Fisher & Paykel DishDrawer DD247 Service Manual page 45

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7.1.2 User Warning U4 - Other Tub Faulting
The other tub has a fault which is preventing the operation of that tub. No action is required for the
1.
tub displaying the U4 code.
DO NOT REPLACE COMPONENTS ON A TUB WITH THIS WARNING.
7.1.3 User Warning U6 - Spray Arm Not Detected
Check to ensure that the spray arm is correctly located on the motor rotor and that the motor rotor
1.
is correctly installed in the motor housing.
Using "Hardware Output Mode" run the fill valve (P30 & 31). If water enters the tub then the water
2.
supply is connected, however the water pressure may still be too low for correct operation. Min
pressure .03MPa (4.3psi), water softener model 0.1MPa (14.5psi).
If the water pressure and flow rate is inadequate, try fitting a 4 litre valve ( part #529828) which may
3.
help increase the flow to the product. In cases where water pressure is too low, the DishDrawer may
need to be run at a separate time to other applainces which use water, such as washing machines.
To exit "HO" mode, press POWER button at any time.
4.
7.1.4 Fault Code E1 - Flood Detected
There are two types of E1 faults, wet E1 that is usually due to a leak, or dry E1 which can be due to a
component failure or wiring related fault.
Wet E1- Water in the Chassis Base
Check the tubs to ensure there is nothing obstructing the lid like large cooking utensils or large
1.
cups and glasses placed on top cup racks which extend above the tub flange.
Make sure the lid systems are free from other obstructions and yokes are connected, enter
2.
"Hardware Output Mode" (p30 & 31) and check operation of the lid motors on both tubs. If either of
the actuators fails to operate, or are slow to operate replace the actuator. ( see p68 on procedure)
Check the fill level on both tubs, is the valve turning off and disconnecting the water supply, and
3.
is the tub filling to the correct level? approx 2.5litres (0.8 US gallons). The fill valve operation can
be checked in "Hardware Output Mode" but run in diagnostics means the water valve will not shut
off, this is done manually (refer p30 & 31), when run and switched off, does any water still leak into
the wash tub? if water is still running through the dispenser when shut off then the valve diaphram
maybe leaking and valve will need replaced.
Check for any foam inside the tubs, if present try to determine the cause, i.e customer spilt rinse
4.
aid when filling, wrong detergent used. Try and remove as much foam as possible, this can also
be done by flushing the tub, to flush the tub enter "Hardware Output Mode", select drain pump
component P2 (p30 & 31) , while the drain pump is operating, manually pour warm water into the
tub until the foam is removed. To exit the hardware output mode, press POWER button at any time.
Check the motor rotor that the wash impellor is intact, and that the motor rotor turns freely.
5.
Check the hall effect sensor (RPS) on the motor stator, ensure this is this clipped in correctly.
6.
Look for other sources of leaks, possible other leaks can be the following: lid seal, heater plate
7.
seal, wash pump seal, internal fill hose, leaking water valve body, drain hose, drain hose cuff, water
softener (if fitted)
Remove excess water from chassis base and ensure the flood sensor is dry.
8.
Dry E1 - No Water in the Chassis Base
Check for corrosion around the flood sensor and ensure that the flood sensor is correctly placed and
1.
not touching the chassis.
Check the chassis harness connections for corrosion.
2.
Replace the mains filter board.
3.
If the fault continues, replace the controller.
4.