No Ice Production - Hoshizaki KM-61BAH Service Manual

2. NO ICE PRODUCTION

PROBLEM
[1] The icemaker a) Power Supply
will not start.
b) Fuse (inside fused
c) Control Switch
d) Bin Control Switch
e) High Pressure
f) Transformer
g) Wiring to Control
h) Thermistor
i) Hot Gas Solenoid
j) Water Supply Line
k) Inlet Water Valve
l) Control Board
POSSIBLE CAUSE
1. OFF position.
2. Loose connections.
3. Bad contacts.
4. Voltage too high.
5. Unplugged.
1. Blown out.
disconnect, if any)
1. OFF or WASH position.
2. Bad contacts.
1. Tripped with bin filled
2. Defective reed switch.
1. Bad contacts.
Control (KM-151
only)
1. Thermal fuse blown out
1. Loose connections or
Board
1. Leads shorted or open
1. Continues to open in
Valve
1. Water supply off and
1. Mesh filter or orifice
2. Coil winding opened.
3. Wiring to Water Valve.
1. Defective.
with ice.
or coil winding opened.
open.
and High Temperature
Safety operates. If
open, unit will start but
have long harvest cycle.
freeze cycle and High
Temperature Safety
operates.
water supply cycle does
not finish.
gets clogged and water
supply cycle does not
finish.
35
REMEDY
1. Move to ON position.
2. Tighten.
3. Check for continuity and
replace.
4. Check and get
recommended voltage.
5. Plug in.
1. Check for short circuit and
replace.
1. Move to ICE position.
2. Check for continuity and
replace.
1. Remove ice.
2. Check for continuity and
replace.
1. Check for continuity and
replace.
1. Replace.
1. Check for continuity and
replace.
1. See "II. 4. HARVEST
CONTROL -
THERMISTOR".
1. Check for power off in
freeze cycle and replace.
1. Check and get
recommended pressure.
Check for water supply.
1. Clean. Replace if
necessary.
2. Replace.
3. Check for loose
connection or open, and
replace.
1. See "II. 3. [d] CONTROL
BOARD CHECK
PROCEDURE".