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 and WTH are de-energized

 

 

 

 

 

(service menu

 

 

Dwell

 

 

 

Rinse Cycle Time

 

 

 

 

1-sec.

 

 

 

 

 

during Auto Fill Cycle.

 

 

 

 

 

item 01 (Standard

 

 

Time

 

 

 

(service menu

 

 

 

 

Dwell

 

 

 

 

 

 

 

 

 

 

Mode) or service

 

 

 

 

 

 

item 03)

 

 

 

 

Time

 

 

 

 

 

 

 

 

 

 

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

at wash temp. setpoint (service menu

(display lights rotate)

rotate if open

 

 

 

 

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)/de-energized (10 sec.)

temp. is 5°F (3°C) above wash temp.

WPM de-energized when unit enters

RPM de-energized when unit enters

 

 

 

 

(power supplied/cut to RFT as RPM

setpoint (service menu item 04)

5-sec. dwell time (power cut to DFT when

1-sec. dwell time (power cut to RFT when

 

 

 

 

energized/de-energized)

BTH energized when BT water temp.

WPM de-energized)

RPM de-energized)

12

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

a) Auxiliary Code U-1, U-2, U-3, V-0, A-0

C. Sequence of Operation Flow Chart

Page 17
Image 17
Hoshizaki JWE-620UA-6B service manual Sequence of Operation Flow Chart