I have an LG Tromm washer. I start it up it start

could the upside down F be a lower case t. If so the error code is tE and you have a heating problem.

I'm guessing it has a float switch that shuts the water off when its full, and if it were bad it would not stop filling. Until the float switch tells the valve to close its also is not going to tell the pump to come on.

It is possible that the machine does not start off the cycle because there are errors due to feedback from the inputs. For the program to start up the main program controller must initiate the INLET/MOTOR/DRAIN pump/ valve to open up and allow each function to be driven starting from the flow of water into the drum as also the drain valve to open to exit the water at the point of the program cycle. If this does not happen then the voltage at the valve/motor/pump must be checked or the fault relates to no voltage from the controller. This means the controller is a suspect.

could be a rip in the door boot seal or pump...

I have a (2009 )WM0642HW.The new ones don't have the Forced Water Recirculation Nozzle that's in the top of the door seal. LG quietly (discontinued) that feature. If you do see a WM0642HW with a spray nozzle in top of the door seal in a showroom somewhere, it was a WM0642HW manufactured ( assembled ) a long time ago.Currently produced WM0642HW will not have the Water Recirculation feature installed. There may still be some older version "new" WM0642HW units out there somewhere? But most of them are display models or unavailable ,and with a shorter motor warranty. 7 years instead of current 10 years on new versions of the WM0642HW.But getting back to your question, the washer fills by water entering the cylinder through the back top left side of drum as it flows from the dispenser compartment via a hose.The opening is right behind the cylinder baffels location. It has no fill nozzle at the front gasket edge like some other brands have. My washer did not clean well at all with full loads. Only after i turned the water level switch under the top lid "clockwise" a half turn ,does it now fill up to the bottom of the door rubber seal.My clothing now tumbles in a pool of water instead of a WICK WATER RUB WASH that it was doing previously. It's a 100 times better with the few gallons of extra water inside, BELIEVE ME. What i say is from experience with this exact model.Turn up the water level so it can tumble in some water. TRUST ME ON THIS ONE! You'll have nothing but grief until you've had enough and have the desire to turn it up alittle.Just have it set to fill to the bottom of the door gasket.Everything will be saturated at the start of the wash and not towards the end of the wash segment.

you may have a problem with your pump.water is most likely still in machine.some pumps have filter on them.

I have the same problem - just a small amount of water leaking out from under the machine. I removed the top cover and found one of the water lines rubs on the vent tube and has wore completely through. Should be an easy fix, as the line runs from the #2 spigot on the water inlet to the detergent box - both connections are right on top.

You have a jammed drain pump and will require the pump to be removed and cleaned out.  You will need to call a qualified LG technician to resolve this problem.

I had the same problem. LG said that the liquid bleach needs to be diluted. 50% water, 50% bleach. Straight bleach it too thick.