Hoshizaki STACKABLE CRESCENT CUBER KM-1301SAH-E - Manual (Page 48)

48
2. Freeze Up
Defrost and clean the unit prior to diagnosing freeze up. See "VI.A. Cleaning and Sanitizing
Instructions."
Freeze Up - Possible Cause
Harvest Cycle
1. Evaporator a) Scaled up.
b) Damaged.
2. Separators a) Out of position.
3. Cube Guide a) Out of position.
4. Spray Tubes and/or Spray
Guides
a) Dirty.
b) Out of position.
5. Refrigerant Charge a) Low.
6. Ambient Temperature a) Too cool.
7. Water Supply a) Low water pressure.
b) External water filters clogged.
c) Insufficient water line size.
Minimum 3/8" nominal ID (10 mm nominal OD)
8. Thermostatic Bin Control
See "IV.C.1. Thermostatic Bin
Control Check."
a) Extension bracket not installed.
b) Bulb out of position.
c) Bad contacts.
9. Control Board
See "IV.B. Control Board Check."
a) Harvest timer set too short.
b) Defective.
10. Mechanical Bin Control
See "IV.C.2. Mechanical Bin
Control Check and Cleaning."
a) Actuator does not move freely.
11. Thermistor
See "IV.E. Thermistor Check."
a) Loose, disconnected, or defective.
12. Hot Gas Valve a) Closed.
13. Inlet Water Valve a) Water valve screen clogged.
14. Liquid Line Valve (if applicable) a) Open.
15. Expansion Valve (TXV) a) Defective.
16. Water Regulating Valve
(water-cooled model)
a) Leaking by.
b) Defective.