Samsung DA99-00926B Specifications download pdf (Page 63)

13-5) When Defrost does not operate

Diagnostics

1. With a shorted-out F or R Defrost Sensor,the fridge operates normally excepting Defrost

(The fault can be picked up with self-diagnosis,POWER ON/OFF).

There will be Heating trouble with a shorted-out Temp FUSE,which contributes to Defrost by natural

Temp increase resulting in a Temp Control problem stemmed from the increased COMP OFF time.

When a F or R Defrost Sensor is faulty as OPEN,Heating will not be terminated,and COMP will remain

off following the Temp FUSE short-off.(The fault can be picked up with self-diagnosis, POWER ON/OFF)

Pre-Check

Dose Defrost

start operating when F or R

Forced Defrost button

pushed?

Is concerned

Defrost Sensor Temp higher

than 12



Is power supplied to

Defrost Heater?

Are MICOM #21 &#15

"HIGH"(5V)?

R Defrost Heater #21

F Defrost Heater #15

R Defrost Heater IC70 #11

F Defrost Heater IC52 #17

COMMON RELAY K72

R Defrost Heater K71

F Defrost Heater K70

Are IC70 #11 &IC52

#17 "LOW"(0.7V)?

Is Defrost

Heater Relay (K71,K70)

normal?

Is contact of

Connector N70 normal?

Start

YES

Maintain Forced Operation

for a certain time

PANEL PCB KEY

Press Super Cool and Fridge

at the same time for 5 sec.

Press any button 3 times when

the entire display blinks.

-.Once:Forced Operation

-.Twice:R Defrost

-.3 times:F/R Defrost

-.4 times:Cancel

Change PCB

YES

Check IC70 &IC52 /

Change PCB

YES

Check RELAY /Change PCB

YES

Check contact of Connector

CN70 again

YES

Is Temp FUSE

on EVAP. normal?

Change Temp FUSE

YES

Is Defrost Heater

shorted out?

Change EVAP.ASS'Y

YES

Check wire assembled

status/Chang MAIN PCB ASS’Y

• Refer to the list

(15-1)

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 88 89

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Samsung DA99-00926B Specifications Page 63

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