Question about LG 24 in. LD-12BW5 Free-standing Dishwasher

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When turned on the pump operates as normal, stops then starts aga

When functioning normally, the dish-washer first operates the pump for a short time, this stops and water enters. Now, the pump operates, stops, no sound of water entering, then pump starts again and on & on!
There is water pressure up to the machine. Sounds as if the central controller does not get a signal that there is pressure. Inlet valve problem? The LCD screen has not worked for a long time, except on drying cycle when it suddenly comes alive! Suspect damp air is making a contact to enliven the screen, but where????
Terry P

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Hi.

Regarding the fill problem, the electronic control board rarely fails in the way you described.

When filling stops beforetime in the cycle, this is caused by the water level sensing device.

Before replacing the timer board (that is probably faulty), the water level switch must be tested, disconnecting power and wiiring and reading Ohms to ensure that the switch is opening and closing, or by jumping the switch and controlling the cycle manually to prevent overfill.

To get parts and schematics see: Where do I find parts and diagrams?

Regards.

Posted on May 07, 2010

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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1 Answer

My washer wont spin out


Usually what happens here is that the pump to expel the water is not functioning, the normal problem here is a coin or hair grip gets lodged in the pump and stops the impeller from turning, generally the pump can be removed and opened up to remove the offending article and allow the impeller to operate again, once cleared of obstruction reassemble the pump and refit it. ( be aware, as the machine is still full of water, when you remove the pump the water will flood out so you need plenty of towels so soak up the water that spills.

Aug 05, 2016 | Samsung WF337AA Front Load Washer

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Where is the fuel pump relay and how can e serviced?


Description

*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine start ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging, thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump relay, which in turn controls the fuel pump.

Component Function Check
1.CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose (2) with two fingers.
1 : Air cleaner assembly


Fuel pressure pulsation should be felt on the fuel feed hose for 1 second after ignition switch is turned ON.
Is the inspection result normal? YES >> INSPECTION END
NO >> EC-466, "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ECM harness connector and ground.


Is the inspection result normal? YES >> GO TO 4.
NO >> GO TO 2.
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect IDPDM E/R harness connector F10.
3. Check the continuity between IPDM E/R harness connector and ECM harness connector.

Is the inspection result normal? YES >> GO TO 3.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK CONDENSER-1 POWER SUPPLY CIRCUIT-I
1. Reconnect all harness connectors disconnected.
2. Disconnect condenser-1 harness connector.
3. Turn ignition switch ON.
4. Check the voltage between condenser-1 harness connector and ground.


Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse (No. 32) from IPDM E/R.
3. Check 15A fuse.
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace fuse.
5.CHECK CONDENSER-1 POWER SUPPLY CIRCUIT-II
1. Disconnect IPDM E/R harness connector E18.
2. Check the continuity between IPDM E/R harness connector and condenser-1 harness connector.

3. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 13.
NO >> GO TO 7.
6.DETECT MALFUNCTIONING PART
Check the following.
??? Harness connectors E29, B10
??? IPDM E/R connector F10
??? Harness for open or short between IPDM E/R and condenser-I
>> Repair open circuit or short to power in harness or connectors.
7.CHECK CONDENSER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect dropping resistor harness connector.
3. Check the continuity between condenser-I harness connector and ground.

4. Also check harness for short to ground and short to power.
Is the inspection result normal? YES >> GO TO 8.
NO >> Repair open circuit or short to power in harness or connectors.
8.CHECK CONDENSER-1
Refer to EC-469, "Component Inspection (Condenser-1)".
Is the inspection result normal? YES >> GO TO 9.
NO >> Replace condenser-1.
9.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Disconnect ???fuel level sensor unit and fuel pump??? harness connector.
2. Check the continuity between IPDM E/R harness connector and ???fuel level sensor unit and fuel pump??? and ground.

Is the inspection result normal? YES >> GO TO 11.
NO >> GO TO 10.
10.DETECT MALFUNCTIONING PART
Check the following.
??? Harness connector E29, B10
??? Harness for open or short between ???fuel level sensor unit and fuel pump??? and IPDM E/R
??? Harness for open or short between ???fuel level sensor unit and fuel pump??? and ground
>> Repair open circuit or short to power in harness or connectors.
11.CHECK FUEL PUMP GROUND CIRCUIT
1. Check the continuity between ???fuel level sensor unit and fuel pump??? and ground.

2. Also heck harness for short to power.
Is the inspection result normal? YES >> GO TO 12.
NO >> Repair open circuit or short to power in harness or connectors.
12.CHECK FUEL PUMP
Refer to EC-469, "Component Inspection (Fuel Pump)".
Is the inspection result normal? YES >> GO TO 13.
NO >> Replace fuel pump.
13.CHECK INTERMITTENT INCIDENT
Refer to GI-42, "Intermittent Incident".
Is the inspection result normal? YES >> Replace IPDM E/R.
NO >> Repair or replace harness or connectors.
Component Inspection (Fuel Pump)
1.CHECK FUEL PUMP
1. Turn ignition switch OFF.
2. Disconnect ???fuel level sensor unit and fuel pump??? harness connector.
3. Check resistance between ???fuel level sensor unit and fuel pump??? terminals as follows.


Is the inspection result normal? YES >> INSPECTION END
NO >> Replace ???fuel level sensor unit and fuel pump???.
Component Inspection (Condenser-1)
1.CHECK CONDENSER
1. Turn ignition switch OFF.
2. Disconnect condenser-1 harness connector.
3. Check resistance between condenser-1 terminals as follows.


Is the inspection result normal? YES >> INSPECTION END
NO >> Replace condenser-1.
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1 Answer

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1 Answer

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