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HD4686/30

2-3

- Electrical circuit:

When the appliance does not work, check the electrical circuit.

- Selftest electronics:
  (Assumption is that the temperature of both NTC’s is 

<

 40 °C, otherwise below table is not correct)

Step

Action

Led

On

Led 

40 °C

Led 

60 °C

Led 

80 °C

Led 

100 °C

Led 

Keep 

warm

Buzzer

1

Operate On/Off button and keep operated 
until step 5  

2

Apply mains voltage

on

If any NTC circuit is not functioning correct, further testing is being disabled and an NTC error code is generated 
(see NTC error below)

3.0

Operate Set Temp 

on

on

on

3.1

Operate Set Temp 

on

on

on

3.2

Operate Set Temp 

on

on

on

3.4

Operate Set Temp 

on

on

on

4.0

Operate Keep Warm

on

on

4.1

Operate Keep Warm (check on Water NTC)

on

on

on

4.2

Operate Keep Warm (check on Steam NTC)

on

on

on

4.3

Operate Keep Warm (check on buzzer)

on

on

5.0

Release On/Off button

all of

- NTC errors:

On/off led off, two leds blinking alternately:
Led 60 & Led 80 

  Water NTC out of range

Led 60 & Led 100 

  Steam NTC out of range

Led 80 & Led 100 

  Both NTC’s out of range.

- De-scaling

Fill the kettle with water up to three-quarters of the 
maximum level indication and press the on/off switch.
After the kettle has switched itself off, add white vinegar 
(8% acetic acid) or an appropriate descaler up to the 
maximum level indication.
Leave the solution in the kettle overnight.
Empty the kettle and rinse the inside thoroughly.
Repeat this procedure if there is still some scale left in the 
kettle.

REPAIR INSTRUCTION

- Cleaning filter

Clean the fi lter by rinsing it under a running tap.
If necessary, you can use a soft nylon brush.
The scale fi lter can also be cleaned in the dishwasher or 
clean the fi lter by de-scaling it in the same way as the kettle.
Let the fi lter soak in a cup of warm water with some white 
vinegar or an appropriate descaler.
Take the fi lter out of the cup and rinse it thoroughly.

OPTIONAL (accessories)

-  Tripple action Filter :  HD4991

Heater

On/Off
PCB

Buzzer
PCB

Water NTC

Control Board

Control

Board

Heater assy

Steam NTC

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