Service Mode; Diagnosing Electronic Control Boards - Haier GE DDT700S N0 Series Technical Service Manual

Service Mode

Entering Service Mode
NOTE: Entering Service Mode resets the CSM.
The dishwasher must be in Consumer Error Mode
to enter Service Mode. Entering Service Mode
will reset the CSM, allowing loads to be checked
for the cause of the CSM to trip. The control will
blink the Normal LED every few seconds for the
number of times corresponding to the load being
tested.
While in Consumer Error Mode
• Press and hold Cycle Select or furthest button
on left (some models) for 5 seconds.
• Press Cycle Select or furthest button on left
(some models) to select or increment each
test.
• Press Start, to start and stop each test.
LED Load to
Blink Control
#
Attempts to empty.
Drain Takes approximately 75
1
Pump seconds from normal
level.
Attempts to fill to
Water
2 normal level. Takes
Valve
approximately 1 minute.
Changes spray arm (via
Circulation changing diverter) every
3
Pump 30 seconds. Runs for
maximum of 2 minutes.
Turns on heater for a
4 Heater
maximum of 2 minutes.
Turns on detergent
Detergent
5 module solenoid for a
Module
maximum of 2 minutes.
Turns the door fan ON/
6 Dry Fan OFF for models that
support this feature.
Heater If the CSM trips, replace
7
Relay Test the heating element
Service Mode will exit after 5 minutes of inactivity.
Exit Service Mode by pressing and holding the
Cycle Select and Start pads for 5 seconds, or by
pressing any other pad.
Timeout / Notes
– 47 –

Diagnosing Electronic Control Boards

Diagnosing the main control and User Interface
(UI) control are covered in this section. Many
components can be checked from the main
control, which can be accessed with the door
on or removed if needed. Some connectors are
located through the bottom cover to allow easy
access to AC supply connector, door harness
and ACM or Appliance Control Module. The
Connect Plus Module (sold separately) allows the
appliance to communicate with the utility meter
when peak rates occur, and allows the appliance
to respond and operate in a manner that will
reduce energy usage of that appliance at high/
critical demand rates. For more information on
the module and display, refer to the separate
Connect Plus documents.
WARNING: GE Factory Service Technicians
are REQUIRED to follow Lockout / Tagout
(LOTO) 6 Step Process prior to beginning
repair.