9.
ERROR
DISPLAY
&
CONTROL
* ERROR DISPLAY
a. When error happens, it is displayed on led lamp.(Main PCB LED 1)
1) R1 ERROR (It happens when R-SENSOR is OPEN or SHORT)
1.1- DISPLAY : On & off one time while LED is on.
1.2- CONTROL : Controlled by the condition of RT
(Unit : min)
RT-S TEMP RT-S ERROR 19ºC Down 20ºC Up
COMP. Operating TIME (ON / OFF) 20 / 30 15 / 35 22 / 28
1.3- CANCEL : when R-SENSOR is working normally.
2) D1 ERROR (It happens when D-SENSOR is OPEN or SHORT)
2.1- DISPLAY : On & off one time while LED is off.
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 : On & off two times while LED is off.
3.2- CONTROL : Return to next limit defrost time (80 min)
4) RT ERROR (It happens when RT-SENSOR is OPEN or SHORT)
4.1- DISPLAY : On & off two times while LED is on.
4.2- CONTROL : The system is normally operating but the controlling by RT-
SENSOR doesn’t work.
4.3- CANCEL : when RT-SENSOR is working normally.
5) DR ERROR
5.1- Display : LED is on continuously
5.2- Control : Deletion of function related door switch sensing
5.3- If door switch(open & close) is sensed, the error is terminated automatically.
10.
SHORT CIRCUIT
TEST
1) START : Button of M-PCB(SW2) is pushed 2 times and SW1 6 times.
2) CANCEL : Button of M-PCB(SW2) is pushed 1 time.
Cf. the system generally operates after the limit time 60 hrs. passes.
3) CONTROL : COMP & FAN will be on independent of the operating condition.
(There is no defrost mode on this test.)
11.
FUNCTION
OF
TIME
REDUCTION
1) HOW TO REDUCE: (There is no FAST KEY on PCB for MP.)
1 min : Click FAST KEY on e 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
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