AEG 68001K-IN 92C Schematic

SERVICE MANUAL

HOBS

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Ausgabe: 04.08

Publ.-Nr.

599 519 523

685 EN

Repair-Instruction for induction hobs

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1 General Information

These instructions serve the repairing of autarkic cooking hobs and cooking hobs in combination with an oven with 3 or 4 inductions cooking zones respectively of the type E.G.O.. Also includes hobs with 2 induction zones (Domino, Mixed, Mixed gas) and the Frontline appliance series.

Please search for the corresponding alarm symptom and then go through the alarm remedy measures from top to bottom. Information concerning the replacement of parts is to be found in the corresponding replacement instructions or are included with the spare parts.

All work is only to be carried out on the induction modules and the heating elements are only to be carried out after they have been disconnected.

1.1 Leak current

A leak current of 5mA is normal and is therefore much higher than with other appliances.

1.2 Standby

The Standby power consumption amounts to < 1W (Induction plus user interface in the autonomous, exception Frontline up to 2W). The µprocessor for the measuring of the coil temperature is deactivated in standby, i.e. should the cooking hob be heated up to hot pan being on the zone, no heating display "H“ is displayed when switched off. In this condition, the ventilator is also not switched on by external heating.

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1.3 Block Diagram/Hob elements

Coils incl. Temperature sensors.

Cover plate

Cooling fan

Touch control w. carrier

Coil carrier

Induction module w. plastic housing incl. mains terminal

Power mod. Left

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Filter pcb

PowerMod. Right

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2 Alarm Symptoms

2.1 Appliance not functioning at all, cannot be switched on

References e.g. (1) refer to the illustrations in Chapter 2.8

Alarm Symptom Cooking

Hob Display

House fuse triggered None Incorrect connection at

Final induction phase Cooking field cannot

be switched on. Normally no "pips" approx. 4 sec. after mains voltage is applied respectively no quick flashing up of the display in the cooking zone with not selfsufficient cooking zones or front line appliances. No 5VDC betw. Pin 1 +

Connector of the cable

Touch control/display

Every 5-10 sec "beep" of touch control

Only Frontline appliances: cooking zone can not be activated. Display fully on for more than 5 sec.

None Electronic system no

No mains voltage or

None N not connected to

All indications ON

Possible Alarm Cause

the power connection terminal

defect. longer reacts

incorrect connection (1 phase missing ->no control voltage; N not connected to terminal 4 and 5 not connected)

3 of the Bus for the Touch Control

to the Touch Control

Display not inserted. Fuse strip conductor burnt out and/or final induction

phase defect

defect.

terminal 4 or 5.

Flat band cable between user interface and glass (touch keyboard) not plugged correctly.

Alarm Remedying

(1) Test the pin assignment and 230VAC between N and the phases on the supply line. See chapter 3 Testing Power Component

Disconnect the appliance from the mains using the house fuse, reactivate after approx. 10 sec..

(1) Test the pin assignment and 230VAC between 4 N and the 2 phases on supply line terminals 1 and 2. Both of the "N“s should be connected to terminals 4 + 5, if appr. jumper.

(2) Test 1+3 5VDC on the underside of the cooking field (corresponds with the external lines of the bus between filter and Touch Control), if not applied, replace the Filterboard. Caution: this is difficult to test from underneath using normal test probes! (3) Test connector at the filter and Touch Control. Reapply the mains voltage. See chapter 3 "Check power section'"

If 5VDC exist and power component already replaced: replace

that the Touch Control is applied to the glass

(1) Test the pin assignment and 230VAC between 4 N and the 2 phases on supply line terminals 1 and 2. Both of the "N“s should be connected to terminals 4 + 5, if appr. jumper.

Check line for seat and correct position (contact direction), see capter "References Frontline"

Touch Control, ensure

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2.2 Individual cooking zones do not work (partially) or work incorrectly or cannot be used

Alarm Symptom Cooking

Hob

Possible Alarm Cause

Alarm Remedying

Display

Pan does not heat up.

Flashing

Coil not correctly

Distance between coil

Display "F" with 2 hobs with all pots (also 1 hob with 3 hob models)

Should the above not succeed, replace the

No power on all hobs Normal

Individual buttons cannot be used or cannot always be used.

Cooking hob power too low or not provided for a longer duration. Unsuitable pots

Induction coil is not

Fan does not start. 1) When setting a cooking phase >0, the

"H" in display when cooking hob and oven cold and switched off.

Normal cooking phase

"F“

Flashing "F“

cooking phase

Touch Control defect. 1) See Chapter 5. Touch Control Autarkic

Normal cooking phase

"H“ Temperature sensor

Pan in the border area of the pan detection and only works with low power Pan not detected. Check whether the pots or pans are

connected.

and glass ceramic too large.

1 phase missing ; only possible with induction SW.Ver.

0.50.

Demo mode activated.

Incorrectly installed, exhaust not possible to the front.

(bottom bent) applied to the glass

ceramic

defect.

Use different pot or this pot on a smaller hob. See Chapter 4 Pot Detection Information

suitable for induction. See 4 Pot Detection Information Check whether the coil lines are connected and the torque has been adhered to.

Check whether the coil is applied to the glass ceramic and whether the glass was pushed was pushed down when screwing in position.

(1) Test the pin assignment and 230VAC between 4 N and the 2 phases on supply line terminals 1 and 2. Both of the "N“s should be connected to terminals 4 + 5, if appr. jumper.

affected power component.. See Chapter 5.2

Cooking Hobs Information..

2) Should this not help, replace Touch Control.

(4) Change installation situation.

See Chapter 4 Pot Detection Information Check whether the glass ceramic w as

pushed down when being screwed in position and the coil has been correctly positioned.

fan runs at a slow speed. If not, check the fan for foreign bodies, remove these where appropriate.

2) If necessary, replace fan.

3) Should this not succeed, replace power component.

Replace corresponding coil with temperature sensor. Also see Instructions "E4“.

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2.3 Alarm message "E“

When the appliance is switched on, "E“ / „xx“ Alarm Number is displayed in the timer display. With Frontline the display of the front zone indicates the error number when switching on. The affected zones are subsequently displayed with an "E" in the cooking phase display and are thereby disabled. The other zones can still be used.

example (left touch control / right indication in the cooking zone):

1) Display alarm number after switching on for 10 sec.

Alarm number

2) 2 zones are disabled.

E0 0

Alarm Symptom

Alarm display in the Touch Control display.

"E3“ Under voltage or over

"E4“ Coil temperature sensor

Display in the Cooking Hob Timer

"E0“

Possible Alarm Cause

Incorrect configuration on the Filterboard.

voltage, is only displayed for 10 sec. after voltage has been applied.

defect or not correctly connected.

Alarm Remedying

Disconnect cooking hob from mains, wait 10 sec and reconnect the mains supply. Should alarm still be displayed, replace filterboard..

1) Disconnect cooking hobs from the mains, wait 10 sec. and reconnect the mains.

2) Should alarm still be displayed, test L1 against N (4), test L2 against N (5) at the mains

connection

3) If OK, see See Chapter 3 Testing Power Component

(5)Inspecting the contacts on the

power component. Is the connector inserted?

2) The resistance at room temperature (25°C) amounts to 1000 Ohm. This corresponds to approx. 3.3 Ohm per +1°C deviation. If not in this range, replace affected coil including temperature sensor.

3) Should above not succeed, replace power component concerned.

(1).

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Alarm Symptom

Display in the

Possible Alarm Causes

Alarm Remedying

Cooking Field Timer

larm display in the

Touch Control

"E6“ Communication

"E7“ Alarm Temperature

"E8“ Communication

"E9“ Incorrect

"E5“ 1 phase missing 1) Check the house fuse.

2) Check the pin assignment, (1) test L1 against N (4), test L2 against N (5)

3) If ok, see Chapter 3.

1) (5)Checking of the contact with the power interference between filter and power component.

or temp. Sensor is defective/missing

Note: a norm requirement with regard to new powerboards results in the power supply for the electronics on the powerboard being deactivated in the case of a missing or incorrect temp. sensor value.

sensor heat sink power component

interference betw. filter and Touch Control. Central line at RAST2.5 connector / line defect.

configuration for the Touch Control on the Filter board.

element. Is the temp. Sensor connector locked in place or the dummy connector (3 zone appliances, no coil connected) inserted?

2) The resistance at room temperature (25°C)

is 1000 Ohm.A deviation of +1°C corresponds to approx. +3.3 Ohm Replace the corresponding coil incl. Temperature sensor if not in this zone.

1) Check the cables between the two boards.

(6), Reinsert connector. Or replace cable.

2) Should all of the zones on the cooking hob

be affected (Display "E" in the cooking phase display), replace filter board .

3) Should the above not succeed, replace

power component. Replace affected power component.

1) (3) Inspect connector at filter and the

Touch Control. Replace cable or filter and Touch Control. Reconnect mains voltage.

2) Should above not succeed, replace Touch

Control.

3) Should above not succeed, replace Filter

board. Disconnect cooking field from the mains. Wait 10 sec. and reconnect to the mains voltage. Should alarm still be displayed, replace Filter board.

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