Does Not Use Fabric Softener With Extra Rinse; Water Runs In Constantly; Water Leakage; Takes Too Much Water - Bosch WAT28400 Repair Instructions

Fault diagnosis
Fault
Does not use fabric softener with extra
rinse
Laundry does not smell fresh

Water runs in constantly.

Water leakage.

Takes too much water.

Takes fabric softener immediately.

2017-05-22 / DIS 113_58300000186503_ara_en_c
Possible cause
Bug in the software. If extra rinse is se-
lected after a programme preceded by fab-
ric softener dispensing, fabric softener will
not be added.
Aquastop valve / solenoid valve mechani-
cally blocked (always open).
Water level sensor mechanically blocked.
Water level sensor does not switch or
switches after a delay.
Sensor hose leaking
Flow sensor mechanically blocked.
Module defective (Aquastop valve /
solenoid valve permanently actuated).
Earth fault / short-circuit in the cable har-
ness (supply line to Aquastop valve /
solenoid valve).
Interruption in the cable harness (supply
line to water level sensor / flow sensor)
(R00)
Water pressure too low
Water-conducting component leaking
Detergent dispenser blocked
Water runs in constantly (appliance over-
flows)
Sensor system blocked
Water runs in constantly
Water jet deflected by burr on the upper
part of the detergent dispenser
Too much fabric softener dosed (siphon
drains fabric softener dispenser early)
Copyright by BSH Hausgeräte GmbH
Troubleshooting
► We are working on a solution
► Replace Aquastop valve / solenoid valve.
► Replace water level sensor.
► Replace water level sensor.
► Check sensor hose for blockage or replace.
► Replace flow sensor.
► Insert flow sensor correctly.
► Replace power module.
► Measure insulation resistance / resistance of the lines in the cable harness.
Measure insulation resistance / resistance of a line too low
0
► Replace cable harness.
► Replace cable harness.
► Optimum water pressure in the mains must be between 100-1000kPa (1 to 10bar).
When the tap is turned on, the flow rate must be at least 8 l / min). If the water
pressure is more than 10 bar (10 at.), a pressure reducing valve must be installed.
► See operating instructions
► Replace water-conducting component.
► Clean detergent dispenser.
► Check that inlet valve functions, if required replace.
► Check sensor hose for blockage or clean.
► Cleaning hose from the sensor system
► Cleaning the sensor system housing
► Check sensor system (hose) for leaks, if required replace
► Clean upper part of detergent dispenser.
► Remove burr.
► Refer customer to mark (Max) in the fabric softener compartment.
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