WMF Coffee Maker Error Codes
WMF Coffee Maker Error Codes

WMF Coffee Maker Error Codes

WMF Coffee Maker Error Codes The tables below contain useful tips on troubleshooting a WMF coffee maker. There are several tables, as the WMF brand produces a wide range of coffee machines varying in structure and, therefore, requiring different approaches when it comes to troubleshooting and repair. Some of the ranges include the WMF Presto series, the 1500S, 2000S, 5000S, 8000S, 150 F coffee machines, Bistro, and more.

WMF 150 F coffee maker troubleshooting

Error patternPossible cause:Action instructions
The machine is not working.The fuse in the fuse box has been triggered. The group is loaded too heavily.Replace the fuse or reset it.

Connect the machine to a separate group.

The brewing process indicator illuminates, but no water is going into the filter.The dry-boil protection has been triggered.Reset the dry-boil protection. Safeguards; dry-boil protection.
The descale indicator illuminates.The scale deposits in the heating system exceed the set limit.Descale the machine.
The descale indicator light remains on after descaling the machine.The machine has not yet been reset.Press the program button for 6

seconds. The light will go out.

Resetting the descaling indicator light.

Steam is coming from the filter.The machine was not descaled when indicated by the descale indicator light. The wrong water setting has been applied.Descale the machine.

Setting the descaling indicator.

The coffee is too strong.Too much coffee has been placed in the filter.Reduce the amount of coffee.
The coffee is too weak.Not enough coffee has been placed in the filter.Increase the amount of coffee.
The water distributor is soiled, so that the coffee is not being completely drenched.Unscrew the water distributor and clean it.
The coffee is not hot enough.There is no lid on the jug.Use the lid.
The jug is too full or is overfl owing.The set quantity is too high.Lower the quantity.

Setting the amount of coffee.

Not enough coffee is getting into the jug.The set quantity is too low.Increase the quantity.

Setting the amount of coffee.

WMF 150 F coffee maker. Errors with error message in display

Display ErrorPossible causeAction instructions
E1Filling time error.

Machine fi lls too slowly.

The water supply is blocked

Check the water supply. Fully open the tap.

Increase the water pressure.

Switch the machine on and off.

The error report will disappear.

E2Maximum water sensor error.
E3Minimum water sensor error.
E4

E5

E6

E7

Water sensor error.

EEPROM error.

Display error.

Flow meter error.

The control unit reports a defect that

can only be resolved by a WMF service

technician. Contact WMF Service.

E8Minimum water sensor error.

Reservoir does not fi ll during

the brewing process.

Check the water supply. Fully open the tap.

Increase the water pressure. Switch the machine on and off.

The error message disappears.

WMF 1000 coffee machine troubleshooting

Error messageAction
Use brewerBrewer is not used: Use brewer
Brewer end switchBrewer unit not inserted correctly: Use brewing unit correctly
Brewing unit stiff: Remove brewer, open brewing chamber with multitool, apply a thin layer of the grease from the accessories kit to the red seal ring
Flow fault (water tank is empty)Check to make sure that float in the water tank runs smoothly and fill water tank Bleed machine: Dispense hot water until a constant stream of water comes out
Flow fault (water tank is full)Air in the system, possibly associated with loud pump noise: Check whether the water tank is pushed in completely Bleed machine: Dispense hot water until a constant stream of water comes out no hot water dispensing: Remove tank filter/dirt trap from tank, try again Brewing unit stopped up: Remove brewing unit, clean manually, insert and carry out cleaning program if the error occurs sporadically: set grinding degree coarser switch off pre-brew
EEPROM Errorswitch machine on/off If the error repeats, the fault must be eliminated by the  WMF 1000 Service-Center.
Motor driver errorswitch machine on/off If the error repeats, the fault must be eliminated by the  WMF 1000 Service-Center
grinder blockedThe grinders are blocked by foreign bodies: To eliminate,switch off machine, turn grinders clockwise with the multitool in order to be able to remove foreign bodies.
grinding degree too fine: set grinding degree coarser
Temperature sensor steam Temperature sensor waterswitch off coffee machine, allow to cool and switch on again If the error repeats, the fault must be eliminated by the  WMF 1000 Service-Center.
Timeout levelAir in the system, possibly associated with loud pump noise: Check whether the water tank is pushed in completely Take milk hose out of the milk container and press the milk foam button if hot water comes out instead of steam: Carry out descaling if steam comes out: Please call the hotline
no milk foam/milk output, but milk in reservoirCheck that milk hose is not kinked or crimped, lay milk hose again Clean all-in-one spout and milk nozzle
No milk foam, only hot milkPut milk lever in milk foam position Carry out foamer rinse, pushing spout completely upwards if necessary, check whether the air intake nozzle of the all-in-one spout is stopped up
Milk or milk foam is too coldEnsure that the milk nozzle is on the milk hose Check whether the correct milk nozzle is mounted (transparent for refrigerated milk)
Milk is too hot and there is too little or milk foam has bubblesMilk is too warm: Refrigerate milk Check that milk hose is not kinked or crimped lay milk hose again Check whether the correct milk nozzle is mounted (grey for unrefrigerated milk) leakage: Check all connections and seals of the all-in-one spout Milk lever is not all the way up for milk foam or not all the way down for milk
All-in-one spout: Assembly/disassembly is stifflightly smear o-rings with WMF sealing grease and make sure that no grease gets into the air intake opening
Water tank stifflightly smear O-rings with WMF sealing grease
Display side doors openBrewing unit is not inserted correctly or doors are not closed correctly – check! The lever labeled “Press” must always be in the level position.
Pump makes loud noisesWater tank is not inserted correctly (air in the system). Push water tank in completely Bleed machine: Dispense hot water until a constant stream of water comes out
Coffee has no cremeUnsuitable coffee mixture or coffee is not fresh Quantity of ground coffee is set too low Cups too cold: pre-warm Brewing temperature too low: increase temperature grinding degree too coarse: set grinding degree finer
Brewing unit can no longer be pulled out or insertedBrewing unit is not in the basic setting Close the right side door and switch machine on The brewing unit can be adjusted using the multitool until the brewer can be inserted

WMF 1500S, 2000S, 5000S, 8000S coffee machine error codes

Error

number

Error

description

Action instructions
6Brewing unit

lockup current /

Brewing unit stiff

Switch off the coffee machine.

Clean the brewing unit.

26

36

(9516 for WMF 5000S)

Right grinder

blocked

Left grinder

blocked

Switch off the coffee machine

Disconnect mains plug

Remove bean hopper

Rotate the grinder disk counterclockwise only by

using the multitool for the hopper

(two pins must be inserted in the corresponding

recesses on the grinder; see illustration)

Replace hopper

Switch on coffee machine

If this occurs frequently:

Set grinding degree one stage coarser

88Boiler:

over-temperature

Switch off the coffee machine, allow to cool and

switch on again

If error not remedied

Switch off the coffee machine

Call WMF Service

89Boiler:

heat-up time error

Switch off the coffee machine and on again

If error not remedied call WMF Service

161Flow error:

brewing water

Clean the brewing unit

Set grinding degree coarser

Reduce quality

If error not remedied call WMF Service

162Flow error:

when cleaning

Between each of the following steps switch off the coffee machine and on

again. If error not remedied carry out the next step.

Clean the brewing unit

If error not remedied call WMF Service

163Flow error:

warm rinsing

Between each of the following steps switch off the coffee machine and on

again. If error not remedied carry out the next step.

Clean the brewing unit

If error not remedied call WMF Service

186Steam boiler:

level

Beverage dispensing temporarily blocked.

Check that grounds container is correctly

inserted

Switch off the coffee machine and on again

188Heater errorSwitch off the coffee machine, disconnect mains

plug

Call WMF Service

189Steam boiler:

heat-up time error

Switch off the coffee machine and on again

If error not remedied call WMF Service

WMF 1500S, 2000S, 5000S, 8000S coffee machine troubleshooting

Error patternAction instructions
No hot water

dispensing but water in

grounds container

Clean hot water spout

Call WMF Service (coffee dispensing possible)

No Choc dispensing

but water in grounds

container

Do not use Choc dispensing

Call WMF Service (coffee dispensing possible)

Choc portion

controller blocked,

Choc dispensed only

with water

Clean portion controller

Empty powder

Turn dosing auger manually until all powder is

removed

If necessary rinse with water

(Allow to) dry completely

Coffee dispensing on

the left / right differs

Clean the combi spout
No milk foam /

milk output, but milk

in milk container

Check whether the milk hose is kinked or squashed

Re-route milk hose correctly

Clean the combi spout

Check whether milk nozzle is blocked

Check whether milk cooler is iced

Milk foam not OK

Temperature too cold

or too hot

Change milk nozzle

Use a suitable milk nozzle on the combi spout.

Milk nozzle 3 kW

• Very cold milk (up to 8 °C)

• Chilled milk (8 to 12 °C)

• Non-chilled milk (above 12 °C)

Clean the combi spout

If error not remedied

Use another milk nozzle from the accessories

The milk foam

dispensing spits

strongly

Milk too hot

Check whether the milk system has been cleaned

Clean the milk system

Check whether the milk has been cooled

sufficiently

No powder beverage

dispensing

Clean the mixer bowl

Is the hose kinked?

Perform milk cleaning and rinsing oftener, if

necessary daily

Dose less powder

Dose more water

Pump runs

continuously, water in

grounds container

Switch off the coffee machine and on again

If error not remedied call WMF Service

Milk foamer assembly

and disassembly stiff

Lightly smear the O-rings with WMF gasket grease
Choc hopper cannot be

replaced

Manually turn the drive for the dosing auger at the

portion controller slightly in a clockwise direction

Check whether Choc hopper is accidentally locked

Bean hopper cannot be

replaced

Check whether bean hopper is accidentally locked

WMF Presto coffee machine error codes

Report displayDescr.
2
6Brewer over current
7Brewer timeout (no electricity
26Portioner current malfunction
36Current malfunction Portioner
46Current malfunction Portioner 3
87Boiler sensor damaged
88boiler excess temperature
89boiler heating time
130General current malfunction
149General voltage malfunction
161Flowmeter malfunction during brewing
162Flowmeter malfunction during cleaning
163Flowmeter malfunction during checking
164Flowmeter malfunction during hot water dosage
165Flowmeter malfunction during choc dosage
166Flowmeter malfunction during DK feeding
167Flowmeter malfunction during descaling
186Timeout during steam boiler filling
187Steam boiler sensor damage
188Excess temperature in steam boiler
189Heating-time steam boiler
9061Standby Event
906Reset Event!
9104Timer function not possible
Fifo was deleted
Defaults into RAM
Cleaning was interrupted
Machine cleaning in progress
Milk foam cleaning in progress
AD-transformer ready! (for developers only)
948Malfunction in level sensor
956Auto detect malfunction: Right grinder not detected
957Auto detect malfunction: brewing-valve not detected
958Auto detect malfunction: Oscillating pump not detected
959Auto detect malfunction: Release valve not detected
969Auto detect malfunction: Fan not detected
961Auto detect malfunction: Hot water dispensing valve not detected
96Auto detect malfunction: Mixer not detected but choc/topping portioner detected
963Auto detect malfunction: choc/topping portioner not detected but mixer detected
964Auto detect malfunction: Mixer valve detected but no powder portioner detected or; Hot water-Choc/topping valve not detected but choc/topping portioner detected
965Auto detect malfunction: Milk pump detected but no cappuccino valve detected or milk pump not detected but cappuccino valve detected
Power supply reports voltage too low
Pump switches to pressure -lowering mode (Info = button number)
975Reset triggered by customer
988MDB communication error coin checker
989MDB communication error card reader
990MDB communication error banknote reader
9914 V are switched off and then on again (reset for MDB equipment on 4 V)

WMF Bistro coffee machine error codes

Error

number

Error descriptionAction instruction
24Motor blockedAll associated brews barred. Note hopper switchover!

Tap on beans hopper

The beans may slide down and the light barrier is touched.

34
186Steam boiler filling time.Steam dispensing barred, milk foam barred.

Machine Off-On; note heating display for information for the WMF Service !

Water tap open?

189Heating time of the steam

boiler.

Heating off, steam dispensing barred.

Machine Off-On

Check local fuses

130General current error.Machine Off-On

Switch off lighting (adjust), all colours to zero

Allow the machine to cool off and try again

Call the WMF Service if the error occurs again

148Current error on the steam boiler vent valve.One can continue to use the machine; dosing fluctuations can occur for milk meterings.

Confirm steam dispensing or milk dispensing from time to time

Call the WMF Service

131Power supply error on the

hot water valve.

The hot water dispensing is barred: One can continue to use the machine. Do not use hot water anymore.

Call the WMF Service

132Current error on cold water mixing valve, hot water valve.Hot water dispensing is barred: One can continue to use the machine.

Do not use hot water anymore.

Call the WMF Service

137Barr on beverage mixer: One can continue to use the machine. Do not use choc anymore.

Call the WMF Service

140Current error on steam

valve 1

Steam dispensing is barred: One can continue to use the machine. Do not use steam dispensing or Steampower.

Call the WMF Service

141Power supply error on steam valve 2Steam dispensing is barred: One can continue to use the machine. Do not use steam dispensing or Steampower.
142Power supply error on the cap. valve 1Milk beverages are barred: The machine can be used except for milk beverages. If installed use steam dispensing for foaming.
143Power supply error on the cap. valve 2
134Power supply error on brewing valve for cold waterOne can continue to use the machine. Coffee beverages may be brewed too hot.

Call the WMF Service

149General power supply errorMachine Off-On

Allow the machine to cool off and try again

If the error occurs again:

Call the WMF Service

161Flow errorWater tap opened!

Machine Off-On

Perform cleaning and try again

Coffee dispensing on the

left/right differs

Clean the combi spout
No milk foam/no milk

dispensing, although there is milk in the hopper

Check whether the milk hose is kinked or squashed

Lay milk hose correctly

Clean the combi spout

Milk nozzle blocked?

Pinch valve turned to strongly?

Milk foam not OK,

temperature too low

Change milk nozzle:

– green milk nozzle for use of cooled milk

– white or brown milk nozzle for uncooled milk

Clean the combi spout

Close pinch valve

The milk foam dispensing

spits strongly

Milk to hot

Use white or brown milk nozzle

Set foam quality lower

Clean milk cleaning system

Open pinch valve

No illumination

No display

No tone when pressing a button

Pull out drip tray

Check the fuse behind the drip tray

Pull out mains plug!

Replace fuse

Only fuse F4A is permissible

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