Hoshizaki KM-1301SRH/3, KM-1301SAH/3, KM-1301SWH/3 service manual 1Freeze cycle time is

Problem	Possible Cause			Remedy
[1]Freeze cycle time is	f)	Thermistor	1. Loose or	1. Reattach or connect. See
too long. (continued)			disconnected.	"IV.E. Thermistor Check."
	g) Refrigerant Charge		1. Low charge.	1. Check for leaks. Recover,
				repair, evacuate, and
				recharge.
	h) Expansion Valve		1. Bulb loose.	1. Secure bulb.
			2. Operating erratically.	2. Check and replace.
	i)	Control Board	1. Defective.	1. See "IV.B. Control Board
				Check."
[2]All ice formed on	a) Evaporator		1. Scaled up.	1. Clean.
evaporator does not			2. Damaged.	2. Replace.
fall into bin in harvest
	b) Ambient and/or Water		1. Too cool.	1. Increase temperature.
cycle.		Temperature
	c) Water Supply Line		1. Water pressure too	1. Check and get
			low.	recommended pressure.
	d) Water System		1. Water supply line	1. Increase water line size.
			too small; requires
			1/2" OD line dedicated
			per machine.
			2. Water filter clogged or	2. Replace filter or install a
			flow rate too small.	higher flow rate filter.
	e) Inlet Water Valve		1. Dirty mesh filter or	1. Clean.
			orifice.
			2. Diaphragm does not	2. Check for water leaks with
			close.	icemaker off.
	f)	Spray Tubes	1. Dirty.	1. Clean.
			2. Out of position.	2. Place in position.
	g) Thermistor		1. Loose or	1. Reattach or connect. See
			disconnected.	"IV.E. Thermistor Check."
	h) Hot Gas Valve		1. Coil winding open.	1. Replace.
			2. Plunger does not	2. Replace.
			move.
			3. Wiring to hot gas	3. Check for loose
			valve.	connection or open, and
				replace.
	i)	Expansion Valve	1. Open.	1. Check and replace.
	j)	Liquid Line Valve	1. Continues to open in	1. Check operation in harvest
		(if applicable)	harvest cycle.	cycle and replace.
	k) Control Board		1. Harvest timer is set	1. Adjust longer, referring to
			too short.	"II.C.3.b) Harvest Timer
				(S4 dip switch 1 & 2)."
			2. Defective.	2. See "IV.B. Control Board
				Check."
	l)	Refrigerant Charge	1. Low Charge	1. Check for leaks. Recover,
				repair, evacuate, and
				recharge.
	m)Water Regulating Valve		1. Leaking by in harvest.	1. Check and replace.
		(water-cooled model)

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