Daewoo DWF-4230 Series, Руководство по обслуживанию

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3) CAUTION AND CHECKING FOR A/S
• If load is active as soon as the power switch is ‘ON’, check the driving TRIAC of load.
• Check the MICOM output terminal, if the load doesn't act although the TRIAC isn't anything wrong.
• If the ceramic condenser (C22, C17, C13, C15, C19, C25) using by protecting the noise between the GATE & t1 of each
TRIAC has a short circuit, it has no voltage drop between the T1 and GATE. Therfore, the TRIAC is not turn on.
• The TRIAC’s names and the values of the snubber & resistance of the total parts.
SM12JZ47 (12A), SM8JZ47 (8A) BCR1AM-12L
• CHECK the resistance of the T1 & T2 • CHECK the resistance of the T1 & T2
of the TRIAC. (
∞Ω
). of the TRIAC. (
∞Ω
).
• CHECK the total parts without fail, in • CHECK the total parts without fail, in
case the TRIAC has a short circuit. case the TRIAC has a short circuit.
THE GATE’S
THE
LOAD TRIAC’S NAME
RESISTANCES OF THE VALUES OF
RESISTANCES OF
LIMITED THE SNUBBER
TOTAL PARTS
CURRENTS
CW WASH
SM12JZ47
100
Ω
, 1/2W
100
Ω
, 1W+683K
BCR 12PM-14L AC 250V
CCW WASH
SM12JZ47
100
Ω
, 1/2W
100
Ω
, 1W+683K
BCR12PM-14L AC 250V
DRAINAGE BCR1AM-12L 470
Ω
, 1/4W
100
Ω
, 1W+103K
AC 250V
HOT / COLD
BCR1AM-12L 470
Ω
, 1/4W
100
Ω
, 1/W+223K
WATER AC 250V
PUMP SM8JZ47 100
Ω
, 1/2W
100
Ω
, 1W+223K
AC 250V
30
29
2) EXPLANATION OF CIRCUIT
• Push the power switch. And, in order to carry on the action of course selection, input the selection of frequency according
to each water level selection.
• The frequency of water level sensor in each water level becomes square wave and is sended to the MICOM.
If the water level is selected ‘HIGH’ in washing, water supply proceeds until inputing the frequency 22.9 KHz of ‘HIGH’ in the
MICOM terminal No. 33. Being finished the water supply, washing process is proceeded. After the washing process, water
level reaches to RESET point, and then after the (D)+30 seconds, the spin process begins.
• The value of the frequency between the MICOM terminal No. 33 and the GND.
3) CAUTION FOR A/S
• The output of the frequency in the WATER LEVEL SENSOR varies in accordance with temperature and using condition.
If it doesn’t input the output of the WATER LEVEL SENSOR in the MICOM, the error message is displayed as WATER
LEVEL SENSING ERROR (See page 22). In case of proceeding the water supply continuously in ‘HIGH’ water level, it is
desirable to change the WATER LEVEL SENSOR because of the defect in the WATER LEVEL SENSOR.
• Check the TR Q5 (A1270Y).
• Being checked with tester, the value of the voltage reaches about 4V.
• As the frequency is lower, the water level is higher.
WATER LEVEL NAME FREQUENCY WATER LEVEL
HIGH 22.9 KHz 340±15
MEDIUM 23.5 KHz 260±15
LOW 24.1 KHz 180±15
RESET 25.30 KHz
OVER FLOW 22.75 KHz
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WATER LEVEL SENSOR UNIT1/ CIRCUIT DIAGRAM
1) CIRCUIT DIAGRAM