Hotpoint – H/A - Ariston automatic,
built-in coffee machine
MCX 103 X - MCK 103 X/HA
Automatic,
built-in coffee machine
Contents
1)
2)
3)
4)
5)
6)
7)
Technical Specifications
Accessibility
Wiring diagram
Water circuit diagram
Test procedures
Troubleshooting
Technical info
Technical Specifications
Accessibility
Unscrew the first
Unscrew the first
six screws
vi
six screws
securing
the
securing
the right
surround on the
of side
the rightside
hand
surround......
… and the other
six screws
securing the
surround on the
left.
continued
Removing the surround
Accessibility
Unscrew the three screws securing
the surround at the top, near the brew
group..
… and the two screws at the
bottom.
continued
Removing the surround
Accessibility
Unscrew the two screws
securing the cover on the
right ,...
... and the 1 screw on the left
(be careful when putting back
together).
continued
Removing the surround
Accessibility
On taking off the
cover, remove the
faston and other
connectors, as shown
in the photo.
Removing the surround
Accessibility
Unscrew the screw
on the left and
The cappuccino
foamer pipe can then
be pulled out.
remove the switch and ..
.. on the right. If this is too
awkward to do, we recommend …
… unscrewing the
3 screws.
Removing the surround
Accessibility
To remove the outer casing, unscrew the
3 screws in the rear panel.
continued
Removing the rear panel.
Accessibility
… and unscrew
the screws
shown in the
photo on both
the right and
left.
Caution: there
is also a screw
at the bottom of
the trays.
Remove the casing.
Removing the casing
Accessibility
To remove the
cover, unscrew
the 4 screws as
shown in the
photos.
Removing cover
Accessibility
Unscrew the
2 screws securing
the finger guard and
pull it upwards to
remove.
Dismantling the coffee grinder
Unscrew the
plastic cap
Accessibility
Unscrew the
3 screws securing
the coffee bean
hopper.
Dismantling the coffee grinder
Accessibility
Unscrew the
screws
securing the
knob.
Dismantling the coffee grinder
Accessibility
Lift off the bean
hopper.
Dismantling the coffee grinder
Accessibility
Disconnect the two
faston connectors
from the motor and
pull the grinder up
and out.
Dismantling the coffee grinder
Accessibility
Unscrew the rubber
cap
Flow meter
Detach
connector
Detach
connector
Dismantling the flow meter
Using a screwdriver as a
wedge, unhook the
flowmeter
Accessibility
Pull out the small
spring
Ulka pump
Pull out the tube; be
careful with the o-ring
Remove the wire
spring
Pull out the
tube
continued…
Dismantling the pump
Accessibility
Pull out the
tube
feeding into
the pump
Holding the pump lug with a
12mm spanner, unscrew the
valve + damper assembly
Pull the pump
out from its
rubber support,
first from the
bottom then from
the top.
Dismantling the pump
Accessibility
Unscrew the
5 screws
securing the
circuit board
to the casing;
be careful
with the cable
glands!
2 at the top
1 in the
middle
Power board
Removing the circuit board
2 at the
bottom
Accessibility
Unscrew the
2 screws indicated
Pull out the tubes from
the damper and valve
Steam unit
Remove the
steam vent
Unscrew the
earth screw
continued…
Dismantling the steam unit
Accessibility
Take out the earth faston
connector from the
solenoid valve.
Now you can
extract the steam
unit to replace the
full sub-assembly,
solenoid valve
and TCO’s (TCO’s
are secured with a
nut on the inside).
Dismantling the steam unit
Accessibility
To remove the
generator,
disconnect tubes
from couplers,
there are 4 screws
to unscrew.
Caution: hold the
nuts in place on
the inside.
continued…
Dismantling generatore + meccano valve
Accessibility
Near the slide
Near the
solenoid valve
Inside the door
Inside the tank
compartment
Dismantling generatore + meccano valve
Accessibility
Caution:
When assembling, align the
meccano valve with the brew
group. Position the 4 screws +
4 bolts, then give them a few
turns; then, with the machine in
test mode, allow the carriage to
rise to the top dead center, pull
out the plug then tighten the
four screws to a torque value of
2/3Nm.
4
1
Final torque for front and back
screws of 2/3Nm
Screw tightening sequence
2
3
1. Back left
2. Front right
3. Back right
4. Front left
Dismantling generatore + meccano valve
Accessibility
Remove the
2 faston
connectors
from the
motor
board...
After removing the steam unit,
you can also remove the
positioning assembly.
… and the
faston
connector
from the
earth.
Dismantling positioning assembly
Accessibility
Remove the brew group.
Unscrew the 2 screws.
(When reassembling, add
LOCTITE Type 243 to the
thread and tighten to a
torque of 2–2.5 Nm)
Dismantling positioning assembly
Remove the carriage.
Accessibility
Unscrew the self-tightening screw.
You can now pull out the
positioning unit.
Dismantling positioning assembly
Wiring diagram
THEORETICAL
DIAGRAM
Wiring diagram
MICRO KEY
M1
TOP UNIT
M2
BOTTOM UNIT
M3
COFFEE GROUNDS DRAWER
M4
ACCESS DOOR
M5
IFD PRESENCE
M6
PIPETTE PRESENCE
MICRO KEY
PRACTICAL
DIAGRAM
water circuit diagram
test procedure
Touch Super Vapour
MODEL
TEST
LOAD TEST
MODE
PROCEDURE
With the machine on stand-by
(off but with the main on/off
switch set to I), open the service
door and press and hold the 1
CUP, STRENGTH and MENU
keys at the same time for at least
6 seconds, or until the message
“SELECT TEST” appears on the
display. After this, shut the
service door and press the
STEAM icon: LOAD TEST MODE
will appear on the display.
To exit test mode, unplug from
the power supply.
ICON AND ASSOCIATED LOAD
ACTIVATION
ICON
LOAD
Long/short
PUMP
Key Lock
MOTOR UP +
LIGHT
Menu
HEATER
Strength
STEAM UNIT
2 cups
Solenoid valve 2
(brew head) + FAN
1 cup
Solenoid valve 1
(drain)
Steam
Solenoid 1 +
Solenoid 2
UP menu
GRINDER
Hot water
MOTOR DOWN
test procedure
Touch Super Vapour
MODEL
TEST
DISPLAY
TEST
MODE
PROCEDURE
With the machine on standby (off but with the main
on/off switch set to I), open
the service door and press
and hold the 1 CUP,
STRENGTH and MENU
keys at the same time for at
least 6 seconds, or until the
message “SELECT TEST”
appears on the display.
After this, shut the service
door and press the 1 CUP
icon: all digits will light up
on the display followed by
the words “DISPLAY TEST
MODE”.
ICON AND ASSOCIATED
DISPLAY
Icon
Display Unit
1 cup
BUTTON 1
2 cups
BUTTON 2
Steam
BUTTON 4
Long/short
BUTTON 9
STRENGTH
BUTTON 10
Down Menu
BUTTON 8
Key Lock
BUTTON 12
MENU
BUTTON 11
UP menu
BUTTON 6
OK
BUTTON 7
Hot water
BUTTON 5
On/Stand by
BUTTON 0
NOTES
When not used for
10 seconds, the
machine exits test
mode. The original
language is reset and
the first priming
enabled.
Troubleshooting
Before doing anything or replacing any
components, make sure you have all service
documentation for the model to be repaired
(specifications, test procedures, technical reports
and information).
Possible complaints you may receive from
customers are listed below. The first thing to do is
check if there are reasonable grounds to the
complaint.
It is important to determine if the problem was
caused by:
1) Incorrect use of appliance by the customer.
2) Technical fault.
Troubleshooting
1) Complaints may be caused by incorrect use of the
appliance, and generally refer to:
- The coffee is not hot.
- The coffee is not very creamy, and doesn’t taste
nice
(see table on next page)
Troubleshooting
Problems
complaints
The coffee is not
hot.
Caution: check
the temperature
after the third
coffee has been
made; the
temperature
should be
78 C+- 3 C
What to ask
the
customer
When did the
problem
occur?
Right from
the
beginning or
after a period
of time?
Possible
causes
Remedies
- The cups
haven’t been
warmed.
- The brew
group is cold.
- Heat the cups with hot water.
(Especially on cold days)
- Heat the brew group by selecting
“RINSE”
The coffee
temperature
set is too low.
From the menu, set a higher coffee
temperature. (There are three
options)
Hot water tank
is crusted with
limescale.
Check how many coffees have been
made and how often it has been
descaled. Check the temperature of
the coffee leaving the brew head;
check after the third coffee. The
temperature should be 78 C+- 3 C
It it is below this, descale and try
again.
continued
Troubleshooting
Problems
complaints
The coffee
tastes bad,
is watery
and not
very
creamy.
What to
ask the
customer
When did
the
problem
occur?
Right from
the
beginning
or after a
period of
time?
Possible causes
The coffee grind is too
coarse.
The grinders are worn
out.
Remedies
Check grinder settings. Turn the
grinder setting knob to position 4/5
(factory setting) with the grinder
running; brew 2/3 coffees and
check how they are delivered. If
nothing has changed, turn the knob
to position 1 (with the grinder
running) and try again, brewing
2/3 coffees. If it is still being
ground too coarsely, take the
machine away. (See specifications
on next page)
Replace the grinder.
continued
Troubleshooting
Problems
complaints
The coffee
tastes bad,
is watery
and not
very
creamy.
What to ask
the
customer
When did the
problem
occur?
Right from
the beginning
or after a
period of
time?
Have you
changed type
of coffee?
Possible causes
The coffee is too
finely ground.
Remedies
Check grinder settings. Turn the
grinder setting knob to position 7 with
the grinder running; brew 2/3 coffees
and check how they are delivered. If
it is still too finely ground, take the
grinding unit away. (See
specifications on next page)
A different type of
coffee has been used.
Readjust the grinder settings to suit
personal taste.
Not a good quality
coffee or not suitable
for use with espresso
machines.
Use a better quality coffee / use a
blend that is recommended for
espresso machines.
Troubleshooting
2)
When a fault is encountered, the machine
may generate the following messages:
- General alarm
- Coffee too finely ground, adjust grinder.
- Fill the coffee bean hopper.
- Fill the tank.
- Descale
(see table on next page)
Troubleshooting
Error
message
When?
The message
appeared as
soon as the
machine was
switched on.
General
alarm
The message
appeared when
the motor was
briefly actioned.
Six minutes
after it was
switched on, the
machine still
showing that it
is heating up.
Possible causes
Remedies
NTC, temperature
sensor.
Check the sensor connection on the
PCB; check the resistance in ohms:
if it is 0 (short circuit) or infinite
(open circuit) replace the
component.
Upper or lower micro
limit switch.
Check microswitches are working
properlty, and replace as applicable.
Hall cell sensor
board
Check the connection between the
Hall cell sensor and circuit board.
Replace if necessary.
Main PCB
Replace.
Safety TCO
activated.
Replace.
Heating element not
heating.
Replace.
Main PCB
Check the connection and replace
as necessary.
continued
Troubleshooting
Error
message
General
alarm
Coffee too
finely
ground,
adjust
grinder.
When?
Possible
causes
Remedies
After
switching on,
there was a
funny noise
when the brew
group moved.
The upper
and lower
microswitches
are not
closed.
Check if the two micro-switches are working
properly, and if necessary replace them.
While
operating
Air in
water
circuit
Reset the coffee grinder settings by moving the
knob to a higher number. (Always do this with the
grinder running). Push the tank to make sure it is
securely engaged, bleed any remaining air from
the circuit (press “hot water”). Check the
connection and replace the flow meter if
necessary. Check the permanent filter below the
water tank to make sure there is nothing
obstructing the flow of water; clean and replace
as necessary. Check the generator by
disconnecting the inlet water pipe and starting the
pump (in test procedure) to remove the air
pocket.
continued
Troubleshooting
Error
message
Fill coffee
bean
hopper
(make sure it
is full)
Fill the
water tank
(make sure it
is full)
When?
Possible causes
Remedies
The message
persists even
when there are
beans in the
hopper. There
was a funny
noise when
coffee was
grinding.
Friction noise due
to stones or other
objects in the
grinding wheels.
Dismantle the top part of the grinder
unit and take out the stone or excess
coffee grains inside. Check the grinder
motor is working using the test
procedure; if the motor is idling the
transmission belt is broken. The entire
grinder needs to be replaced in this
case.
The message
persists even
when there are
beans in the
hopper. The
motor is not
rotating.
The motor is
faulty.
Replace the entire grinder unit.
The message
appears even
when there is
water in the
tank.
Float
Check the float in the tank and that it is
free to move in its assigned position.
Reed switch
sensor.
Check the reed switch, making sure it is
connected properly. Replace if
necessary.
continued
Troubleshooting
Error message
Descale
When the machine
indicates that
descaling is required,
is is not a sign of a
fault, but notification
that the machine,
the generator and
relevant pipes need
to be thoroughly
cleaned to get rid of
lime scale.
When?
Remedies
The flow meter measures the amount of
water used and when a preset limit is
exceeded the machine generates an alert.
Four different water hardness levels can be
set.
The reactive strip supplied with the machine
is a quick way of testing water hardness so
you can set it to the correct level.
(1 soft water ...... 4 very hard water)
Descale.
The 4
water
water
water
water
settings are:
hardness 1 = 250 litres
hardness 2 = 130 litres
hardness 3 = 80 litres
hardness 4 = 40 litres
Problems occur when the descaling
message appears right after the
appliance has been descaled. In this
case, it means that it was not done
properly and has to be repeated.
Technical Information
Setting the grinder
Unscrew the screw on the knob
and pull it out. Unscrew the two
screws and remove the safety
guard.
Turn the ring shaft clockwise until
the end of stroke position. Take
out the moving grinder.
continued on following page...
Technical Information
Setting the grinder
Check that the elastic ring is in the
right position.
Remove the retaining ring.
continued on following page...
Technical Information
Setting the grinder
Turn the ring shaft anticlockwise
until the end of stroke position then
pull it out.
Turn the ring nut CLOCKWISE for
finer grinding. Turn the ring nut
ANTICLOCKWISE for coarser
grinding. Turn in 1 or 2 clicks at a
time.
continued on following page...
Technical Information
Setting the grinder
Insert the shaft, aligning the scale on
the ring nut with the rib indicated.
Insert the retaining ring.
(Make sure you insert it correctly.)
continued on following page...
Technical Information
Setting the grinder
Turn the ring shaft CLOCKWISE until
the end of stroke position then insert
the grinder.
Then turn it ANTICLOCKWISE until
the end of stroke position.