Hoshizaki F-300BAF - Manual (Page 30)

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Problem Possible Cause Remedy
j) Water Control Relay 1. Bad contacts. 1. Replace.
2. Open coil. 2. Replace.
k) Water Valve 1. Coil winding opened. 1. Replace.
l) Shut-off Valve 1. Closed. 1. Open.
2. Water failure. 2. Wait until water is
supplied.
m)Plug and Receptacle
(Control Box)
1. Disconnected. 1. Connect.
2. Loose terminal. 2. Repair terminal
connection.
[2] Water does not stop,
and the gear motor
will not start.
a) Float Switch 1. Bad contacts. 1. Check for continuity and
replace.
2. Float does not move
freely.
2. Clean or replace.
b) Water Control Relay 1. Contact fused. 1. Replace.
2. Coil winding opened. 2. 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 gear
motor will not start.
a) Bin Control 1. Open 1. Bin full, check for
continuity on proximity
switch.
b) Water Control Relay 1. Low water safety
circuit open
(bad conacts ).
1. Replace relay.
c) Control Timer
(Printed Circuit Board)
1. Fails to operate gear
motor relay.
1. Check water control relay
circuit.
d) Gear Motor Fuse 1. Blown. 1. Check gear motor
amperage, bearing
wear (see "V. F. 1. Upper
Bearing Wear Check"),
supply voltage.
e) Gear Motor Thermal
Protector
1. Open. 1. Check gear motor
bearings, voltage supply.
f) Gear Motor 1. Open windings. 1. Replace gear motor.
2. Locked bearings 1. Replace gear motor.
[4] Gear motor starts,
but compressor will
not start or operates
intermittently.
a) Gear Motor Protect
Relay
1. Open coil. 1. Replace.
2. Open contacts. 2. Replace.
b) Timer Board Relay 1. Bad contacts. 1. Check for continuity and
replace.
2. Coil winding opened. 2. Replace timer.
c) Starter 1. Bad contacts. 1. Check for continuity and
replace.
2. Coil winding opened. 2. Replace.
3. Loose connections. 3. Tighten.
d) Start Capacitor or Run
Capacitor
1. Defective. 1. Replace.