SERVICE BULLETINTV WM AC Ref. MWO No OF ISSUED :

ISSUE DATE :

SUBJECT

Applicable Model

Applicable Sr. No.

I/C : INTERCHANGEABILITY CODE N/C : NUMERAL CODEA Interchangeable:Old and new parts can be used in products 1 To improve performance

as the bulletin regardless of manufacture date 2 To improve productivity

R&D

BOld parts can be substituted for new parts : Old parts can be used in previous3 To improve reliability

products only. But new parts can be used regardless of manufacture date. 4 Change of material or dimension

CNew parts can be subtituted for old parts : Only new parts can be used5 Addition

in products regardless of manufacture date. 6 Deletion

Q.A.

D Not interchangeable : New pafts can be used in new products only. 7 Correction

PROBLEMS DUE TO NO MEMORY BACKUP

...

REMARKS :

30/05/09

R&D/AC/SAC/

PAGE 1

EA18SCRPA1

C.S.

PROBLEM: WHEN COMPRESSOR STARTS, BLOWER MOTOR SPEED GOES VERY LOW.

REASON: IT IS DUE TO DRY SOLDER AT MOTOR FEEDBACK CONNECTOR.

CORRECTIVE ACTION: RESOLDERING IS TO BE DONE AT 3& 5 PIN CONNECTORS.

STEP 1 DESOLDER THE CONNECTORS CN2,CN4 & CN6 (SEE FIG BELOW)

STEP 2 CLEAN CARBON WITH BRUSH/ PETROL

STEP3 RESOLDER CONNECTORS USING FLUX. (SEE FIG BELOW)

Applicable Model : EA18SCRPA1

CONNECTORS CN2 & CN4

STEP 1

STEP 3CONNECTOR CN6