No Ice Production - Hoshizaki KM-61BAH Service Manual

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2. NO ICE PRODUCTION

PROBLEM
[1] The icemaker
will not start.
2940 Hwy 14 W, Rochester, MN 55901
POSSIBLE CAUSE
a) Power Supply 1. OFF position.
2. Loose connections.
3. Bad contacts.
4. Voltage too high.
5. Unplugged.
b) Fuse (inside fused 1. Blown out.
disconnect, if any)
c) Control Switch 1. OFF or WASH position.
2. Bad contacts.
d) Bin Control Switch 1. Tripped with bin filled
with ice.
2. Defective reed switch.
e) High Pressure 1. Bad contacts.
Control (KM-151
only)
f) Transformer 1. Thermal fuse blown out
or coil winding opened.
g) Wiring to Control 1. Loose connections or
Board open.
h) Thermistor 1. Leads shorted or open
and High Temperature
Safety operates. If
open, unit will start but
have long harvest cycle.
i) Hot Gas Solenoid 1. Continues to open in
Valve freeze cycle and High
Temperature Safety
operates.
j) Water Supply Line 1. Water supply off and
water supply cycle does
not finish.
k) Inlet Water Valve 1. Mesh filter or orifice
gets clogged and water
supply cycle does not
finish.
2. Coil winding opened.
3. Wiring to Water Valve.
l) Control Board 1. Defective.
1. Move to ON position.
2. Tighten.
3. Check for continuity and
4. Check and get
5. Plug in.
1. Check for short circuit and
1. Move to ICE position.
2. Check for continuity and
1. Remove ice.
2. Check for continuity and
1. Check for continuity and
1. Replace.
1. Check for continuity and
1. See "II. 4. HARVEST
1. Check for power off in
1. Check and get
1. Clean. Replace if
2. Replace.
3. Check for loose
1. See "II. 3. [d] CONTROL
35
REMEDY
replace.
recommended voltage.
replace.
replace.
replace.
replace.
replace.
CONTROL -
THERMISTOR".
freeze cycle and replace.
recommended pressure.
Check for water supply.
necessary.
connection or open, and
replace.
BOARD CHECK
PROCEDURE".