Hoshizaki KM-320MWH, KM-320MAH service manual Problem Possible Cause Remedy

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

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