Nespresso Maestria EF 285 Service Manual page 36

36
T R O U B L E S H O O T I N G
Check Error symptoms
7.1 Coffee capsule
cannot be inserted
in brewing unit?
7.2 Lever cannot be
closed correctly?
7.3 Coffee capsule not
perforated?
7.4 Coffee flows in cap-
sule container and
drip tray?
7 Test coffee prepa-
ration (set dials of
Espresso and
7.5 Coffee temperature
Lungo push/turn
too low (below
controls to posi-
83 °C)?
tion 3 each)
7.6 Coffee temperature
too high (over
89 °C)?
7.7 Fill capacity not
correct?
7.8 Coffee capsule not
ejected?
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
"Function tests"
12.2 No errors found
on page 116
according to check
list?
Maestria / Gran Maestria service manual
Measure /
repair work
YES - check brewing unit
NO - continue
YES
- check lever
- check brewing unit
NO - start coffee preparation
YES
- check brewing unit
- check pump pressure
NO - continue
YES - check brewing unit
NO - continue
YES
- check for calcification
- check flow meter
- check temperature sensor
- check electronics
NO - continue
YES
- 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 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 and assem-
bly
NO - continue
YES - For further investigation
please contact the Nespresso
Service Division
End of check list
Further measures /
repair work
Replace damaged parts
Replace damaged parts
Replace damaged parts.
Check pump.
Descale coffee machine (see
user manual).
Clean or replace flow meter.
Replace damaged parts.
Replace damaged parts.
Clean or replace flow meter.
Replace damaged parts.
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).