Nespresso Essenza C91 - Understanding Machine Status Lights

13
Operation
ServiceManualC91/D91 enVersion1.0
Coffeemachinestatus
AfterpressingtheOn/Offbutton,anautomatic
selftestisperformedtocheckif
 theNTCisconnected,
 theNTCisshortcircuited,
 thethermoblockreachesthestandby
temperaturewithin2minutesinbrewing
mode.
Adetectedfailureisindicatedbytheback
lightedcoffeebuttonaswellastheoperating
modeslistedinthefollowingtable.
(
1
H
z
)
Operatingmode C offeebutton LEDsignal
Off off
Heatup(coffee) blinkingslow
Ready on
Systemtoohot blinkingfast
Brewcoffee/rinse blinkingslow
Heatup(descaling) blinkingfast
Descalingready blinkingfast
Pumpon(whiledescaling)  blinkingfast
Emptyingwatersystem blinkingfast
Failure blinkingthreetimesfast