7 Troubleshooting; Check List For Coffee Machine (All Models) - Nespresso Citiz Service Manual

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