Hoshizaki KM-901MWH - Manual (Page 61)

61
Problem Possible Cause Remedy
[1] The icemaker will not
start. (continued)
h) Transformer 1. Coil winding open or
shorted.
1. Replace.
i) Wiring to Control Board 1. Loose connections or
open.
1. Check for continuity and
replace.
j) Interlock Switch
(Cleaning Valve)
1. Open position. 1. Move to closed position.
2. Bad contacts. 2. Check for continuity and
replace.
k) Mechanical Bin Control 1. Movement restricted. 1. Check and free.
2. Defective 2. See "IV.C.2. Mechanical
Bin Control Check and
Cleaning."
l) Thermistor 1. Leads shorted or open
and high temperature
or harvest backup
timer safety operates
(1 beep or 2 beep
alarm).
1. See "IV.E. Thermistor
Check."
m)Hot Gas Valve 1. Continues to open
in freeze cycle and
freeze timer safety
operates (3 beep
alarm).
1. Check for hot gas valve
stuck open and replace.
n) Inlet Water Valve 1. Mesh filter or orifice
gets clogged and
water supply cycle
does not finish.
1. Clean.
2. Coil winding open. 2. Replace.
3. Wiring to inlet water
valve.
3. Check for loose connection
or open, and replace.
o) Float Switch 1. Bad contacts. 1. Check for continuity and
replace.
2. Defective switch. 2. Clean or replace. See "IV.
D. Float Switch Check and
Cleaning."
p) Control Board 1. Defective or in alarm. 1. See "IV.B. Control Board
Check."
[2] Fill cycle will not
terminate.
a) Water Supply 1. Water supply off or
pressure too low.
1. Check and get
recommended pressure.
b) Float Switch 1. Connector
disconnected.
1. Reconnect.
2. Float does not move
freely or switch
defective switch.
2. Clean or replace. See "IV.
D. Float Switch Check and
Cleaning."
c) Control Board 1. Defective. 1. See "IV.B. Control Board
Check."