Diagnostic Tables - Hoshizaki SRC-14H Service Manual

F. Diagnostic Tables
Before consulting the diagnostic charts, check for correct installation, proper voltage per
appliance nameplate, and adequate water supply. Check control board using the steps in
"II.C. Control Board Check."
1. No Ice Production
No Ice Production - Possible Cause
1. Power Supply-FS
Power Supply-SRC
2. Water Supply
3. Power Switch
4. Control Transformer
(115VAC/24VAC)
5. 1A Fuse (Control Box)
6. Control Board
See "II.C. Control Board Check"
7. Control Switch
8. BC1 (infrared sensor)
9. BC2 (mechanical backup)
1. Control Board
2. Inlet Water Valve
3. Float Switch
4. Drain Valve
5. Hoses
Startup
a) Unplugged, off, blown fuse, or tripped breaker.
b) Not within specifications.
c) Loose connection.
d) Bad contacts.
a) Off, tripped breaker
b) Not within specifications.
c) Loose connection.
d) Bad contacts.
a) Water supply off or improper water pressure.
b) External water filters clogged.
a) "OFF" position.
b) Bad contacts.
a) Coil winding open or shorted.
a) Blown.
a) In alarm.
b) Defective
a) In "DRAIN" position.
b) Bad contacts.
a) No power, lens dirty, or defective.
b) Control board dip switch 7 off.
a) Tripped with bin filled with ice (9-beep alarm).
b) Proximity switch stuck open.
c) Actuator paddle does not move freely.
Fill Cycle
a) No power to inlet water valve.
b) No power to float switch or not reading float switch condition.
a) Screen or orifice clogged.
b) Coil winding opened.
a) Float does not move freely.
b) Defective.
a) Valve seat clogged and water leaking.
a) Disconnected.
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