Hoshizaki DCM-500BWH-OS - Manual (Page 41)

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Problem Possible Cause Remedy
[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.
2. Low Ice Production
Problem Possible Cause Remedy
[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.