Problem

Possible Cause

 

Remedy

 

 

 

 

[7] Fan motor will

a) Fan Motor

1. Motor winding open.

1. Replace.

not start, or is not

 

 

 

 

2. Bearing worn out.

2. Replace.

operating (except

 

 

3. Wiring to fan motor.

3. Check for loose connection

water-cooled model).

 

 

 

or open, and replace.

 

 

 

 

 

4. Defective capacitor.

4. Replace.

 

 

 

 

 

 

5. Fan blade bound.

5. Check and replace.

 

 

 

 

 

b) Control Board

1. Defective.

1. See "IV.B. Control Board

 

 

 

Check."

 

 

 

 

[8] All components

a) Refrigerant

1. Low charge.

1. Check for leaks. Recover,

run, but no ice is

 

 

repair, evacuate, and

produced.

 

 

recharge.

 

 

2. Air or moisture

2. Replace drier, evacuate,

 

 

trapped.

and recharge.

 

 

 

 

 

b) Compressor

1. Defective.

1. Replace.

 

 

 

 

 

c) Hot Gas Valve

1. Continues to open in

1. Check and replace.

 

 

freeze cycle.

 

 

 

 

 

 

d) Liquid Line Valve

1. Continues to close in

1. Check and replace.

 

(if applicable)

freeze cycle.

 

 

e) Inlet Water Valve

1. Inlet water valve is

1. Check for water leaks with

 

 

wide open during

icemaker off.

 

 

freeze.

 

 

 

 

 

 

f) Expansion Valve

1. Bulb loose.

1. Secure bulb.

 

 

 

 

 

 

2. Operating erratically.

2. Check and replace.

 

 

 

 

 

g) Headmaster (C.P.R.)

1. Not operating properly

1. Replace headmaster.

 

(remote condenser

and liquid line

 

 

unit)

temperature too warm.

 

 

h) Water Supply Line

1. Condenser water

1. Check and get

 

(water-cooled model)

pressure too low or

recommended pressure.

 

 

off and high pressure

 

 

 

control opens and

 

 

 

closes frequently.

 

 

 

 

 

 

i) Water Regulating Valve

1. Set too high.

1. Adjust or replace. See

 

(water-cooled model)

 

"V.J. Adjustment of Water

 

 

 

Regulating Valve."

 

 

 

 

2. Evaporator is Frozen Up

Problem

Possible Cause

 

Remedy

 

 

 

 

[1]Freeze cycle time is

a) Inlet Water Valve

1. Diaphragm does not

1. Check for water leaks with

too long.

 

close.

icemaker off.

 

 

 

 

 

b) Float Switch

1. Float does not move

1. Clean or replace. See "IV.

 

 

freely or defective

D. Float Switch Check and

 

 

switch.

Cleaning."

 

 

 

 

 

c) Evaporator

1. Scaled up.

1. Clean.

 

 

 

 

 

 

2. Damaged.

2. Replace.

 

 

 

 

 

d) Spray Tubes

1. Dirty.

1. Clean.

 

 

 

 

 

 

2. Out of position.

2. Place in position.

 

 

 

 

 

e) Water Pump

1. RPM too slow.

1. See chart 1.[5].

 

 

 

 

60

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Hoshizaki KM-1301SAH/3, KM-1301SRH/3, KM-1301SWH/3 service manual Evaporator is Frozen Up

KM-1301SWH/3, KM-1301SRH/3, KM-1301SAH/3 specifications

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