Service Diagnosis; No Ice Production - Hoshizaki FM-300AKE-HC Service Manual

IV. SERVICE DIAGNOSIS
Display error records by operating the operation board (see "III. 5. [d] DISPLAYING ERROR
LOG"). Check for a possible cause and service the unit.

1. NO ICE PRODUCTION

PROBLEM
[1] The icemaker
will not start.
[2] Water does not
stop, and the
icemaker will not
start.
[3] Water has been
supplied, but the
icemaker will not
start.
POSSIBLE CAUSE
a) Power supply
b) Fuse
c) Transformer
receptacle
d) Operation switch
e) Transformer
f) Water valve
g) Water supply tap
h) Plug and
receptacle (control
box)
i) Reed switch
(spout)
j) Overload protector
k) Model number
a) Water control
relay (controller
board)
b) Float switch
c) Flush water valve
d) Hoses
e) Mechanical seal
f) Reservoir
a) Bin control
b) Gear motor
protector (thermal
breaker)
c) Controller board
1. OFF position.
2. Loose connections.
3. Bad contacts.
4. Blown fuse.
5. Voltage too low.
1. Blown out. No
indication on
operation board.
1. Disconnected.
1. OFF position.
2. Bad contacts.
1. Coil winding opened.
1. Coil winding opened.
1. Closed.
2. Water failure.
1. Disconnected.
2. Terminal out of plug
or receptacle.
1. Tripped.
1. Tripped.
1. Incorrect.
1. Contacts fused.
2. Coil winding opened.
1. Bad contacts.
2. Float does not move
freely.
1. Valve seat clogged
and water leaking.
1. Disconnected.
1. Water leaks.
1. Cracked.
1. Bad contacts.
1. Tripped.
1. Defective.
43
REMEDY
1. Move to ON position.
2. Tighten.
3. Check for continuity and
replace.
4. Replace.
5. Get recommended voltage.
1. Locate and resolve the cause
of short circuit (ex. control
water valve, flush water
valve), and replace.
1. Connect.
1. Move to ON position.
2. Check for continuity and
replace.
1. Replace.
1. Replace.
1. Open.
2. Wait till water is supplied.
1. Connect.
2. Insert terminal back in
position.
1. See 1 - [3] - a).
2. Reset.
2. Set correct number. See "III. 5.
[b] SETTING MODEL
NUMBER".
1. Replace controller board.
2. Replace controller board.
1. Check for continuity and
replace.
2. Clean or replace.
1. Clean or replace.
1. Connect.
1. Replace.
1. Replace.
1. Check for continuity and
replace.
1. Find out the cause, resolve it,
and press reset button on
motor protector.
1. Replace.