Hoshizaki KM-251BAH Service Manual page 24

Problem
[2] Water continues to
be supplied, and the
icemaker will not
start.
[3] Compressor will
not start or stops
operating.
Possible Cause
f) Transformer
g) Wiring to Control Board 1. Loose connections or
h) Thermistor
i) Hot Gas Valve
j) Water Supply Line
k) Water Valves
l) Control Board
m)Control Switch
a) Float Switch
b) Control Board
c) Low Water Safety
a) Magnetic Contactor
b) Start Capacitor
5. Fan not operating.
6. Refrigerant line or
components plugged.
1. Coil winding opened
or shorted.
open.
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. Water supply off and
water supply cycle
does not finish.
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.6. Control Board
1. WASH position.
2. Bad contacts.
1. Connector
disconnected.
2. Leads opened or
defective switch.
3. Float does not move
freely.
1. Defective.
1. Loose hose.
1. Bad contacts.
2. Coil winding opened.
1. Defective.
24
Remedy
5. See chart 1.[6]
6. Clean and replace drier.
1. Replace.
1. Check for continuity and
replace.
1. See "II.C.3. Controls and
Adjustments, b) Harvest
Control."
1. Check for hot gas valve
stuck open and replace.
1. Check and get
recommended pressure.
1. Clean.
2. Replace.
connection or open, and
replace.
Check Procedure."
1. Move to ICE position.
2. Check and replace.
1. Place in position.
2. Check and replace.
3. Clean or replace.
1. Replace.
1. Check and reattach.
1. Check for continuity and
replace.
2. Replace.
1. Replace.