Hoshizaki KM-320MAH - Manual (Page 29)

29
Problem Possible Cause Remedy
j) Water Supply Line 1. Water supply off and
water supply cycle
does not finish.
1. Check and get
recommended pressure.
2. Condenser water
pressure too low
or off and pressure
control opens and
closes frequently to
finally operate high
temperature safety.
2. Check and get
recommended pressure.
k) Water Solenoid 1. Mesh filter or orifice
gets clogged and
water supply cycle
does not finish.
1. Clean.
2. Coil winding opened. 2. Replace.
3. Wiring to water valve. 3. Check for loose
connection or open, and
replace.
l) Controller Board 1. Defective. 1. See "II.B.5. Checking the
Controller Board."
m)Interlock Switch
(Cleaning Valve)
1. OFF Position 1. Move to ON position.
2. Bad contacts. 2. Check for continuity and
replace.
[2] Water continues to
be supplied, and the
icemaker will not
start.
a)Float Switch 1. Connector
disconnected.
1. Place in position.
2. Leads opened or
defective switch.
2. Check and replace.
3. Float does not move
freely.
3. Clean or replace.
b)Controller Board 1. Defective. 1. Replace.
c) Contactor 1. Open coil or contacts
worn.
1. Replace.
[3] Compressor will
not start or stops
operating.
a)Wash Switch 1. WASH position. 1. Move to ICE position.
2. Bad contacts. 2. Check and replace.
b)High Pressure
Controller
1. Dirty air filter or
condenser.
1. Clean.
2. Ambient or condenser
water temperature too
warm.
2. Reduce temperature.
3. Refrigerant
overcharged.
3. Recharge.
4. Condenser water
pressure too low or off.
(water-cooled model)
4. Check and get
recommended pressure.
5. Fan not operating.
(except water-cooled
model)
5. See chart A.[6]
6. Refrigerant line or
components plugged.
6. Clean and replace drier.