Hoshizaki DCM-750BWH-OS, DCM-750BAH-OS service manual Problem Possible Cause Remedy

Problem	Possible Cause		Remedy
[1] The icemaker will	m)High Pressure Switch	1. Bad contacts.	1. Check for continuity and
not start. (Fill Cycle)			replace.
(continued)
		2. Dirty air filter or	2. Clean.
		condenser.
		3. Ambient or condenser	3. Reduce temperature.
		water temperature too
		warm.
		4. Refrigerant	4. Recover, evacuate, and
		overcharged.	recharge.
		5. Fan not operating	5. See "3.[2]a) Fan Motor."
		(except water-cooled
		model).
		6. Refrigerant line or	6. Remove the restriction or
		components restricted.	component and replace
			the drier.
		7. Condenser water	7. Check and get
		pressure too low or off	recommended pressure.
		(water-cooled model
		only).
		8. Water regulating	8. Adjust it lower.
		valve set too high
		(water‑cooled model
		only).
	n) Plug and Receptacle	1. Disconnected.	1. Connect.
	(Control Box)
		2. Loose terminal.	2. Repair terminal
			connection.
	o) Control Board	1. Defective.	1. See "II.D.4. Control Board
			Check Procedure."
[2] Fill cycle will not	a) Water Supply	1. Water supply off or	1. Check and get
terminate.		pressure too low.	recommended pressure.
	b) Float Switch	1. Connector	1. Reconnect.
		disconnected.
		2. Float does not move	2. Clean or replace.
		freely.
		3. Defective switch.	3. Check and replace.
	c) Water Control Relay	1. Contacts sticking.	1. Replace.
		2. Coil winding open.	2. Replace.
	d) Drain Valve	1. Valve seat won't seal	1. Clean or replace.
		and water leaking.
	e) Hoses	1. Disconnected or	1. Reconnect or replace.
		damaged.
	f) Control Board	1. Defective.	1. See "II.D.4. Control Board
			Check Procedure."

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