Philips HD4686/30 Service Manual page 2

REPAIR INSTRUCTION
- Electrical circuit:
When the appliance does not work, check the electrical circuit.
Heater assy
- Selftest electronics:
(Assumption is that the temperature of both NTC's is < 40 °C, otherwise below table is not correct)
Step
Operate On/Off button and keep operated
1
until step 5
2 Apply mains voltage
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
3.1 Operate Set Temp
3.2 Operate Set Temp
3.4 Operate Set Temp
4.0 Operate Keep Warm
4.1 Operate Keep Warm (check on Water NTC)
4.2 Operate Keep Warm (check on Steam NTC)
4.3 Operate Keep Warm (check on buzzer)
5.0 Release On/Off button
- 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.
Control Board
Control
Heater Board
Action
on
on
on
on
On/Off
PCB
Water NTC
Steam NTC
Buzzer
PCB
Led Led Led
On 40 °C 60 °C
on
on on
on on
on
on
on
on on on
on
on
- 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
HD4686/30
Led Led Led
80 °C 100 °C Keep
warm
on
on
on
on on
all of
Buzzer
on
2-3