Nespresso Maestria EF 285 Service Manual page 39

Check Error symptoms
6.6 Coffee temperature
too high (over
89 °C)?
6 Test coffee prepa-
ration (continued)
6.7 Fill capacity not
correct?
6.8 Coffee capsule not
ejected?
7.1 Milk frother not rec-
ognized by coffee
machine?
7.2 Milk frother does
not work?
7 Test milk frother
7.3 No or not enough
milk foam
7.4 Temperature of milk
foam out of range?
7.5 Milk frother does
not switch off?
8.1 Middle LED does
not light up
orange?
8 Test automatic
shut off (see "Spe-
cial settings" on
page 28)
8.2 Coffee machine
does not switch
off?
9 Descale coffee
9.1 Coffee machine
machine
calcified?
(if necessary)
10 Empty coffee
10.1 Coffee machine
machine (evapo-
cannot be emp-
rate residual
tied?
water)
11 Final cleaning
12.1 Safety inspection
12 Perform safety
not passed?
inspection (see
12.2 No errors found
"Function tests"
according to check
on page 116
list?
T R O U B L E S H O O T I N G
Measure /
repair work
YES
- check for calcification
- check temperature sensor
- check electronics
NO - continue
YES
- check water circuit (leakages)
- check flow meter
- check push/turn control
modules
- check electronics
NO - continue
YES - check brewing unit
NO - continue
YES
- check milk frother
- check wiring of milk frother
connector
- check electronics
NO - continue
YES
- check milk frother
- check push/turn control for
milk frother operation
- check milk frother connector
- check electronics
NO - continue
YES
- check spring whisk
- check milk frother
NO - continue
YES - check milk frother
NO - continue
YES - check milk frother
NO - continue
YES
- check push/turn control
modules
- check wiring
- check electronics
NO - continue
YES
- check push/turn control
modules
- check electronics
Continue
YES - Descale coffee machine
(see user manual)
NO - continue
YES
- check push/turn control
modules
- check electronics
NO - continue
Clean coffee machine
YES - check wiring / assembly
NO - continue
YES - For further investigation
please contact the Nespresso
Service Division
End of check list
Maestria / Gran Maestria service manual
Further measures /
repair work
Descale coffee machine (see
user manual).
Replace damaged parts.
Clean or replace flow meter.
Replace damaged parts.
Clean or replace spring whisk
Replace damaged parts
Inform customer to descale
coffee machine according to
user manual and to use the
specified descaling product.
Repeat safety inspection after
resolving problem(s).
39