Hoshizaki KM-515MAH Service Manual page 39

Problem
[2]All ice formed on
evaporator does not
fall into bin in harvest
cycle.
[3]Other.
Possible Cause
a) Evaporator
b) Water Supply Line
c) Water Filter System
d) Inlet Water Valve
e) Ambient and/or water
temperature.
f) Line Valve
(if applicable)
g) Thermistor
h) Control Board
i) Water Regulating Valve
(water-cooled model
only)
a) Spray Tubes
b) Water System
c) Refrigerant
d) Expansion Valve
e) Hot Gas Valve
f) Ice Cube Guide
1. Scaled up.
1. Water pressure too
low.
1. Dirty/Restricted.
1. Dirty mesh filter or
orifice.
2. Diaphragm does not
close.
1. Too cool.
1. Continues to open in
harvest cycle.
1. Out of position or
loose attachment.
1. Harvest timer is set
too short.
2. Defective.
1. Leaking by in harvest. 1. Check and replace.
1. Clogged.
2. Out of position.
1. Dirty.
2. Water supply line too
small; requires 3/8"
OD line dedicated per
machine.
3. Water filter flow rate
too small.
1. Low charge.
1. Bulb out of position or
loose attachment.
2. Defective.
1. Coil winding opened.
2. Plunger does not
move.
3. Wiring to hot gas
valve.
1. Out of position and ice
trapped.
39
Remedy
1. Clean.
1. Check and get
recommended pressure.
1. Replace filter.
1. Clean.
2. Check for water leaks with
icemaker off.
1. Increase temperature.
1. Check operation in harvest
cycle and replace.
1. See "V.I. Removal
and Replacement of
Thermistor."
1. Adjust longer, referring
to "II.C.3. Controls and
Adjustments, b) Harvest
Timer."
2. See "II.C.4. Control Board
Check Procedure."
1. Clean.
2. Place in position.
1. Clean.
2. Increase water line size.
3. Replace with filter that has
larger flow rate.
1. Check for leaks and
recharge.
1. Place in position.
2. Replace.
1. Replace.
2. Replace.
3. Check for loose
connection or open, and
replace.
1. Place in position.