Hoshizaki F-450MAH User Manual download pdf (Page 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.

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Hoshizaki F-450MAH User Manual Page 30

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