Buffalo DK774 - Troubleshooting

15
Trouble Shooting
Fault
Possible Cause
Solution
Unit does not switch on
No electrical supply to the
appliance.
Check mains water and electrical
connection is in place and active
Unit does not run when the
start button is pressed
Door not closed
Ensure that the door is securely closed
Controller Faulty
Contact your Buffalo Distributor
Unit is not heating the wash
water
Boiler water level low
Check water is turned on
Inlet water to hot/cold
Ensure inlet water temperature is
between 5 and 50°C
Washing tank resistor faulty
due to scale
Descale the unit
The thermostat in the reservoir
is faulty.
Contact your Buffalo Distributor
Unit is not heating the boiler
water
Boiler resistor faulty due to
scale
Descale the unit
Boiler thermostat may be
faulty.
Contact your Buffalo Distributor
Boiler resistor may be faulty
Contact your Buffalo Distributor
Poor washing performance
Detergent Rinse Aid low
Check the detergent and rinse aid
chemicals. If empty replace
Jet nozzles on washing arms
blocked
Clean jet nozzles on washing/rinsing
arms
Filters blocked
Clean the filters.
Water level low
Make sure that water supply is on
Dishes being loaded without
emptying
Remove any left-overs / debris on
dishes before loading the basket.
Dishes may require pre-
washing if excessively soiled.
Pre Wash Dishes
White marks on dishes can be
caused by hard water
Contact your Buffalo distributor for
details on using the necessary water
softener.
Appliance cannot be switched
off
Unit Faulty
Isolate the mains electrical supply, and
contact your Buffalo distributor for
technical service
Appliance does not drain
Filters blocked
Clean the filters.
Drain hose and /or drain vent
blocked
Unblock drain hose and/or drain vent
Drain Pump not activated (if
fitted)
Follow instructions in 'Model with a
Drain pump section of this manual
Water intake is slow
Water supply is not open
Ensure water supply is open
Low Water pressure
Water pressure should be 2-4 bars. If
pressure is low, a booster pump will be
required.
Water Outlet Nozzles on
washing arms are blocked
Clean water outlet nozzles on the
washing arms.
Water inlet hose blocked or
bent
Check water inlet hose
Low pressure due to the
pressure reducer valve on the
water supply line,
Water pressure regulator can be
adjusted / removed by component
engineer