65
VIII. Troubleshooting
VIII. Troubleshooting
(continued)
(continued)
Problem
Possible Cause
Suggested Action
9
Circulation motor (
m2
) failed.
9
Turn off dishwasher and replace motor.
9
Timer (
SHU 30/40 models
) or
module (
all other models
) failed.
9
Check voltage at and wiring to timer or
module. Turn off dishwasher and replace faulty
timer or module (
for SHU/I 43/53 models,
install existing module jumper onto new
module
).
9
Hi-Limit (
f5
) tripped and failed to
reset.
9
Run test program & measure current to
dishwasher. If current
≈
11A, Hi-Limit is OK. If
not (and for all other models), turn off
dishwasher and measure resistance @ Hi-Limit
terminals (
≈
.3
Ω
). Replace faulty Hi-Limit.
9
NTC (temperature sensor) failed.
9
Turn off dishwasher and check resistance
of NTC (
≈
55 k
Ω
@ 72
o
F). Replace faulty NTC.
9
Heater (
r1
) failed.
9
Run test program & measure current to
dishwasher. If current
≈
11A, heater is OK. If
not (and for all other models), turn off
dishwasher and measure heater resistance (
≈
11
Ω
). Replace faulty heater.
9
Water flow switch (
e5
) failed.
9
Run test program & measure current to
dishwasher. If current
≈
11A, flow switch is
OK. If not, remove flow switch microswitch,
close its contacts & measure its resistance (
≈
.4
Ω
). Replace faulty flow switch.
9
Timer (
SHU 30/40 models
) or
module (
all other models
) failed.
9
Check voltage at and wiring to timer or
module. Turn off dishwasher and replace faulty
timer or module (
for SHU/I 43/53 models,
install existing module jumper onto new
module
).
9
Dishwasher cycle
runs too long, yet
dishwasher washes,
rinses and shuts off
OK.
9
Customer hot water supply isn't
hot enough (< 140
o
F/ 60
o
C).
9
Adjust hot water supply according to local
codes.
9
Blocked or clogged upper or
lower spray arms.
9
Check spray arms – clean or replace as
needed.
9
Excessive foaming.
9
See
Suds or foam remains in
dishwasher
on page xx.
9
Water doesn't
circulate.
9
Water doesn’t
heat up properly.
9
Water leaks from
front of dishwasher.
NOTE:
For minor problems from improper usage or lack of maintenance, please refer
customer to the
Self-Help
chart in their
Use and Care Manual
.
NOTE:
Use a multimeter with temperature, voltage/resistance and current
(ampere) probes. Do all resistance checks with power turned
off
. Identify each wire
color and location at the control module before looking at this chart.
NOTE:
You will need a T20 Torx screwdriver and may need #1/ #2 flat blade
screwdrivers and a pair of needlenose pliers. Many parts can be snapped out without
using tools.
HINT:
Symbols for parts (e.g. " f3" or "e6 ") refer to those on circuit/wiring
diagrams.