Hoshizaki F-300BAF service manual Diagnostic Charts, No Ice Production

B. Diagnostic Charts

1. No Ice Production

Problem	Possible Cause		Remedy
[1] The icemaker will not	a) Power Supply	1. Off.	1. Turn on.
start. (fill cycle, water
		2. Power cord	2. Plug into receptacle.
valve)		unplugged.
		3. Loose connection.	3. Tighten.
		4. Bad contacts.	4. Check for contintinuity and
			replace.
		5. Blown fuse.	5. Replace.
	b) Power Switch	1. OFF position.	1. Move to ON position.
	(Control Box)
		2. Bad contacts.	2. Check for continuity and
			replace.
	c) High Pressure Switch	1. Dirty air filter or	1. Clean.
		condenser.
		2. Ambient or condenser	2. Reduce temperature.
		water temperature too
		warm.
		3. Condenser water	3. Check and get
		pressure too low or off.	recommended pressure.
		(water-cooled model
		only)
		4. Water regulating valve	4. Adjust it lower.
		set too high. (water-
		cooled model only)
		5. Fan not rotating.	5. See "3. [1] a) Fan Motor.”
		6. Refrigerant	6. Recharge.
		overcharged.
		7. Refrigerant line or	7. Clean and replace drier.
		components plugged.
		8. Bad contacts.	8. Check for continuity and
			replace.
		9. Loose connections.	9. Tighten.
	d) Transformer	1. Coil winding opened.	1. Replace.
	e) Spout Safety Switch	1. Bin control not	1. Check bin control actuator
	and Relay	activating.	and proximity switch.
	f) Fuse (Control Box)	1. Blown.	1. Check for short circuit and
			replace.
	g) Bin Control	1. Actuator sticking.	1. Adjust or replace.
		2. Proximity switch open.	2. Replace.
	h) Flush Switch	1. FLUSH position.	1. Move to ICE position.
		2. Bad contacts.	2. Check for continuity and
			replace.
	i) Flush Switch Relay	1. Coil open.	1. Replace.

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