Daewoo FR-4501K, Service Manual

Page: 19 / 68

18
OPERATION AND FUNCTIONS
NO
CONTROL
FUNCTION
CONTROL
OBJECTS
CONTENTS REMARK
3 Defrost
Period
Defrost mode 1. Determination of Defrosting Period
1) Total Run-tim of Comp : 10,11,12,13,14,15 hours
2) Run-ratio of Comp : over 80%
3) Total times of Door opening : over 3 times
4) Total time (Comp On + Comp Off): 60 hours
2. Explanation
1) Derosting starts with the following conditions, in case total
comp-run time passes 9 hours
- when an Error occurs
- when running-rate of Comp is more than 80%
- when total Door-opening times is more than 3 times
2) Defrosting starts unconditionally at each hour after total
Comp-run time passes 9 hours if terms of 1) is occurred.
3) Defrosting starts immediately when Total run-time is more than
15hours under the condition of 1),2) is not satisfied.
4) Defrosting starts immediately when Total time is more than 15
hours under the condition of 1),2),3) is not satisfied.
4 Defrosting
Mode
Comp Fan
Heater
1. Normal Defrosting
1) Starting by Defrosting Period
2) How to proceed : using heater
3) Defrosting mode and procedure
¨ ç
Proceeding time: 40min
¨ è Control Object: Comp On
FAN ON,Heater Off
¨ é Terminating Condition:
if R-sensor temp. is below
-4°C even though
it passes 40 min.
¨ ê Limit Proceeding time
- 30 min.: D1 ERROR
D-Sensor disconnection/
short-curcuit
- 80 min.: F3 ERROR
Normal Control state
¨ ë
Control Object: Comp Off,
FAN OFF,Heater On
¨ ì
Terminating Condition:
if D-sensor temp. is over 10°C
PRE-
COOL
HEATER
Defrosting