Hoshizaki KML-200MAE IV. Service Diagnosis No ICE Production, Problem Possible Cause Remedy

IV. SERVICE DIAGNOSIS

1. NO ICE PRODUCTION

PROBLEM	POSSIBLE CAUSE				REMEDY
[1] The icemaker	a) Power Supply	1.	“OFF” position.	1.	Move to “ON” position
will not start
		2.	Loose connections.	2.	Tighten
		3.	Bad contacts.	3.	Check for continuity and
					replace.
		4.	Voltage too high.	4.	Check and get
					recommended voltage.
	b) Fuse (Inside Fused	1.	Blown out.	1.	Check for short circuit
	Disconnect, if any)				and replace
	c) Control Switch	1.	“OFF” position.	1.	Move to “ICE” position.
		2.	Bad contacts.	2.	Check for continuity and
					replace.
	d) Bin Control	1.	Tripped with bin filled	1.	Remove ice.
	Thermostat		with ice.
		2.	Ambient temperature	2.	Increase ambient
			too cool.		temperature.
		3.	Set too warm.	3.	See “II.2.[d]
					CONTROLS AND
					ADJUSTMENTS, 5) Bin
					Control.”
		4.	Bulb out of position.	4.	Place in position.
		5.	Bad contacts or leaks	5.	Check for continuity and
			bulb.		replace.
	e) High Pressure	1.	Bad contacts.	1.	Check for continuity and
	Control				replace.
	f) Transformer	1.	Thermal fuse blown out	1.	Replace.
			or coil winding opened.
	g) Wiring to	1.	Loose connections or	1.	Check for continuity and
	Controller Board		open.		replace.
	h) Thermistor	1.	Leads short-circuit or	1.	See “II.2.[d] CONTROLS
			open and High		AND ADJUSTMENTS, 1)
			Temperature Safety		Defrost Control.”
			operates.
	i) Hot Gas Solenoid	1.	Continues to open in	1.	Check for power off in
	Valve		freeze cycle and High		freeze cycle and replace.
			Temperature Safety
			operates.
	j) Water Supply Line	1.	Water supply off and	1.	Check and get
			water supply cycle does		recommended
			not finish.		pressure.
		2.	Condenser water	2.	Check and get
			pressure too low or off		recommended
			and Pressure Control		pressure.
			opens and closes fre-
			quently to finally operate
			High Temperature Safety.
	k) Water Solenoid	1.	Mesh filter or orifice gets	1.	Clean.
			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.

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