Hoshizaki KM-2400SRH3, KM-2400SRF3 service manual Problem Possible Cause Remedy

Page 29

PROBLEM

POSSIBLE CAUSE

 

REMEDY

[5] No water

a) Water Supply Line

 

 

1. Water pressure too low and

1. Check and get

comes from

 

 

 

 

water level in Water Tank

 

recommended pressure.

Spray Tubes.

 

 

 

 

too low.

 

 

Water Pump

b) Water Solenoid

1.

Dirty mesh filter or orifice

1. Clean.

will not start, or

Valve

 

 

 

and water level in Water

 

 

freeze cycle

 

 

 

 

Tank too low.

 

 

time is too

c) Water System

 

 

1. Water leaks.

1. Check connections for

short.

 

 

 

 

 

 

water leaks, and replace.

 

 

 

 

2. Clogged.

2. Clean.

 

 

 

 

3. Pump Out Check Valve

3. Check assembly and

 

 

 

 

 

leaking by.

 

clean.

 

d) Pump Motor

 

 

1. Motor winding opened.

1. Replace.

 

 

2.

Bearing worn out.

2. Replace.

 

 

3.

Wiring to Pump Motor.

3.

Check for loose

 

 

 

 

 

 

 

connection or open, and

 

 

 

 

 

 

 

replace.

 

 

4.

Defective Capacitor.

4.

Replace.

 

 

 

 

5.

Defective or bound impeller.

5.

Replace and clean.

 

 

6.

Mechanical Seal worn out.

6.

Check and replace.

 

e) Controller Board

1.

Defective.

1.

See “II.2. [e] CHECKING

 

 

 

 

 

 

 

CONTROLLER BOARD.”

[6] Fan Motor will

a) Fan Motor

 

 

1. Motor winding opened.

1. Replace.

not start, or is

 

2.

Bearing worn out.

2.

Replace.

not operating.

 

3.

Wiring to Fan Motor.

3.

Check for loose

 

 

 

 

 

 

 

connection or open, and

 

 

 

 

 

 

 

replace.

 

 

 

4.

Defective Capacitor.

4.

Replace.

 

 

 

 

5. Fan blade bound.

5.

Check and replace.

 

b) Controller Board

1.

Defective.

1.

See “II.2. [e] CHECKING

 

 

 

 

 

 

 

CONTROLLER BOARD.”

[7] All components

a) Refrigerant

 

 

1. Undercharged.

1.

Check for leaks and

run but no ice

 

 

 

 

 

 

recharge.

is produced.

 

2.

Air or moisture trapped.

2.

Replace Drier, and

 

 

 

 

 

 

 

recharge.

 

b) Compressor

1.

Defective valve.

1. Replace.

 

c) Hot Gas Solenoid

1.

Continues to open in freeze

1.

Check and replace.

 

Valve

 

 

 

cycle.

 

 

 

d) Line Valve

1.

Continues to close in

1.

Check and replace

 

 

 

 

 

freeze cycle.

 

 

 

e) Water Solenoid

1.

Water Solenoid Valve is

1. Check for water leaks

 

Valve

 

 

 

open during freeze.

 

with icemaker off.

29

Image 29
Contents Stackable Crescent Cuber Hoshizaki AMERICA, INC Contents Maintenance Specifications Condensing UNIT, URC-24F Specifications Model URC-24F II. General Information Construction Controller Board Features of Control Products E Controller BoardSOLID-STATE Control Controller BoardPage Minute Fill Cycle Beep every 3 sec. = High Evaporator Temperature 127 FHarvest Cycle Freeze CycleControl Products HOSHIZAKI001 Board Control Products HOS-001A Board Sequence 1st Cycle Important Water Valve opening is limited to 6 minutes 2nd Cycle and after with pump drain2nd Cycle and after with no pump drain OFF Controls and AdjustmentsSetting Time Setting Frequency Checking the Controller Board Page III. Technical Information Wiring Diagram Timing Chart Page Performance Data Problem Possible Cause Remedy IV. Service Diagnosis No ICE ProductionController Board Problem Possible Cause Remedy Thermistor Evaporator is Frozen UPOthers LOW ICE ProductionAbnormal ICE Service for Refrigerant Lines Removal and Replacement of ComponentsRefrigerant Recovery Evacuation and Recharge R-404ABrazing Removal and Replacement of Compressor Important Removal and Replacement of Drier Removal and Replacement of Expansion Valve Removal and Replacement of HOT GAS Valve and Line Valve Removal and Replacement of Evaporator Important Page Removal and Replacement of Thermistor Caution Removal and Replacement of FAN Motor Removal and Replacement of Pump Motor Removal and Replacement of Water ValveRemoval and Replacement of Spray Tubes Preparing the Icemaker for Long Storage VI. Cleaning and Maintenance Instructions ImportantPage Cleaning Procedure Cleaning Procedure Page Sanitizing Procedure Following Cleaning Procedure Maintenance