Dishwasher not cleaning properly, think the prob is the bottom blade is a bit clogged but i am unable to see how take it out can you advise thank you

The unit has what is called a 3-way valve and is operated by a solenoid, depending on the age of the unit LG can let you know the part number for you to order this valve.

In addition to your hose being to high or crimped there may be a clog in the bottom drain and filter of the dishwasher. If it is 15 years old there is a high probability that it is clogged with food residue and should be cleaned and changed. You should look below the bottom sprayer unit.

Hello & Welcome to FixYa

Dishwasher not draining completely problem usually occurs due to clogged/blocked drain hose or the drain pump not working. First try to clean the drain hose and drain pump filter for any clogs, then check drain pump operation. If the problem returns after cleaning then it is the drain pump that needs replacement. Please get back to me if you have any other questions.

Kevin

Try cleaning out the air gap.  The air gap is not part of the machine, and is located on your sink. If this becomes clogged, it may cause the machine to not drain properly.  Also, I know you said you checked the drain hose and cleaned as far as the filter and chopper blade, but have you checked the lower filter?  There is a filter located underneath the machine that should periodically be cleaned.  To check this, you need to access the machine from underneath by removing the bottom vanity cover. Hope that one of these helps!  

you can replac the chopper as a seperate part, but will quickly clog, and destry ohter parts of the unit if removed. dont take this the wrong way but if you have a garbage disposer already rinse the dishes better to avaid further clogging of chopper

I have a Quiet Guard 4. Same problem so will describe my solution.
1. Remove bottom basket. Remove top basket.
2. Remove bottom washing arm. Unscrew (Gently but firmly) the centre post. Lift arm assembly up and out.
3. Remove overhead conduit. One screw at back, one at top (Philips #2 bit). Rotate whole assembly 45 deg right (Clockwise) and lift off of centre post.
4. Remove centre post (Pull straight up). Remove 4 screws (Star T-20 bit). Lift whole assembly out. Pop off screen and clean.
5. Remove cap over cutter/chopper. There is a single screw at front left (under assembly removed in 4). Remove screw (Star T-15 bit) and cap (Needs some wiggling to free it up). Remove cutter and filter. It is on a spring loaded pin. Pull the cutter blade foreward and then the filter disc straight up. Clean thoroughly as it may be the cause of your problems.
Reassimble. Good luck!

Solution #1 posted on Jun 26, 2008

slappa71
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you need to remove the blades and strip it to the bottom of d/w under blades and check if it is blocked. if ok undo drain pipe and blow to check if blocked. good luckSLAPPER

One of 2 things is wrong.  Either the direction solenoid has failed is not cycling the water between the upper and lower wash blades or the control board that controls it has failed.  You will need a qualified LG technician to diagnose and repair the problem.

When the water stops too soon, it could be the "over flow" is stuck in the downward position, therefore the dishwasher thinks it's going to over flow. Check that out. Otherwise I'm afraid this sounds like the circuit board is shot.


Miss Midget

Your dishwasher probably has rotating blades on the top and bottom that spray water on the dishes.  Clean these off and make sure the holes are not clogged.