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Technical BulletinTB001365 RE155

Profile: GeneraleIssue : September 2011Compiled by: P.K.Approved by: P.U.Revision: 1

Title : Servicing Embraco variable rotationscompressor.

Products concerned:Combi with variable rotations compressor Embraco: 4DAA…, 3BL1920FW…, 3BL19210F…, 3BL192AFW… , 3DAANX…, MSZ922NDF…, MSZ926NDF…, EBD18323F…, EBDH20303F…, FFUL1820P…, FFUL1820X.

Platform : CL2008 / Artica

Factory : LODZ (34) MANISA (81)

S/N: tutti

Intervention to be doneTo assist the variable rotations compressor Embraco it isnecessary:

1. Separate the electronic board from compressor.

2. Do the measurements on 3 pin of the compressor aspresented on Figure 1 and 2. The measurementsbetween three pins of the compressor should benearly the same (Ohm value +/- 10%). In oppositecase replace the compressor. This control must bedone while the compressor is OFF and refrigeratornot power supplied.

3. To check the inverter electronic board it is necessaryto follow the circuit contiunuity measurements usingan electronic multimeter:

-1 STEP: put the red pin on the neutral wire ofexternal power supply (blue) CN01 and black pinon the start-up wire (black) CN05B as shown onFigure 3. If there is a continuity the circuit can beconsidered OK.

DISCLAIMER

Fig. 1

Fig. 3

Fig. 2

© 2011 Indesit Company

Attention: before starting teh intervention make sure that the product is not electrically supplied.

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Bollettino TecnicoTB001365 RE155

© 2011 Indesit Company

Intervention to be done

-2 STEP: put the red pin on the line wire of externalpower supply (brown) CN01 and black pin on the start-up wire (black) CN05B as shown on Figure 4. Ifthere is a continuity the circuit can be consideredOK.

-3 STEP: put the red pin on the neutral wire ofpower supply (blue) comming from product’s mainboard C01B and black pin on the start-up wire(black) C05B as shown on Figure 5. If there is a continuity the circuit can be considered OK.

- 4 STEP: put the red pin on the line wire of powersupply (brown) comming from product’s main boardC01B and black pin on the start-up wire (black) C05B as shown on Figure 6. If there is a continuitythe circuit can be considered OK.

- 5 STEP: put the black pin on the neutral wire ofexternal power supply (blue) CN01 and red pin on the start-up wire (black) CN05B as shown on Figure 7. If there is a continuity the circuit can beconsidered FAILED.

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Attention: before starting teh intervention make sure that the product is not electrically supplied.

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C00089704 ELECTRONIC MULTIMETER

Spare Parts to be used

Bollettino TecnicoTB001365 RE155

At the moment only kit (inverter board + compressor) is availableC00277398 kit Compressor VEGZ11CC00286627 kit Compressor VEMX9C

Special Tools

Fault Code to be reportedTo be signaled in the report

G C 53Doesn’t work

Compressor

Electromechanical components

© 2011 Indesit Company

Intervention to be done

-6 STEP: put the black pin on the line wire of externalpower supply (brown) CN01 and red pin on the start-upwire (black) CN05B as shown on Figure 8. If there is acontinuity the circuit can be considered FAILED.

-7 STEP: put the black pin on the neutral wire of powersupply (blue) comming from product’s main board C01Band red pin on the start-up wire (black) C05B as shownon Figure 9. If there is a continuity the circuit can beconsidered FAILED.

- 8 STEP: put the black pin on the line wire of powersupply (brown) comming from product’s main boardC01B and red pin on the start-up wire (black) C05B asshown on Figure 10. If there is a continuity the circuit canbe considered FAILED.

Fig. 8

Fig. 9

Fig. 104. If in above steps there were not found any failures checkif wiring from product’s main board and compressor’sinverter board CN01B has a continuity. If the wiring resultsOK the product’s main board should be replaced.

Attention: before starting teh intervention make sure that the product is not electrically supplied.