Hoshizaki CUBELET ICEMAKER/DISPENSER DCM-750BAH-OS - Manual (Page 38)

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C. Diagnostic Charts
1. No Ice Production
Problem Possible Cause Remedy
[] The icemaker will not
start. (Fill Cycle)
a) Power Supply . Off, blown fuse, or
tripped breaker.
. Turn on, replace, or reset.
. Loose connection. . Tighten.
3. Bad contacts. 3. Check for continuity and
replace.
4. Not within
specifications.
4. Refer to nameplate and
correct.
b) Water Supply . Water supply off or
pressure too low.
. Check and get
recommended pressure.
c) Power Switch
(Control Box)
. "OFF" position. . Move to "ON" position.
. Bad contacts. . Check for continuity and
replace.
d) Door Switch . Door switch not
engaged.
. Engage door switch.
. Bad contacts. . Check for continuity and
replace.
e) Power Protect Relay . Voltage not within
specifications.
. Refer to nameplate and
correct.
. Bad contacts. . Check for continuity and
replace.
f) Transformer . Coil winding open. . Replace.
g) Fuses () . Blown. . Check for short circuit and
replace.
h) Control Switch . "OFF" or "DRAIN"
position.
. Move to "ICE" position.
. Bad contacts. . Check for continuity and
replace.
i) Water Control Relay . Bad contacts. . Check for continuity and
replace.
. Coil winding open. . Replace.
j) Inlet Water Valve . Mesh filter or orifice
clogged.
. Clean.
. Coil winding open. . Replace.
3. Wiring to inlet water
valve.
3. Check for loose or open
connection. Repair or
replace.
k) Float Switch . Bad contacts. . Check for continuity and
replace.
. Float does not move
freely.
. Clean or replace.
l) Bin Control . Open. . Bin full, check for
continuity on proximity
switch.
. Actuator sticking. . Adjust or replace.
3. Proximity switch open. 3. Replace.