Hoshizaki KML-325MWJ Service Manual page 30

Freeze-Up - Possible Cause
1. Evaporator
2. Spray Tubes and/or Spray
Guides
3. Refrigerant Charge
4. Control Board
See "II.C. Control Board Check"
5. Inlet Water Valve
6. Float Switch
See "II.E. Float Switch Check
and Cleaning"
7. Pump Motor
8. Thermostatic Expansion Valve
9. Liquid Line Valve
10. Headmaster (C.P.R.)
(remote models)
3. Low Ice Production
Low Ice Production - Possible Cause
1. Evaporator
2. Spray Tubes and/or Spray
Guides
3. Refrigerant Charge
4. Water Supply
5. Control Board
See "II.C. Control Board Check"
6. Thermistor
See "II.F. Thermistor Check"
7. Hot Gas Valve
8. Inlet Water Valve
9. Compressor
10. Liquid Line Valve
11. Thermostatic Expansion Valve
Freeze Cycle
a) Scaled up.
b) Damaged.
a) Dirty.
b) Out of position.
a) Low.
a) Freeze timer (S4 dip switch 9 & 10) set incorrectly.
b) Defective.
a) Leaking by.
a) Float does not move freely.
b) Defective.
a) RPM too slow.
b) Impeller damaged.
a) Bulb loose or defective.
a) Restricted.
a) Not bypassing.
Long Harvest Cycle
a) Scaled up.
a) Dirty.
b) Out of position.
a) Low.
a) Low water pressure.
b) External water filters clogged.
c) Insufficient water line size.
Minimum 1/4" Nominal ID (6 mm Nominal OD in the EU) water
tubing or equivalent.
d) Too cold.
a) Thermistor connection loose (K3).
b) Defective.
a) Loose, disconnected, or defective.
a) Erratic or closed.
a) Screen or orifice clogged.
a) Inefficient or off.
a) Erratic or open.
a) Defective.
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