7-3. Defrost Mode
INPUT
CONTROL OBJECT
●
Total COMP Work Time
●
COMP Working Rate
●
Total Door Open Time
●
RT
●
Defrost Mode
A.
When total operation time of compressor becomes: 6, 8, 10, 12 hours.
ⓐ
any error mode R1 D1 F3 C1 RT/S Door SW error happens
●
Conditions of Defrost Mode
ⓐ
any error mode-R1, D1, F3, C1, RT/S, Door SW error- happens.
ⓑ
or, running rate of COMP (per 2hrs of total operation time) is more than 90%.
ⓒ
or, total door open time is over 3 minutes.
ⓓ
or, ambient temperature (RT) is more than 40
°
C.
B.
Even if the above condition “
A
” is not satisfied,
ⓐ
Defrost mode starts immediately when total operation time of COMP is 14hrs.
ⓑ
or, defrost mode starts immediately as long as total time (COMP on time + COMP off time) is 60 hrs.
A. General Defrost Mode
ⓐ
How to start: By conditions of defrost
ⓑ
Process :
General operation
→
“PRE-COOL”
→
Defrost Heater on
→
Pause(10 min )
→
General operation
※
PRE-COOL: When the defrost heater works, the temp. of freezer increases.
●
Defrost Mode
So the COMP works for 25 min before defrost mode.
ⓒ
Limited Time of Defrost Heater
●
40 minutes: Heater turns off when “D SENSOR” is OPEN or SHORT.
●
50 minutes: Heater turns off after 50 minutes.
ⓓ
Heater Off: When the temperature at “D SENSOR” is over 10
°
C
PRE-COOL
Defrost Mode
Pause
Compressor
ON
OFF
OFF
B. Forced Defrost Mode
ⓐ
How to start: by press “UP” button for continuously and “S-COOL” button 5 times.
ⓑ
Process: same as General Defrost Mode except “PRE-COOL”
※
Heater is on Initial 30 seconds even though the temp. at “D SENSOR” is over 10
°
C.
(for TEST)
Fan
ON
OFF
OFF
Defrost Heater
OFF
ON
OFF
(for TEST)
ⓒ
How to confirm: by press “UP” button for continuously and “DOWN” button 5 times
.
And then, the mode displays.
ⓓ
Display : led lamps “3”
&
“
S-COOL
” on, “4” & ”5” on/off continually
21
Содержание FN-510DW Series
Страница 7: ...3 Cold Air Circulation 6 ...
Страница 8: ...4 Wiring Diagram 7 ...
Страница 9: ...5 PCB CIRCUIT DIAGRAMS 8 ...