Daewoo ERF-334M, Service Manual

Page: 58 / 67

5 7
Nº FUNCTION CONTENTS
Pcb Control Functions
12 SHORT
CIRCUIT
TEST
13
FUNCTION
OF
TIME REDUCTION
4.1- DISPLAY: REFRIGERATOR RED LED lamp in on & off two times.
4.2- CONTROL: The system is normally operating but the controlling by
RT-SENSOR doesn’t work.
4.3- CANCELATION: when RT-SENSOR is working normally.
1) START: by pressing TEMP CONTROL button 30 times continuously.
2) CANCEL: by pressing TEMP CONTROL button 30 times continuously
Cf. the system generally operates when the limit time 60 hrs. passes.
3) DISPLAY: LOW, MID, HIGH, VAC, SUPER LED lamps are all on
4) CONTROL: COMP & FAN will be on independent of the operation
condition.
(There is no defrost mode on this test.)
1) HOW TO REDUCE: (There is no FAST KEY on PCB for MP.)
1 min: click FAST KEY one time.
30 min: if you press FAST KEY continuously, you can reduce 30 minutes
on each second.
2) Practical Use: can be applied to reduce needless time on test.
EX) function of stop for 6 min, confirming the determination of defrost
mode.
• Protection for over-cooling of Room vegetable.
1) LOW RT TEMP: RT SENSOR
≤
24ºC
2) Hysteresis Difference: 1ºC
2.1- Mode of LOW TEMP: RT SENSOR
≤
24ºC
2.2- Mode of General TEMP: RT SENSOR
≥
25ºC
2.3- Mode of TEMP. just before control : 24ºC
≤
RT-S < 25ºC
• During operating under 19ºC, the system operates on LOW RT
Mode until the temperature arrives between 24ºC and 25ºC
RT-S: ~24ºC (operating) 24~25ºC (arriving).
• During operating over 25ºC, the system operates on General RT
Mode until the temperature arrives between 24ºC and 25ºC
RT-S: 25ºC ~(operating) 24~25ºC (arriving).
14 SUPER
OPTION
15 FUNCTION
OF
LOW ROOM
TEMPERATURE