Hoshizaki JWE-620UA-6B service manual Auxiliary Code A-1 and Later

13

Dishwasher Sequence Flow Chart

JWE-620UA-6B

Cycle Steps
	1. Auto Fill Cycle	2. Ready Cycle (Unit Inactive)	3. Wash Cycle			4. Rinse Cycle
	• DS must be closed for cycle to			Cycle started by door switch or			Starts after wash cycle. If mode is
	start.			"STANDBY/CLEANING" button			set to "RINSE," can also be started
	• RPM time: (service menu item 03).			(service menu item 11).			by door switch or "STANDBY/
	• RPM energized/de-energized						CLEANING" button (service menu
	count: (service menu item 07).			Wash Cycle Time	5-sec.		item 11).
	• BTH is de-energized during Auto			(service menu	Dwell		Rinse Cycle Time	1-sec.
	Fill Cycle.			item 01 (Standard	Time		(service menu	Dwell
	• WTH energized when WT WLS			Mode) or service			item 03)	Time
	closed.			menu item 02
Initial startup				(Long Mode))

begins here	WT WLS check.	WT WLS		WT WLS closed
	Go to Ready	check.			BT WLF/S check	BT WLF/S check
	Cycle if closed.			WTH energized when WT water temp.	Cycle extended if open	Display lights
	WV energized/de-energized by			is at wash temp. setpoint (service	(display lights rotate)	rotate if open
				menu item 04) or lower	WPM energized (power supplied to DFT	RPM energized (power supplied to RFT
	BT WLF/S
	RPM energized (time=service menu			WTH de-energized when WT water	when WPM energized)	when RPM energized)
	item 03)			temp. is 5°F (3°C) above wash temp.	WPM de-energized when unit enters	RPM de-energized when unit enters
				setpoint (service menu item 04)	5-sec. dwell time (power cut to DFT when	1-sec. dwell time (power cut to RFT when
				BTH energized when BT water temp.	WPM de-energized)	RPM de-energized)
				3°F (2°C) below rinse temp. setpoint	WTH energized when WT water temp. at	WTH energized when WT water temp. at
				(service menu item 05) or lower	wash temp. setpoint (service menu item	wash temp. setpoint (service menu item
				BTH de-energized when BT water	04) or lower	04) or lower
				temp. reaches rinse temp. setpoint	WTH de-energized when WT water temp.	WTH de-energized when WT water temp.
	"A1" error appears	WT WLS open		(service menu item 05)	is 5°F (3°C) above wash temp. setpoint	is 5°F (3°C) above wash temp. setpoint
				WV energized/de-energized by	(service menu item 04)	(service menu item 04)
	in display.			BT WLF/S	BTH energized when BT water temp. 3°F	BTH energized when BT water temp. 3°F
				BTH de-energized when BT WLF/S	(2°C) below rinse temp. setpoint (service	(2°C) below rinse temp. setpoint (service
				opens	menu item 05) or lower	menu item 05) or lower
				WTH de-energized when WT WLS	BTH de-energized when BT water temp.	BTH de-energized when BT water temp.
				opens	reaches rinse temp. setpoint (service	reaches rinse temp. setpoint (service
					menu item 05)	menu item 05)
Legend:
BT–internal booster tank					WV energized/de-energized by BT WLF/S WV energized/de-energized by BT WLF/S
BTH–internal booster tank heater					BTH de-energized when BT WLF/S	BTH de-energized when BT WLF/S
BUWLF/S–backup water level float switch					opens	opens
BZ–buzzer					WTH de-energized when WT WLS opens	WTH de-energized when WT WLS opens
CB–control board
DFT–detergent feeder terminals
DS–door switch
			Note: If DS opens during the auto fill, wash, or rinse cycle, BZ beeps, the corresponding cycle lamp goes off and RPM or WPM
RFT–rinse aid feeder terminals				de-energize. If DS opens during wash or rinse cycle, "READY" lamp comes on. When DS closes again (if service menu item
RPM–rinse pump motor				11 is set for door start), the mode lamp starts flashing. If in auto fill cycle, the unit resumes cycling RPM for the remaining
WLF/S–water level float switch				number of times determined by the auto fill cycle setting. If the unit was in a wash or rinse cycle, the unit starts a new cycle
WLS–water level sensor				in the selected mode.
WPM–wash pump motor
WT–wash tank
WTH–wash tank heater
WV–inlet water valve

b) Auxiliary Code A-1 and Later