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Service Tips – Fault Codes (1)
DISHWASHER TEST PROGRAM ERROR CODES (on 2&3-digit digital displays):
0- No faults
1- Aqua Sensor (Sensotronic) fault
2- Heating system fault (heater, Hi-Limit, flow switch, NTC, control heater relay)
4- Water filling fault
8- NTC (temperature sensor) fault
16- Water switch fault
00
000
TIP: Fault codes add up for multiple faults
(e.g. heating + water filling fault = 2 + 4 = 6
DISHWASHER TEST PROGRAM ERROR CODES (on 2&3-digit digital displays):
F- Water filling fault (underfill, overfill or water in the base)
2H- Last wash cycle too long (> 99 minutes). Can be cold inlet water or heating
system fault (heater, Hi-Limit, flow switch, NTC, control module heater relay).
F- Delay Start feature (not a fault code)
00
000
HINT: Apexx
heater runs
during steps
05 - 08.
Press “-“
button to skip
to test 05 to
measure
heater amp
draw.
DISHWASHER TEST PROGRAM ERROR CODES (on lower
line of full text Apexx SH 99 displays):
S3 - No faults
A – Aqua Sensor (red) fault
B – Aqua Sensor (green) fault
E – Water switch fault (no pulses detected)
F – Water filling fault
G – Water switch fault (won’t stop running)
H – Heating system fault (heater, Hi-Limit, flow switch,
NTC, control module heater relay)
K- NTC fault (short-circuited or open-circuited)
Xx – Test program step count (testing done when = 00)
TIP: Top line shows wash cycle & bottom line shows fault code.
◄ S- - 3- - - - - - - - - - - - - - - - - ►
Start
►
In Cycle 0 - - - - - - - - - - - - - - ►
S3
◄ STEP
S3 00
S3 00
HINT: Dishwasher test program heat water to
150°F, so test programs will generally run > 20
minutes for incoming water temperatures ~ 120°F
HINT: Open door to select test
program for fully-integrated models,
then close door to run program.
NOTE: Flow through
heaters heat water ~
2°F/minute.