AEG Electrolux Service 7000 Operations Instructions download pdf (Page 16)

Switch Mode Power Supply AC 7000

Page 16 of 24 0208 BAL, en

10. Fault Location

Only trained and qualified personnel are permitted to perform any

work on the unit.

10.1 No Output Voltage

- Mains voltage applied?

- Is the bridge X14:1 and X14:2 provided or is the contact for

external on/off closed?

- Output poled incorrectly?

- Has the U

> monitoring device responded (U

> LED lights

up)?

- Press reset and check the U

> setting with U

potentiometer

(refer to Chapter 5.2.6).

- Has the overtemperature monitoring device triggered (LED ϑ

lights up)?

- Press reset!

If all the points listed above are in order, proceed as follows:

- Unscrew the cover!

- Observe the safety instructions on the front of the unit!

- Check the plug connections for correct fit!

- Check fuse F1 (Type 6x32 M 2 A 500 V) on circuit card A1.

- Check fuse F2 (Type 5x20 T 0.25 A 250 V) on circuit card A1.

- Check fuse F3 (Type 5x20 T 0.25 A 250 V) on circuit card A1.

- Check fuse F1 (Type 6,600 CP URD 22x58 63 A 660 V) on

circuit card A10.

If one of the fuses has triggered, replace the fuse and restart the unit.

If fuses A1-F1, A1-F2, A1-F3 or A10-F1 trigger again, return the unit

to the works for repair.

10.2 Deviation of the Output Voltage

- Is the unit running in current limitation due to overload?

- Reduce the load!

- Is the setting of the U

potentiometer incorrect?

- Adjust the output voltage (refer to 5.2)!

- Are bridges X13:9-10 and X13:7-8 provided?

- Fit the bridges!

- If an external sensor lead is used, is the sensor lead open?

- In the case of an external set value input, is the set value cor-

rect?

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AEG Electrolux Service 7000 Operations Instructions Page 16

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