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C. Sequence of Operation Flow Chart
a) Auxiliary Code U-1, U-2, U-3, V-0, A-0
Dishwasher Sequence Flow Chart
JWE-620UA-6B
1. Auto Fill Cycle
• DS must be closed for cycle to
start.
• RPM time: (service menu item 03).
• RPM energized/de-energized
count: (service menu item 07).
• BTH and WTH are de-energized
during Auto Fill Cycle.
Cycle Steps
2. Ready Cycle (Unit Inactive)
WV energized/de-energized by
BT WLF/S
RPM energized (time=service menu
item 03)/de-energized (10 sec.)
(power supplied/cut to RFT as RPM
energized/de-energized)
WT WLS check.
Go to Ready
Cycle if closed.
Initial startup
begins here
Wash Cycle Time
(service menu
item 01 (Standard
Mode) or service
menu item 02
(Long Mode))
BT WLF/S check
Cycle extended if open
(display lights rotate)
"A1" error appears
in display.
Legend:
BT–internal booster tank
BTH–internal booster tank heater
BUWLF/S–backup water level fl oat switch
BZ–buzzer
CB–control board
DFT–detergent feeder terminals
DS–door switch
RFT–rinse aid feeder terminals
RPM–rinse pump motor
WLF/S–water level fl oat switch
WLS–water level sensor
WPM–wash pump motor
WT–wash tank
WTH–wash tank heater
WV–inlet water valve
Note: If DS opens during the auto fi ll, wash, or rinse cycle, BZ beeps, the corresponding cycle lamp goes off and RPM or WPM
de-energize. If DS opens during wash or rinse cycle, "READY" lamp comes on. When DS closes again (if service menu item
11 is set for door start), the mode lamp starts fl ashing. If in auto fi ll cycle, the unit resumes cycling RPM for the remaining
number of times determined by the auto fi ll cycle setting. If the unit was in a wash or rinse cycle, the unit starts a new cycle
in the selected mode.
WT WLS
check.
WT WLS closed
WTH energized when WT water temp.
at wash temp. setpoint (service menu
item 04) or lower
WTH de-energized when WT water
temp. is 5°F (3°C) above wash temp.
setpoint (service menu item 04)
BTH energized when BT water temp.
3°F (2°C) below rinse temp. setpoint
(service menu item 05) or lower
BTH de-energized when BT water
temp. reaches rinse temp. setpoint
(service menu item 05)
WV energized/de-energized by
BT WLF/S
BTH de-energized when BT WLF/S
opens
WTH de-energized when WT WLS
opens
WT WLS open
3. Wash Cycle
Cycle started by door switch or
"STANDBY/CLEANING" button
(service menu item 11).
WPM energized (power supplied to DFT
when WPM energized)
WPM de-energized when unit enters
5-sec. dwell time (power cut to DFT when
WPM de-energized)
WTH energized when WT water temp. at
wash temp. setpoint (service menu item
04) or lower
WTH de-energized when WT water temp.
is 5°F (3°C) above wash temp. setpoint
(service menu item 04)
BTH energized when BT water temp. 3°F
(2°C) below rinse temp. setpoint (service
menu item 05) or lower
BTH de-energized when BT water temp.
reaches rinse temp. setpoint (service
menu item 05)
WV energized/de-energized by BT WLF/S
BTH de-energized when BT WLF/S
opens
WTH de-energized when WT WLS opens
5-sec.
Dwell
Time
4. Rinse Cycle
Starts after wash cycle. If mode is
set to "RINSE," can also be started
by door switch or "STANDBY/
CLEANING" button (service menu
item 11).
Rinse Cycle Time
(service menu
item 03)
1-sec.
Dwell
Time
RPM energized (power supplied to RFT
when RPM energized)
RPM de-energized when unit enters
1-sec. dwell time (power cut to RFT when
RPM de-energized)
WTH energized when WT water temp. at
wash temp. setpoint (service menu item
04) or lower
WTH de-energized when WT water temp.
is 5°F (3°C) above wash temp. setpoint
(service menu item 04)
BTH energized when BT water temp. 3°F
(2°C) below rinse temp. setpoint (service
menu item 05) or lower
BTH de-energized when BT water temp.
reaches rinse temp. setpoint (service
menu item 05)
WV energized/de-energized by BT WLF/S
BTH de-energized when BT WLF/S
opens
WTH de-energized when WT WLS opens
BT WLF/S check
Display lights
rotate if open