Daewoo Frs 2021 Service Manual

 
SILENT (Silence Mode) INPUT
  Control Object
  1. CDS SENSOR
  5.
 COMP  
6.  R -FAN  
7.  F -FAN  
8.  CUSTOM -LCD   CONTENTS
  REMARKS
   
1.
 Purpose of Silence mode   
To reduce refrigerator noise at night by decresing fan RPM to a minimum d\
egree  
   
2.  Condition  to start 
 1)  The optical o r light sensor in top middle of control panel senses surround light and \
Silence mode starts if the amount of light sensed is below the standard \
value for 
more than 1 minute.  
( The mode does not...

 
 
CO NTE N TS R EM ARKS 
 
1. F an  volt a g e o f e ach  c o ntr o l  m ode 
 
2. C ontr o l  a gain st  ( u nder) lo ad ( L oad C ontr o l) 
1 ) P urp o se : To  re sto re  F /R-te m pera tu re  w hic h  h a s ris e n b y lo a d (m uch  fo od s in  o r 
fr e qu en t  d oo r o pen in gs) a s s o o n a s p ossib le 
 
2 ) Dis p la y :   S PEED  lig hts  u ntil  t h e m ode a nd s p eed ic o n s flic ker. 
 
3 ) C ondit io ns to  s ta rt ( fr o m  b oth  N orm al  a nd S ile nce) 
 a .   F  o r R  d o...

 
CONTENTS
  REMARKS
   
3. 
Control  Time Chart  of Each  Mode  
   1)  Start & stop of load control mode (Normal Control)  Door
F/S
F Fan
R/S
R Fan Door Open
30 sec. after Open
Load Mode Start Frz. Load Stop Rez. Load Stop On + 5deg
On + 5deg Frz. Overload Input
Frz. Start Condition Frz. Stop ; 
after 20min. 20min.
20min. Ref. Load14V
14V
12V
12V   
2) 
Start & stop of load control mode (Silence Control)  Door
F/S
F Fan
R/S
R Fan Door Open
30sec. after openLoad Mode StartRef. Load StopFrz. Load Stop On...

 
CONTENTS
  REMARKS
   
4. 
Flow Chart of Load Control Mode  
 
  Sart
F/R door open time is over 30 sec. ?
F/S ON + 5deg?
R-sensor ON + 5deg?Fan RPM
      F Fan : 12V
      R Fan : 12V
      C Fan : 10V Fan RPM
          Normal    Overload
F Fan :  10V         12V
R Fan :  10V         12V
C Fan :  10V         12V Overload of both
compartments Y
N
Freezer
Compartment Overload Refrigerator
Compartment
Overload Y
N
Y
N
F load control ;
over 20 min. ? F-sensor OFF point ?Overload mode control Overload mode...

 
Defrosting Cycle INPUT
  Control Object
  1. 
 Total comp.  work time  
2.   Comp.  work rate  
3.   RT  temperature  
4.   Total door open time   1. 
Defrosting Mode   CONTENTS
 
REMARKS  
1. 
Conditions to start  defrosting cycle 
  1)   Total comp. work time  : 6, 8, 10 hours 
  2)   C omp. work rate  (by the 2 hours ) :  over  65% 
  3)   Total door open time  : 3 minutes   
(Any door  - F or R  – open time is over 3 minutes.)  
  4)   Total time of [comp.  ON + comp.  OFF]  : 60  hours  
  5)...

 
CONTENTS
  REMARKS
   
3. 
Flow Chart of Defrosting Start  
  Start
Ambient temp. is over 35C ?Comp. work time is over 10 hours ? Total time is over 60 hours ?
Comp. work time is over 6 hours ?
Any error ?Comp. work rate is over 65 % ?
EndDefrosting mode starts. Yes
Yes
Yes
Yes
Yes
Yes No
No
No
No NoNo
Comp. work time is over 2 hours ?
Total door open time is over 3
minutes ? YesYes
No
NoComp. work time is over 8 hours ? No
No
 
     
 
 
 
   
 
 
 
 
 
 
 
 
 
 
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Defrosting Mode INPUT
  Control Object
  1. 
Defrosting Cycle   1. COMP
 
2. F -FAN  
3. R -FAN  
4. HEATER   CONTENTS
  REMARKS
   
1. 
Defrosting Mode  
  1) Time ; 50 minutes  
2) C omp. /  F-fan :  ON 
R -fan  : Control  
H eater : OFF  
3)  If F
-
 senso
r < - 27C, PRE-COOL becomes OFF. 

 
 

                        
 
 1) 
If D-
sensor > 10C, Heater becomes OFF. 
 2) 
In case of Heater return by time limit of  40 or  80 min  
(F3 -E rror ) 
3)  Heater is ON for 30 minutes (time limit) in case of...

 
 
Error Display (LCD Display of F-PCB) 
 
 
 
 
 
 
 
  INPUT
  Control Object
  1.
 Temperature Control Buttons  CUSTOM LCD  CONTEN
TS  REMARKS  
 
1. 
How  to start  
1)  Set   “LOCK ON ” first.  
2) Push  “LOCK ” button 3 times while pushing  “REF SET. ” button  at the same time . 
 
2.  Display   
E rror code is displayed on Freezer temperature display part.  
 
3.  How to stop  
1)  Push  “LOCK ” button 3 times w hile pushing “REF SET. ” button . 
2)  It stops automatically 4 minutes after the...

 
CONTENTS
  REMARKS
   
6. 
 Control  Way of Errors (if any)  
 
 1) F1 ERROR      a. Cause : F-sensor disconnection / short (pull-down) 
   b. Control : Comp. / F-fan -> ON for 25min., OFF for 25min.           
   c. if F-sensor is normal, the error is terminated automatically. 
  
 2) r1 ERROR
 
   a. Cause : R-sensor disconnection / short (pull-down) 
   b. Control  : Condition of ambient temperature 
 RT/S
 
 I
n  ERROR Work rate 
ON/OFF  
8 / 12 
7 / 13  8 / 12  8 / 12 9 / 11 
   c. If R-sensor is...

 
Forced Defrosting INPUT
  Control Object
  1.
 “ FRZ SET. ” button  
2.  “ REF SET. ” button  
3.  “ LOCK ” button   Defrosting Mode
  CONTENTS
  REMARKS
  1. 
 How to start  
-> Set “LOCK ON” first, then push “REF SET.”  button 5 times while 
 pushing 
“FRZ SET. ” button  simultaneously . 
 
2.   How to proceed  
   1) Delete  Pre -cool mode. (Others are same as normal defrosting.)  
   2) Heater is ON regardless of D -sensor temp. at first 30 seconds.  
      (  Check of defrosting current)     
6...