Daewoo ERF-384, Service Manual

Page: 63 / 67

Nº FUNCTION CONTENTS
7 DEFROST
MODE
8 INTIAL
DEFROST
9 PREVENTION
OF COMP.
RESTART
10 ERROR
DISPLA Y
&
CONTROL
6 2
1) General Defrost Mode
1.1- Start: By determination of defrost.
1.2- • Process: general operation Heater on Pause (5 min) general
operation.
• Heater defrost: when the temperature at D-sensor is over 10°C,
heater turns off.
• Limit time: 80 min (If the system is on D-sensor error, heater is off
by time (30 min).
• General Defrost Mode is on for initial 30 seconds after heater is on.
(for TEST)
2) Forced Defrost Mode
2.1- Start: pressing CONTROL button for 5 seconds continuously.
2.2- Process: same as General Defrost Mode.
1) When power is on, if the temperature at the D-sensor is under 3.5°C,
then General Defrost Mode starts.
2) When the INITIAL DEFROST Mode starts, heater will be right on and
defrost mode will starts.
1) The COMP can’t be on within 40 min after comp. is off even though
R-sensor is on condition. (This is to protect comp.) FUNCTION of LOW RT.
2) The COMP can’t be on within 6 min after comp. is off even though
R-sensor is on condition. (This is to protect comp.) DEFAULT OPERATION.
ORDER OF PRIORITY FOF THE ERROR DISPLAY
1) R1 ERROR (It happens when R-SENSOR is OPEN or SHORT)
1.1- DISPLAY: R1 ERROR displays on the 88 segment.
1.2- CONTROL: controlled by the condition of RT
1.3- CANCELATION: when R-SENSOR is working normally.
2) D1 ERROR (It happens when D-SENSOR is OPEN or SHORT).
2.1- DISPLAY: D1 ERROR displays on the 88 segment.
2.2- CONTROL: return to the limit defrost time of Defrost (30 min).
3) D2 ERROR (It happens when heater is off by time (80 min).
3.1- DISPLAY: D2 ERROR displays on the 88 segment.
3.2- CONTROL: return to the limit defrost time of Defrost (80 min).
4) RT ERROR (It happens when RT-SENSOR is OPEN or SHORT).
4.1- CONTROL: the system is normally operating but the controlling by
RT-SENSOR doesn’t work.
Pcb Control Functions
RT-S TEMP RT-S ERROR ~24ºC 25ºC ~40ºC
COMP. operating rate % 40% 30% 44%
ON/OFF (min) 20 / 30 15 / 35 22 / 28
NOTES ERROR Low RT TEMP General