Hoshizaki DCM-500BWH-OS Supplementary Manual

41

[5] All components 

run, but no ice is 
produced. (continued)

d) Evaporator

1. Defective.

1. Replace.

e) Water Supply Line 

(water-cooled model 
only)

1. Condenser water 

pressure too low or 
off and high pressure 
control opens and 
closes frequently.

1. Check and get 

recommended pressure.

f) Water Regulating Valve 

(water-cooled model 
only)

1. Water regulating 

valve set too high or 
clogged (water-cooled 
model only).

1. Clean, adjust, or replace. 

[1] Low ice production.

a)Evaporator

1. Dirty or defective.

1. Clean or replace. 

b)Bin Control

1. Erratic, sticking, 

defective.

1. Clean or replace.

c) Drain Valve

1. Leaking water.

1. Clean or replace.

d)Expansion Valve

1. Bulb loose.

1. Secure bulb.

. Operating erratically.

. Check and replace.

e)Refrigerant Charge

1. Low charge.

1. See "V.B. Service for 

Refrigerant Lines."

. Overcharge.

. See "V.B. Service for 

Refrigerant Lines."

f) Refrigerant Line

1. Refrigerant line or 

component restricted.

1. Repair/replace the 

clogged line/component 
and replace the drier.

g)High-Side Pressure 

Too High

1. Dirty air filter or 

condenser. 

1. Clean.

. Ambient (or 

condenser) water 
temperature too warm. 

. Reduce temperature.

3. Fan motor slow rpm.

3. See "3. [] a) Fan Motor."

4. Fan motor capacitor.

4. Check and replace.

5. Condenser water 

pressure too low or off 
(water-cooled model 
only).

5. Check and get 

recommended pressure.

6. Water regulating 

valve set too high or 
clogged (water-cooled 
model only).

6. Clean, adjust, or replace. 

h)Compressor

1. Inefficient compressor. 1. Replace
. Faulty thermal 

protector (overload).

. Replace compressor.

3. Faulty capacitor/

starter.

3. Replace.