Hoshizaki DM-200B service manual IV. Service Diagnosis, Problem Possible Cause Remedy

IV. Service Diagnosis

Problem

Possible Cause

Remedy

[1] No ice dispensed.	a) Power Supply	1. Off at breaker or cord	1. Turn on or plug in cord.
		unplugged.
		2. Loose connection.	2. Tighten.
		3. Bad contacts.	3. Check for continuity and
			replace.
	b) Dispense Switch	1. Bad contacts.	1. Check for continuity and
			replace.
		2. Loose connection.	2. Tighten.
	c) Gear Motor	1. Thermal protector is	1. Allow to cool.
		tripped.
		2. Gear motor winding	2. Replace.
		opened.
		3. Bearing worn out.	3. Replace.
		4. Wiring to gear motor.	4. Check for loose
			connection or open
			circuit, and replace wiring
			as needed.
		5. Defective capacitor.	5. Replace.
		6. Agitator rotates in	6. Check leads and reverse
		reverse direction.	the connections.
	d) Solenoid	1. Solenoid winding	1. Replace.
		open.
		2. Wiring to solenoid.	2. Check for loose
			connection or open
			circuit, and replace wiring
			as needed.
		3. Overload due to	3. After tightening, apply
		loosening screws.	thread sealant to the
			parts.
	e) Mechanism	1. Chain out of position	1. Place in position or
		or loose.	tighten.
		2. Corrosion.	2. Apply oil.
		3. Key of sprocket is not	3. Place in position.
		in position.
		4. Bad alignment of	4. Readjust.
		sprocket.
		5. Foreign matter	5. Remove foreign matter.
		interrupting agitator.
	f) Ice Storage	1. No ice or little ice in	1. Fill bin with ice.
		storage bin.
		2. Ice bridge or block	2. Break with a poker.
		formed.
[2] No water dispensed.	a) Power Supply	1. Off at breaker or cord	1. Turn on or plug in cord.
		unplugged.
		2. Loose connection.	2. Tighten.

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