Nespresso EF 474, EF 473 manual Coffee machine status, Operating status of coffee buttons

Operation

Coffee machine status

After switching on, 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.

Operating modes and detected failures are indicated by backlighted coffee buttons as listed in the following table.

Operating status of coffee buttons

Led off

Led on

Led blinking slow

Led blinking fast

Led blinking three times fast

Service Manual EF 473 / EF 474

Operating modes	left	Coffee buttons	LED signals
		right
Off			off
Heat up (coffee) / self-test			blinking slow
Ready			on
Heat up (descaling)			blinking fast
Small coffee / rinsing /			Button “small cup“ is blinking slow
programming			Button “large cup“ is on
Large coffee / rinsing /			Button “small cup“ is on
programming			Button “large cup“ is blinking slow
Descaling ready			blinking fast
Pump on/off			blinking fast
(while descaling)
Emptying water system			blinking fast
Failure			blinking three times fast
Stand-by			blinking slow, left/right alternately
Resetting			blinking slow
14			Version 1.0 en