WMF 800 - Specific Fault Diagnosis and Solutions

Instructions, error messages, troubleshooting
© WMF800 / 900 / 1000S / 1000proS Edition 07/2014 - KMT
T6-4
6/2.2 Troubleshooting
Errors without display message Entered in error statistics Comments / Help
No milk foam/milk output, but milk is
in reservoir
 Check whether:
hot steam is dispensed
elastomer nozzle is inserted
milk hose is kinked or squashed
 Clean spout
No milk foam, only warm milk  Carry out milk system rinse
If the problem continues:
 Clean milk system
All components must be clean, and the passages must be
clear.
 Clean the air intake cap and the air intake pipe (not for
WMF1000proS)
 Check air pump (only with the WMF1000proS)
Milk or milk foam too cold  Check whether the correct milk nozzle is attached to
the milk hose
Milk is too hot and there is too little
or milk foam has bubbles
Milk is too hot:
 Refrigerate milk
 Check whether the milk hose is kinked or squashed
 Check whether the correct milk nozzle is attached to
the milk hose
Leakage:
 Check all connections and seals of the spout
Water tank is difficult to move  Lightly smear the O-rings on the water tank coupling
with the WMF“gasket grease”
Brewing unit is difficult to remove
andreplace
 Lightly the smear O-rings on the brewer with
WMFgasket grease
Brewing unit can no longer be pulled
out or inserted
Brewing unit is not in the basic position:
 The brewing unit can be adjusted using the multitool
until the brewer can be inserted
 Remove coffee grounds residue from the inside of the
brewer
Noticeably large amount of coarse
ground coffee in the brewing chamber
 Check grinding degree setting and set finer if
necessary
 Check whether the metal spring ring is missing from
the brewer plunger
 Check the ground coffee spout on the grinder
Oscillation pump makes loud noises  Air in the system
 Bleed machine: dispense hot water until aconstant
stream of water comes out
 Push in water tank completely
Instructions: it is normal for the oscillation pump to
start by itself from time to time during operation, as it
automatically fills the system.
Coffee has no crema  Coffee mixture is not suitable, or coffee is no longer
fresh
 Quantity of ground coffee is set too low
 Cup is too cold: preheat
 Grinding degree too coarse: set the grinding degree to
be finer
 Carry out warm-up rinse