Hoshizaki CUBELET ICEMAKER/DISPENSER DCM-750BAH-OS - Manual (Page 40)

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Problem Possible Cause Remedy
[3] Ice purge cycle will
not start.
a) Water Control Relay . Low water safety
circuit open
(bad contacts ).
. Replace.
b) Control Switch . Bad contacts. . Check for continuity and
replace.
c) Bin Control . Open. . Bin full, check for
continuity on proximity
switch.
d) Control Board . Fails to operate gear
motor relay.
. See "II.D.4. Control Board
Check Procedure."
e) Gear Motor Fuse . Blown. . Check gear motor
amperage, bearing
wear (see "V.F.. Upper
Bearing Wear Check"),
and supply voltage.
f) Gear Motor Thermal
Protector
. Open. . Check gear motor
bearings, supply voltage.
g) Gear Motor . Open windings. . Replace.
. Auger coupling broke. . Replace.
3. Locked bearings.
3. Replace.
[4] Freeze cycle will not
start (compressor).
a) Gear Motor Protect
Relay
. Open coil. . Replace.
. Open contacts. . Replace.
b) Control Board . Defective. . See "II.D.4. Control Board
Check Procedure."
c) Starter (Start Relay) . Bad contacts. . Check for continuity and
replace.
. Coil winding open. . Replace.
3. Loose connections. 3. Tighten.
d) Start Capacitor or Run
Capacitor
. Defective. . Replace.
e) Compressor . Power supply not
within specifications.
. Refer to nameplate and
correct.
. Wiring to compressor. . Check for loose or open
connection, repair or
replace.
3. Defective. 3. Replace.
4. Compressor locked
and internal motor
protector tripped.
4. Replace.
[5] All components
run, but no ice is
produced.
a) Refrigerant . Low charge. . See "V.B. Service for
Refrigerant Lines."
. Refrigerant line or
component restricted.
. Remove the restriction or
component and replace
the drier.
3. Air or moisture
trapped.
3. Recover refrigerant,
replace drier, evacuate,
and recharge.
b) Expansion Valve . Bulb loose. . Secure bulb.
. Operating erratically. . Check and replace.
c) Compressor . Defective. . Replace.