Hoshizaki KM-901MAJ Service Manual page 32

Freeze-Up - Possible Cause
10. Thermistor
See "II.G. Thermistor Check"
11. Thermostatic Expansion Valve
12. Hot Gas Valve
13. Liquid Line Valve
1. Evaporator
2. Spray Tubes and/or Spray
Guides
3. Refrigerant Charge
4. Control Board
See "II.D. Control Board Check"
5. Inlet Water Valve
6. Float Switch
See "II.F. Float Switch Check and
Cleaning"
7. Pump Motor
8. Thermostatic Expansion Valve
9. Liquid Line Valve
10. Headmaster (C.P.R.)
(remote models)
a) Loose, disconnected, or defective.
a) Defective.
a) Closed or restricted.
a) Open.
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.
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