Hoshizaki DCM-500BAH-OS, DCM-500BWH-OS service manual C. Diagnostic Charts, No Ice Production

C. Diagnostic Charts

1. No Ice Production

Problem	Possible Cause				Remedy
[1] The icemaker will not	a) Power Supply		1.	Off, blown fuse, or	1.	Turn on, replace, or reset.
start. (Fill Cycle)				tripped breaker.
			2. Loose connection.		2. Tighten.
			3. Bad contacts.		3. Check for continuity and
						replace.
			4. Not within		4. Refer to nameplate and
				specifications.		correct.
	b) Water Supply		1.	Water supply off or	1.	Check and get
				pressure too low.		recommended pressure.
	c) Power Switch		1.	"OFF" position.	1.	Move to "ON" position.
		(Control Box)
			2. Bad contacts.		2. Check for continuity and
						replace.
	d) Door Switch		1.	Door switch not	1.	Engage door switch.
				engaged.
			2. Bad contacts.		2. Check for continuity and
						replace.
	e) Power Protect Relay		1.	Voltage not within	1.	Refer to nameplate and
				specifications.		correct.
			2. Bad contacts.		2. Check for continuity and
						replace.
	f)	Transformer	1.	Coil winding open.	1.	Replace.
	g) Fuses (2)		1.	Blown.	1.	Check for short circuit and
						replace.
	h) Control Switch		1.	"OFF" or "DRAIN"	1.	Move to "ICE" position.
				position.
			2. Bad contacts.		2. Check for continuity and
						replace.
	i)	Water Control Relay	1.	Bad contacts.	1.	Check for continuity and
						replace.
			2. Coil winding open.		2. Replace.
	j)	Inlet Water Valve	1.	Mesh filter or orifice	1.	Clean.
				clogged.
			2. Coil winding open.		2. Replace.
			3. Wiring to inlet water		3. Check for loose or open
				valve.		connection. Repair or
						replace.
	k) Float Switch		1.	Bad contacts.	1.	Check for continuity and
						replace.
			2. Float does not move		2. Clean or replace.
				freely.
	l)	Bin Control	1.	Open.	1.	Bin full, check for
						continuity on proximity
						switch.
			2. Actuator sticking.		2. Adjust or replace.
			3. Proximity switch open.		3. Replace.

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