Electronic Controls; Critical Errors - Haier GE DDT700S N0 Series Technical Service Manual

The Main Control Board is located under the dishwasher. It is supplied 120 VAC from the consumer's
home. Outputs include 120 VAC to the heating element, wash and drain motors. The control also
supplies 13.5 VDC to the fill system, door switches, turbidity sensor (some models), the User Interface
(UI) board and detergent module in the door.

Critical Errors

Critical errors will turn a cycle off and show a display alerting the consumer of a fault which will not
allow the dishwasher to function or cause an undesirable condition.
No Water Detected
In the event the internal water level does not change, the cycle will be cancelled and the user interface
will display the following:
• Models with SSD Screens: H20 will be displayed on the SSD screen.
• Models without SSD Screens: Wash Temp LED will blink continuously.
The water may be turned off. The consumer is directed to verify the water supply line is connected
properly, the supply line valve is turned on, and restart the cycle. If this fails, the consumer is directed
to call for service.
Pressure Sensor Errors
In the event that the pressure sensor signal is undetectable or irrational, the cycle will be canceled and
the user interface will display the following:
• Models with SSD: PrS or PrF will be displayed.
• Models without SSD: Dry LED or Wash Temp+Dry LEDs will blink.
The control does not see a change in pressure during fill. Verify pressure sensor harness, then replace
pressure sensor if needed.
Continuous Fill Error
In the event consecutive signals from the pressure sensor detect high water level, the drain pump will
run and the user interface will display the following:
• Models with SSD Screens: CFE will be displayed on the SSD screen.
• Models without SSD Screens: Cycle Indication LEDs will blink continuously.
The consumer is directed to turn off the water supply. Diagnose reasons for water valve not shutting off.

Electronic Controls

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