1 check list for coffee machine (all models) – Nespresso Citiz & Co EF 488 User Manual
Page 49
Citiz service manual
49
T R O U B L E S H O O T I N G
7
T R O U B L E S H O O T I N G
7.1 Check list for coffee machine (all models)
After an initial inspec
tion in accordance
with this check list,
errors are quickly found and
corrected with the appropri
ate measure.
Therefore, adhere to the
sequence of the check list.
Repair every occurring error
and work the check list
through until it is completed.
Check
Error symptoms
Measure /
repair work
Further measures / repair
work
1 Check the coffee
machine for visi
ble damage
1.1 Housing parts bro
ken or damaged
YES replace housing parts if
necessary
NO continue
1.2 Power cord dam
aged
YES replace power cord
NO connect power cord of
machine to the mains and con
tinue
2 Check mechani
cal components
2.1 Cup support does
not remain in verti
cal position
YES check if the capsule and
waste water container are cor
rectly inserted and mounted
NO continue
YES replace damaged or
deformed capsule container
and/or waste water container.
2.2 Cup support rattles
when folded down
YES check if 2 rubber stop
pers are mounted on waste
water container
NO continue
NO replace stoppers
2.3 Closing handle
malfunction
YES it is very difficult or
almost impossible to close the
handle and to press it all the
way down
NO continue
YES replace the compact
brewing unit
2.4 Closing handle
unusual noise dur
ing actuation
YES check if damper is
mounted underneath closing
handle
NO continue
NO replace damper
2.5 Capsule is not
ejected correctly
YES replace brewing unit
(TMBU)
NO continue
2.6 Seal on capsule
cage is damaged
(check seal with
your finger)
YES replace brewing unit
(TMBU)
NO continue
3 Fill water tank
3.1 Water tank leaks
YES replace water tank
NO continue
4 Activate On/Off
switch to perform
automatic self test
4.1 Coffee machine is
not working
(does not function)
a) YES power cord is okay
(loose connection)
YES continue
NO replace power cord
b) YES On/Off switch is okay YES continue
NO replace On/Off switch
c) YES pump works (press a
coffee button)
YES continue with point f)
NO continue with point d)
d) YES both coffee buttons
are working
YES continue
NO replace electronic control
board
e) YES thermostat on pump is
defective
YES replace thermostat
NO replace pump
f) YES fine wire fuse(s)
(167 °C) on thermoblock defec
tive
YES replace electronic con
trol board, if necessary replace
thermoblock
NO continue
g) YES wiring is okay
NO continue with point 4.3
YES replace electronic con
trol board
NO replace defective cables
4.2 Both coffee buttons
are blinking 3x fast
YES thermoblock is hot
NO self test ok continue
YES replace NTC tempera
ture sensor
NO replace thermoblock