Hoshizaki DCM-750BWH Supplementary Manual

4

[5] All components 

run, but no ice is 
produced. (continued)

d) Evaporator

. Defective.

. Replace.

e) Water Supply Line 

(water-cooled model 
only)

. Condenser water 

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

. Check and get 

recommended pressure.

f) Water Regulating Valve 

(water-cooled model 
only)

. Water regulating 

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

. Clean, adjust, or replace. 

[] Low ice production.

a)Evaporator

. Dirty or defective.

. Clean or replace. 

b)Bin Control

. Erratic, sticking, 

defective.

. Clean or replace.

c) Drain Valve

. Leaking water.

. Clean or replace.

d)Expansion Valve

. Bulb loose.

. Secure bulb.

. Operating erratically.

. Check and replace.

e)Refrigerant Charge

. Low charge.

. See "V.B. Service for 

Refrigerant Lines."

. Overcharge.

. See "V.B. Service for 

Refrigerant Lines."

f) Refrigerant Line

. Refrigerant line or 

component restricted.

. Repair/replace the 

clogged line/component 
and replace the drier.

g)High-Side Pressure 

Too High

. Dirty air filter or 

condenser. 

. 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

. Inefficient compressor. . Replace
. Faulty thermal 

protector (overload).

. Replace compressor.

3. Faulty capacitor/

starter.

3. Replace.