Hoshizaki F-450MAH - Manual (Page 30)

30
IV. Service Diagnosis
1. No Ice Production
PROBLEM POSSIBLE CAUSE REMEDY
[1] The icemaker will
not start.
a) Power Supply 1. OFF position. 1. Move to ON position.
2. Loose connection. 2. Tighten.
3. Bad contacts. 3. Check for continuity
and replace.
4. Blown fuse. 4. Replace.
b) Power Switch
(Control Box)
1. Off position. 1. Move to ON position.
2. Bad contacts. 2. Check for continuity
and replace.
c) Fuse (Control Box) 1. Blown out. 1. Check for short circuit
and replace.
d) Circuit Protect Relay 1. Miswiring. 1. Check power supply
voltage and wire
properly.
e) Flush Timer 1. Flushing out. 1. Wait for 21 minutes.
2. Bad contacts. 2. Check for continuity
and replace.
f) Flush Switch 1. FLUSH position. 1. Move to ICE position.
2. Bad contacts. 2. Check for continuity
and replace.
g) Transformer 1. Coil winding opened. 1. Replace.
h) Control Water Valve 1. Coil winding opened. 1. Replace.
i) Shut-off Valve 1. Closed. 1. Open.
2. Water failure. 2. Wait till water is
supplied.
j) Plug and Receptacle
(Control Box) 1. Disconnected. 1. Connect.
2. Terminal out of Plug
or Receptacle. 2. Insert Terminal back in
position
[2] Water does not
stop, and the
icemaker will not
start
a) Water Control Relay 1. Contacts fused. 1. Replace.
2. Coil winding opened. 2. Replace.
b) Float Switch 1. Bad contacts. 1. Check for continuity
and replace.
2. Float does not move
freely. 2. Clean or replace.
c) Flush Water Valve 1. Valve seat clogged
and water leaking. 1. Clean or replace
d) Hoses 1. Disconnected. 1. Connect.
[3] Water has been
supplied, but the
icemaker will not
start.
a) Water Control Relay 1. Bad contacts. 1. Check for continuity
and replace.
b) Bin Control 1. Bad contacts. 1. Check for continuity
and replace.
2. Activator does not
move freely. 2. Clean Axle and its
corresponding holes
or replace Bin Control.