Hoshizaki KM-1301SAH/3 Service Manual page 58

Problem
[1] The icemaker will not
start. (continued)
[2] Fill cycle will not
terminate.
Possible Cause
h) Transformer
i) Wiring to Control Board 1. Loose connections or
j) Interlock Switch
(Cleaning Valve)
k) Thermistor
l) Hot Gas Valve
m)Control board green
"BC CLOSED" LED
off and/or yellow "BC
OPEN" LED on
n) Inlet Water Valve
o) Float Switch
p) Control Board
a) Water Supply
b) Float Switch
c) Control Board
1. Coil winding open or
shorted.
open.
1. Open position.
2. Bad contacts.
1. Leads shorted or open
and high temperature
or harvest backup
timer safety operates
(1 beep or 2 beep
alarm).
1. Continues to open
in freeze cycle and
freeze timer safety
operates (3 beep
alarm).
1. K4 jumper missing or
open.
1. Mesh filter or orifice
gets clogged and
water supply cycle
does not finish.
2. Coil winding open.
3. Wiring to inlet water
valve.
1. Bad contacts.
2. Float does not move
freely.
1. Defective or in alarm. 1. See "IV.B. Control Board
1. Water supply off or
pressure too low.
1. Connector
disconnected.
2. Defective switch.
3. Float does not move
freely or switch
defective.
1. Defective.
58
Remedy
1. Replace.
1. Check for continuity and
replace.
1. Move to closed position.
2. Check for continuity and
replace.
1. See "IV.E. Thermistor
Check."
1. Check for hot gas valve
stuck open and replace.
1. Confirm jumper is in place.
Check for continuity.
1. Clean.
2. Replace.
3. Check for loose connection
or open, and replace.
1. Check for continuity and
replace.
2. Clean or replace. See "IV.
D. Float Switch Check and
Cleaning."
Check."
1. Check and get
recommended pressure.
1. Reconnect.
2. Clean or replace. See "IV.
D. Float Switch Check and
Cleaning."
2. Clean or replace. See "IV.
D. Float Switch Check and
Cleaning."
1. See "IV.B. Control Board
Check."