Hoshizaki KML-351MAH Service Manual page 37

Problem
[2]All ice formed on
evaporator does not
fall into bin in harvest
cycle.
[3]Other.
Possible Cause
a) Evaporator
b) Ambient and/or Water
Temperature
c) Water Supply Line
d) Water System
e) Inlet Water Valve
f) Spray Tubes
g) Thermistor
h) Hot Gas Valve
i) Expansion Valve
j) Liquid Line Valve
(if applicable)
k) Control Board
l) Refrigerant Charge
m)Water Regulating Valve
(water-cooled model
only)
a) Ice Cube Guide
b) Bin Control Thermostat 1. Bulb out of position.
1. Scaled up.
2. Damaged.
1. Too cool.
1. Water pressure too
low.
1. Water supply line too
small; requires 3/8"
OD line dedicated per
unit.
2. Water filter clogged or
flow rate too small.
1. Dirty mesh filter or
orifice.
2. Diaphragm does not
close.
1. Dirty.
2. Out of position.
1. Loose or
disconnected.
1. Coil winding open.
2. Plunger does not
move.
3. Wiring to hot gas
valve.
1. Open.
2. Bulb loose.
1. Continues to open in
harvest cycle.
1. Harvest timer is set
too short.
2. Defective.
1. Low Charge
1. Leaking by in harvest. 1. Check and replace.
1. Out of position.
2. Bad contacts.
37
Remedy
1. Clean.
2. Replace.
1. Increase temperature.
1. Check and get
recommended pressure.
1. Increase water line size.
2. Replace filter or install a
higher flow rate filter.
1. Clean.
2. Check for water leaks with
icemaker off.
1. Clean.
2. Place in position.
1. Secure or reattach.
See "V.J. Removal
and Replacement of
Thermistor."
1. Replace.
2. Replace.
3. Check for loose
connection or open, and
replace.
1. Check and replace.
2. Secure bulb.
1. Check operation in harvest
cycle and replace.
1. Adjust longer, referring
to "II.C.3. Controls and
Adjustments, b) Harvest
Timer (dip switch 1 & 2)."
2. See "II.C.4. Control Board
Check Procedure."
1. Check for leaks. Recover,
repair, evacuate, and
recharge.
1. Place in position.
1. Place in position.
2. Check for continuity and
replace.