Service Diagnosis; Ice Production - Hoshizaki KM-1300SWH-E Service Manual

IV. SERVICE DIAGNOSIS
1. NO ICE PRODUCTION
PROBLEM
[1] The icemaker a) Power Supply
will not start
b) Fuse (Inside Fused
c) Control Switch
d) Bin Control
e) High Pressure
Control
f) Transformer
g) Wiring to
Controller Board
h) Thermistor
i) Hot Gas Solenoid
Valve
j) Water Supply Line
k) Water Solenoid
l) Controller Board
POSSIBLE CAUSE
1. "OFF" position.
2. Loose connections.
3. Bad contacts.
4. Voltage too high.
1. Blown out.
Disconnect, if any)
1. "OFF" position.
2. Bad contacts.
1. Tripped with bin filled
Thermostat
2. Ambient temperature
3. Set too warm.
4. Bulb out of position.
5. Bad contacts or leaks
1. Bad contacts.
1. Thermal fuse blown out
1. Loose connections or
1. Leads short-circuit or
1. Continues to open in freeze 1. Check for power off in
1. Water supply off and
2. Condenser water pressure
1. Mesh filter or orifice gets
2. Coil winding opened.
3. Wiring to Water Valve.
1. Defective
with ice.
too cool.
bulb.
or coil winding opened.
open.
open and High Temperature
Safety operates.
cycle and High Temperature
Safety operates.
water supply cycle does
not finish.
too low or off and Pressure
Control opens and closes
frequently to finally operate
High Temperature Safety.
clogged and water supply
cycle does not finish.
24
REMEDY
1. Move to "ON" position
2. Tighten
3. Check for continuity and
replace.
4. Check and get
recommended voltage.
1. Check for short circuit
and replace
1. Move to "ICE" position.
2. Check for continuity and
replace.
1. Remove ice.
2. Increase ambient
temperature.
3. See "II.2.[d]
CONTROLS AND
ADJUSTMENTS, 5) Bin
Control."
4. Place in position.
5. Check for continuity and
replace.
1. Check for continuity and
replace.
1. Replace.
1. Check for continuity and
replace.
1. See "II.2.[d] CONTROLS
AND ADJUSTMENTS,
1) Defrost Control."
freeze cycle and replace.
1. Check and get
recommended pressure.
2. Check and get
recommended pressure.
1. Clean.
2. Replace.
3. Check for loose
connection or open, and
replace.
1. See "II.2[e] CHECKING
CONTROLLER BOARD."