Samsung RS2521 Specifications download pdf (Page 62)

MICOM voltage

DOOR OPEN : 5V

DOOR CLOSE : 0V

Diagnostics

8-4) When FAN & DAMPER does not operate

"Check out the F-FAN with the Forced Operation selected"

1. Freezer FAN, Refrigerator DAMPER and COMP COOLING FAN remains off while COMP is turned off.

2. When Comp is ON, Damper does not always remain ON (including Forced Operaation) and when Refrigerator

temp reaches to set temp, Damper remains OFF.

3. When R-Room & Freezer get closeed after being opened, each Fan & Damper starts up immediately.

(Comp ON condition)

1) When Freezer FAN(F-FAN) does not operate

Start Forced Operation

Is it during

Forced Operation?

Start

YES

Normal F-FAN

Does Fan operate with

DOOR S/W presses?

YES

Change DOOR S/W

Is DOOR S/W normal?

YES

Check soldering / Change PCB

Is voltage of MICOM

#49 normal?

YES

Re-insert Connector CN71

Is insertion of

CN71(W/BLUE) of MAIN

PCB normal?

YES

Check soldering / Change PCB

Is voltage of MICOM

Pin #34 "HIGH"(5V)?

YES

Check soldering / Change PCB

Is IC3 #17 "LOW"?

YES

Check RELAY / Change PCB

Is Freezer-Fan RELAY normal?

YES

Re-insert Connector CN71

Is insertion of

CN71(BLUE) of MAIN PCB

normal?

YES

Change or repair FAN

Is FAN ASS'Y normal?

YES

Check wire assembly & connection status

Note

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Samsung RS2521 Specifications Page 62

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