Hoshizaki KM-515MAH Service Manual page 36

Problem
[1] The icemaker will not
start. (continued)
[2] Water continues to
be supplied, and the
icemaker will not
start.
[3] Compressor will
not start or stops
operating.
Possible Cause
g) Transformer
h) Wiring to Control Board 1. Loose connections or
i) Interlock Switch
(Cleaning Valve)
j) Thermistor
k) Hot Gas Valve
l) Inlet Water Valve
m)Control Board
a) Float Switch
b) Control Board
a) Magnetic Contactor
b) Start Capacitor or Run
Capacitor
c) Internal Overload
Protector Open (check
1 through 3 to the right
and d through f below)
1. Coil winding opened
or shorted.
open.
1. Open position.
2. Bad contacts.
1. Leads shorted or
opened 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. Mesh filter or orifice
gets clogged and
water supply cycle
does not finish.
2. Coil winding opened.
3. Wiring to water valve. 3. Check for loose
1. Defective or in alarm. 1. See "II.C.4. Control Board
1. Connector
disconnected.
2. Defective switch.
3. Float does not move
freely.
1. Defective.
1. Bad contacts.
2. Coil winding opened.
1. Defective.
1. Loose terminal.
2. Voltage.
3. Dirty condenser.
36
Remedy
1. Replace.
1. Check for continuity and
replace.
1. Move to closed position.
2. Check for continuity and
replace.
1. See "II.D. Harvest Control
– Thermistor."
1. Check for hot gas valve
stuck open and replace.
1. Clean.
2. Replace.
connection or open, and
replace.
Check Procedure."
1. Reconnect.
2. Check and replace.
3. Clean or replace.
1. See "II.C.4. Control Board
Check Procedure."
1. Check for continuity and
replace.
2. Replace.
1. Replace.
1. Tighten or replace.
2. Check and correct.
3. Clean.