Freeze Up - Possible Cause

 

Freeze Cycle

1. Evaporator

a) Scaled up.

 

 

 

b) Damaged.

 

 

2. Separators

a) Out of position.

 

 

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.

 

 

7. Inlet Water Valve

a) Leaking by.

 

 

8. Float Switch

a) Float does not move freely.

See "IV.D. Float Switch Check

 

b) Defective.

and Cleaning."

 

 

 

9. Pump Motor

a) RPM too slow.

10. Expansion Valve (TXV)

a) Defective.

 

 

11. Headmaster (C.P.R.) (remote

a) Defective.

condenser unit)

 

 

 

12. Water Regulating Valve

a) Out of adjustment.

(watercooled model)

 

See "IV.F. Adjustment of Water

 

Regulating Valve."

 

 

 

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Hoshizaki KM-1301SAH-E, KM-1301SRH-E, KM-1301SWH-E service manual Freeze Up Possible Cause Freeze Cycle