12
SHORT CIRCUIT
TEST
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, 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.)
13
FUNCTION
OF
TIME
REDUCTION
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
14
LOW COOLING
OPTION
1) R-SENSOR OFF POINT ADJUST (DOWN 1DEG)
2) If remove J1 when low cooling happens.
Initial residence[31.4k- ] + 1.5 k- =32.9 k-
Operating R-sensor OFF Point -
15
`
FUNCTION
OF
LOW ROOM
TEMPERATURE
1) LOW RT TEMP :
- LOW RT TEMP A : RT SENSOR ≤ 14-
- LOW RT TEMP B : 15- ≤RT SENSOR ≤ 17-
2) Control
•When Comp. is on, R-SENSOR HTR is off.
When it passes 6 min after COMP. was off, R-SENSOR HTR is on.
kCOMP. can’t be on within 40min after COMP. is off.
lWhen it is Mode of General TEMP. or RT-SENSOR ERROR(open or short), R-
SENSOR HTR is off.
- Condition of LOW RT TEMP A
- R-SENSOR Operating POINT increases 3-
- Condition of LOW RT TEMP B
- R-SENSOR Operating POINT increases 1-
3) Check function of R-S HTR
At initial operation,, R-SENSOR HTR turn on and off four times for 8sec.
Daewoo Electronics 48
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