Hoshizaki FS-1022MLH-C service manual Control Board Layout

1. Control Board Layout

"F-A" Control Board

•K9 Connector (5VDC)

		#1 & #2 Control Switch
		Open: Icemaking
• "GM" LED	• "COMP" LED	Closed: Drain
(X2 Relay)	(X1 Relay)		#3 & #4 Jumper
Gear Motor	Pump-Down
Evaporator Heater	Solenoid Valve			#5 & #6 Gear Motor Protect
				Relay Circuit

• K1 Connector	• "SERVICE" Button
	(Ice Purge Cycle Bypass)
(115VAC)
#3 115VAC Input
#2 Gear Motor,	• K8 Connector
Evaporator	(24VAC and 5VDC)
Heater	#1 Transformer 24VAC Input
• "FLUSH" LED	#2 Transformer 24VAC Neutral
	#3 & #4 Mechanical Backup Bin
(X3 Relay)
	Control (5VDC)
Drain Valve
	#5 Float Switch Common (5VDC)
• K2 Connector
	#6 Upper Float Switch
(24VAC)	#7 Lower Float Switch
#10 Drain Valve
#9 Transformer
24VAC Input
#8 Inlet Water Valve	• K7 Connector-Open
#7 Transformer
24VAC Input
• "WTRIN" LED	• "POWER OK" LED
(X4 Relay)
Inlet Water Valve
	• S1 Dip Switch

Water Dispensing
Valve, Agitation
Motor, and Ice
Dispensing LEDs		• K6 Connector (20VDC)
(not used on this		Infrared Sensor Bin Control
model)		Dark Blue
		White (signal) (common)
• J2 Connector-Open	• K3 Connector-Open	Brown (ground)

•K4 Connector-Open

•K5 Connector-Open

"F-A" Control Board

Part Number 2A4296-01

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