 5 sec.)
Low-Water Safety
1
UFS open > 90 sec. after WV energized.
2 Control Switch
In "DRAIN" position longer than 15 min.
High-Pressure Switch
3
First and second activation in 1 hr.
4 High-Pressure Switch
Third activation in 1 hr.
Freeze Timer
5
WV off > 30 min. since last WV activation.
Low Voltage
6
92VAC ± 5% or less.
7 High Voltage
147VAC ± 5% or more.
a) Gear Motor Fuse or Protector Open
8
CCR contacts fail to close.
Used on all models.
b) Evaporator Thermistor
At GM startup Evaporator
thermistor < -4°F (-20°C).
Used on cubelet (-C)(-SC)(-CB)
models only.
9 Bin Control 2 (Mechanical)
Open Circuit Control Board K8
(#3 and #4)
Not used on DCM or self-contained
models.
Evaporator Thermistor
10
Evaporator thermistor reaches -22°F
(-30°C) for 3 consecutive cycles.
Used on cubelet (-C)(-SC)(-CB)
models only.
Legend: Comp–compressor; DV–drain valve; EH–evaporator heater; FM–fan motor;
FMR–fan motor-remote; FS–float switch; GM–gear motor; HM–headmaster
(C.P.R.); LLV-liquid line valve; SLV–suction line valve; TXV–thermostatic
expansion valve; UFS–upper float switch; WV–inlet water valve
Dip switches are factory set and must be adjusted per the unit's service manual or
Hoshizaki Technical Support recommendation.
Type of Alarm Notes and Reset Options
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.
Turn power off. Call for service.
To avoid possible catastrophic failure, it is
recommended to leave the icemaker off until this
alarm is resolved.
Call for service. Manual reset. Turn power off and
on again. Check for FS stuck (up), WV leaking by,
TXV defective, LLV not opening, low charge, HM not
bypassing, or inefficient Comp.
Green "POWER" LED turns off if voltage
protection operates.
Control voltage safeties automatically reset when
voltage is corrected.
Turn power off. Check for GM fuse or protector open.
Replace fuse or let protector cool and reset.
If persistent trips occur, call for service.
Turn power off. Call for service.
To avoid possible catastrophic failure, it is
recommended to leave the icemaker off until this
alarm is resolved.
Manual reset. Turn power off and on again.
Manual reset. Turn power off and on again.
Modular Flaker and Cubelet (-C)(-SC)(-CB) Models:
Control Board S2 Dip Switch #7 must be ON.
DCM and Self-Contained Models:
Control Board S2 Dip Switch #7 must be OFF.
Turn power off. Call for service.
To avoid possible catastrophic failure, it is
recommended to leave the icemaker off until this
alarm is resolved.
Manual reset. Turn power off and on again.
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