Hoshizaki KM-650MRH, KM-650MAH, KM-650MWH service manual Problem Possible Cause Remedy

Problem	Possible Cause		Remedy
[1] The icemaker will not	m)Interlock Switch	1. OFF position.	1. Move to ON position.
start. (continued)	(Cleaning Valve)
		2. Bad contacts.	2. Check for continuity and
			replace.
	n)Wash Switch	1. WASH position.	1. Move to ICE position.
		2. Bad contacts.	2. Check 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)Control Board	1. Defective.	1. Replace.
[3] Compressor will	a)Magnetic Contactor	1. Bad contacts.	1. Check for continuity and
not start or stops			replace.
operating.
		2. Coil winding opened.	2. Replace.
	b)Start Capacitor or Run	1. Defective.	1. Replace.
	Capacitor
	c) Internal Overload	1. Loose terminal.	1. Tighten or replace.
	Protector Open (check
	1 through 3 to the right	2. Voltage.	2. Check and correct.
	and d through f below)
		3. Dirty condenser.	3. Clean.
	d)Starter	1. Bad contacts.	1. Check and replace.
		2. Coil winding opened.	2. Replace.
	e)Compressor	1. Wiring to compressor.	1. Check for loose
			connection or open, and
			replace.
		2. Defective.	2. Replace.
		3. Protector tripped.	3. Reduce temperature.
	f) Control Board	1. No power to contactor.	1. See "II.C.4. Control Board
			Check Procedure."
[4] Water continues to	a)Inlet Water Valve	1. Diaphragm does not	1. Check for water leaks with
be supplied in freeze		close.	icemaker off.
cycle.
	b)Control Board	1. Defective.	1. See "II.C.4. Control Board
			Check Procedure."
[5] No water comes from	a)Water Supply Line	1. Water pressure too	1. Check and get
spray tubes. Water		low and water level in	recommended pressure.
pump will not start, or		water tank too low.
freeze cycle time is
	b)Inlet Water Valve	1. Dirty mesh filter or	1. Clean.
too short.
		orifice and water level
		in water tank too low.
	c) Water System	1. Water leaks.	1. Check connections for
			water leaks, and replace.

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