Krups EF 472, Service Manual

Page: 14 / 42

Service Manual EF 472
14
T R O U B L E S H O O T I N G
4 T R O U B L E S H O O T I N G
4.1 Check list
With an acceptance
check in accord-
ance with this checklist,
errors are quickly found
and corrected with the
appropriate measure.
Therefore, adhere to the
sequence of the check
list.
Repair every occurring
error and work the check
list 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 with point 1.2
1.2 Mains cable dam­
aged
YES ­ replace the mains cable
NO ­ connect the cable from
machine to the mains and con­
tinue with point 2.1
2 Check mechani­
cal components
2.1 When the coffee
machine is
switched off, the
cup tray remains in
the vertical position
YES ­ continue with point 2.2
NO ­ check if the capsule con­
tainer and the cup tray are cor­
rectly inserted and mounted YES ­ replace damaged or
deformed cup tray
2.2 Closing handle
functions
YES ­ continue with point 2.3
NO ­ it is very difficult or almost
impossible to close the handle
and to press it all the way down YES ­ replace the compact
brewing unit
2.3 The capsule is
ejected correctly
YES ­ continue with point2.4
NO ­ replace compact brewing
unit
2.4 Seal on the capsule
cage is damaged
(check seal with
your finger)
YES­ replace the compact
brewing unit
NO ­ continue with point 3
3 Fill water tank 3.1 Water tank leaks
YES­ replace water tank
NO ­ continue with point 4
4 Activate the On­
Off switch to per­
form the auto­
matic self test.
4.1 Cup tray folds down
YES ­ continue with point 4.2
NO ­ locking mechanism works YES ­ replace damaged or
deformed cup tray
NO ­ replace locking mecha­
nism
4.2 The coffee machine
is not working
(does not function)
YES ­ a) mains cable is okay YES ­ continue with point b)
NO ­ replace mains cable
YES ­ b) on­off switch is okay YES ­ continue with point c)
NO ­ replace on off switch
YES ­ c) pump works (press a
coffee button) YES ­ continue with point f)
NO ­ continue with point d)
YES­ d) both coffee buttons
are working YES ­ continue with point e)
NO ­ replace the entire elec­
tronics
YES ­ e) fine wire fuse (128°C)
on the pump is defective YES ­ replace fine wire fuse
NO ­ replace pump
YES­ f) fine wire fuse(s)
(167°C) on the thermoblock
defective YES ­ replace entire
electronics, if necessary, even
replace thermoblock
NO ­ continue with point g)