GE Monogram ZBD6400 Series Technical Service Manual page 17

6000 & 7000 Series DISHWASHERS
4.1.3 Identifying any faults that may have occurred:
The fault codes (if any saved) are displayed by flashing the relevant LEDs, (at a rate of 0.5 second on, 0.5 second off, unless
otherwise noted). Refer table below.
Fault detected Condition
Not Heating < 9 deg F in 15 minutes
Over Temperature Greater than 180ºF, (but less than 210°F).
Door thermistor. Open circuit thermistor, (temperature sensed
is below 32°F) or short circuit thermistor,
(temperature sensed is above 210°F).
Not filling Not filled after selected fill time
Not draining Not drained in 5 minutes
Overfill Leak Detection switch closed or 2
pressure switch
Turbidity Sensor
High Signal Count is greater than 65,279 in 0.4 seconds
No Signal & Counter did not receive pulses from sensor
Low Signal Count is less than 50 in 3 seconds
Turbidity Temp Sensor Thermistor shorted ,open or constant
4.1.4 Exiting the Fault Indication mode:
To exit the fault indication mode, and clear any saved fault
codes from memory, press and hold down the START/
CANCEL button for 3 seconds. The control will then go into a
standby (off) state with all LEDs off. Note: The Average Clean
Water Turbidity (ACWT) value will also be cleared.
To exit the fault indication mode, without clearing the saved
fault codes, repeat the button pressing sequence shown
above, or remove power.
4.2 Rotary Models 6600 and 6605.
To assist with the diagnosis of dishwasher faults, any faults
that are detected during a wash cycle are saved in nonvola-
tile memory. These fault codes can then be accessed later on
during a service call.
4.2.1 Fault Identification methods for faults detected
during a wash cycle:
If a Not filling and/or Not draining fault is detected during a
wash cycle, then the respective fault codes are to be dis-
played when detected, and remain on if the door is opened.
If a Not Filling fault code was detected during a wash cycle,
then the Wash Cycles indicator LED will flash, at a rate of 0.5
second on, 0.5 second off, .
If a Not Draining fault code was detected during a wash cycle,
then the Heat Options indicator LED will flash, at a rate of 0.5
second on, 0.5 second off.
These fault codes can only be cleared from the display by
pressing and holding the START/CANCEL button for 3 sec-
onds at the end of the wash cycle, or by starting a new wash
cycle. (The fault codes stored in nonvolatile memory will not
be cleared).
Fault code LED
Normal Wash
Pots & Pans or Heavy Duty indicator LED will flash
at the standard rate (0.5 second on 0.5 second off).
Pots & Pans or Heavy Duty indicator LED will flash
slowly (1 second on, 1 second off).
China Crystal or Light Wash
Rinse Only or Sani Wash
nd level Heated Dry or Smart Dry
Water Temp HIGH or SANI.
Delay Start 2hr
Delay Start 4hr
4.2.2 Other Fault Identification methods:
Activating the Fault Indication mode:
If a fault has been detected by the Field Test Cycle, or by the
Factory Test Cycle, then the Fault Indication mode will be
automatically activated, and the fault will be reported as
indicated below.
To manually recall the saved fault codes, carry out the
following sequence:
1. Ensure the dishwasher is in Stand-by (OFF) with no
program LEDs on;
2. Align the WASH CYCLES and HEAT OPTIONS knobs
so that both knobs are horizontal with their position indicators
pointing away from each other;
3. Press and hold the Start/Cancel button for 3 seconds.
Notes:The buzzer will then sound for 1 second to indicate
that the Fault Indication mode has been accessed. Note:
Buzzer silencing mode has no effect in this mode.
If no fault codes were saved, the control is to return to the
stand-by (off) state with no LEDs illuminated.
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