Hoshizaki ROX-20TB2-U service manual EE1

Lamp	Error code	Problem	Check	Possible cause	Remedy
Add salt	—	(Continued)	Salt water pump	Defective	Repair or replace
water				Improper stroke dial	Set to "E" (far to
				setting	left)
				Supply line open circuit	Correct
				Signal line open circuit	Correct
Error	E11	Flow control valve (flow	Water supply line	Water failure	Recover water
		rate sensor) detected			supply
		flow rate below 0.13 gal/	Electrolyzed	Blocked	Unblock
		min (0.5 L/min) for 10	water outlet
		sec with water valve on	Joint hose	Crushed or bent	Correct
				Scaled	Replace
			Filter	Clogged	Unclog
			Water valve	Defective	Repair or replace
				Clogged	Unclog
				Supply line open circuit	Correct
			Flow rate sensor	Defective	Repair or replace
				Clogged	Unclog
				Signal line open circuit	Correct
Error	E14	Flow rate sensor	Water valve	Defective	Repair or replace
		detected flow rate above		Clogged	Unclog
		0.13 gal/min (0.5 L/min)	Flow rate sensor	Defective	Repair or replace
		for 10 sec with water
		valve off
Error	E53	Electrolytic current	Current sensor	Defective	Repair or replace
		stayed below 0.5A for 2		12V DC line open	Correct
		sec		circuit
				Signal line open circuit	Correct
			Switching	Defective	Repair or replace
			regulator
			Main control	Defective	Repair or replace
			board	Loose chip insertion	Correct
Error	E61	Flow switching did not	Gear motor	Defective	Repair or replace
		complete within 30 sec		Overrun	Lubricate motor
					shaft
			Location	Defective	Repair or replace
			microswitch
			Direction	Defective	Repair or replace
			microswitch
—	E74	Thermistor open circuit	Thermistor	Defective	Repair or replace
		[-22°F (-30°C)] or short
		circuit [140°F (60°C)]
		was detected
—	E82	Upper float switch turned	Float switch	Defective	Repair or replace
		on and lower float switch
		turned off
—	EE1	Model setting connector	Main control	Incorrect wiring	Correct
		lost or wrong	board	connector
—	EF0	EEPROM memory	Main control	Defective	Replace
		element error	board

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