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.

 

b) Damaged.

 

 

3. Cube Guide

a) Out of position.

 

 

 

b) Damaged.

 

 

4. Inlet Water Valve

a) Water valve screen clogged.

 

b) Defective.

 

 

5. Spray Tubes and/or Spray

a) Dirty.

Guides

 

b) Out of position.

 

 

 

6. Refrigerant Charge

a) Low.

7. Ambient Temperature

a) Too cool.

 

 

8. Water Supply

a) Low water pressure.

 

 

 

b) External water filters clogged.

 

 

 

c) Insufficient water line size.

 

Minimum 3/8" nominal ID copper water tubing or equivalent.

9. Thermostatic Bin Control

a) Extension bracket not installed.

See "IV.C. Bin Control Check."

 

b) Bulb out of position.

 

 

 

 

c) Bad contacts.

 

 

10. Control Board

a) Harvest timer set too short.

See "IV.B. Control Board Check."

b) Defective.

11. Thermistor

a) Loose, disconnected, or defective.

See "IV.E. Thermistor Check."

 

 

 

12. Hot Gas Valve

a) Closed.

 

 

13. Liquid Line Valve (if applicable)

a) Open.

 

 

14. Thermostatic Expansion Valve

a) Defective.

(TXV)

 

15. Water Regulating Valve

a) Leaking by.

(water-cooled model)

 

b) Defective.

 

 

 

 

Freeze Cycle

 

 

1. Evaporator

a) Scaled up.

 

b) Damaged.

 

 

2. Separators

a) Out of position.

 

 

 

b) Damaged.

 

 

3. Spray Tubes and/or Spray

a) Dirty.

Guides

b) Out of position.

 

 

 

4. Refrigerant charge.

a) Low.

 

 

5. Check Valve

a) Defective.

 

 

6. Control Board

a) Freeze timer set incorrectly.

See "IV.B. Control Board Check."

b) Defective.

 

 

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Hoshizaki KM-1601SRH/3, KM-1601SWH/3, KM-1601SAH/3 service manual Freeze Up Possible Cause Harvest Cycle, Freeze Cycle

KM-1601SWH/3, KM-1601SRH/3, KM-1601SAH/3 specifications

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