What does code 5d mean

Hi, a UL error code means a load not balanced. The washer is running a load-balance correction routine. Please allow the washer to continue. If the dial is flashing and the washer has stopped, redistribute the load, close the lid, and press START/PAUSE.

Linda. I know nothing about this washer, but I did get this info from the attached link, you may still have to call a tech.
Put into diagnostics (left, right, right, right, left, right) @ done you see errors, @ spin you run calibration(this will clear codes and reset board). good luck
http://forum.appliancepartspros.com/washer-repair/537059-whirlpool-cabrio-washer-not-completing-spin-cycle.html

Could not find much, try links below.

TwinThin dryer element changed

Whirlpool LTE5243DQ 24 Thin Twin disassembly Google Search

https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwiIkL7k4qrLAhUrmoMKHfDBCroQFggbMAA&url=http%3A%2F%2Fwww.whirlpool.com%2F-%5BLTE5243DQ%5D-1001396%2FLTE5243DQ%2F&usg=AFQjCNEsnkLT2Ac9T6mBdT3q0XplDgWH8w

Whirlpool LTE5243DQ Repair Manual Stack Washer Electric Dryer

There is a little device inside the washer that allows the agitator to spin independent of the drum. If this gets stuck, the washer will try to spin the whole drum instead of just the agitator. This will cause the washer to think the load is too large or out of balance, causing the error code. On some Whirlpools this device is just a washer.

DRIVE MOTOR TACHOMETER

ERROR

If the control is unable to properly detect motor speed, the machine shuts down. If a failure occurs during high-speed spin, the door unlocks after 3 minutes.

How to fix:
1. Verify the shipping system including shipping bolts, spacers and cables are removed.

2. Unplug washer or disconnect power.

3. Check wire harness connections between the drive motor and the Motor Control Unit (MCU), and between the MCU and the Central Control Unit (CCU).

4. Plug in washer or reconnect power.

5. Check the MCU by looking for operations of the drive motor.

6. Check the drive motor for powered rotations.

From:
http://www.appliancehelponline.com/whirlpool.html

F51 error code is a motor rotor position sensor failure or a lower harness problem. You need to check the motor in manual test mode, not automatic test mode. This will check the hall sensors and do a spin test: Be sure the washer is in standby mode (plugged in with all indicators off; or with only the Clothes Clean or Done indicator on). Select any one button (except POWER, START, STOP, and PAUSE/CANCEL) and follow the steps below, using the same button: Press/hold 3 seconds. Release for 3 seconds. Press/hold 3 seconds. Release for 3 seconds. Press/hold 3 seconds.

If this test mode has been entered successfully, all indicators on the console are illuminated for 5 seconds with 88 showing in the Estimated Time Remaining two-digit display. During the 5 second wait time with 88 showing in the display, press the same button once. You should be in manual test mode. If the button is not pressed within 5 seconds, the automatic test mode begins. The Rotor Position Sensor uses Wash, Rinse, and Spin indicators to detect the three hall sensors. Console can have up to two of these indicators on at the same time when the tub is not moving. Open the lid and rotate the basket by hand. The Wash, Rinse, and Spin indicators should toggle on and off according to the direction the tub is being turned.

SPIN TEST: Make sure lid is down. Press and release: 2nd RINSE or EXTRA RINSE. The lid locks and the lid lock indicator turns on. Press and release; SPIN SPEED, WATER LEVEL, or LOAD SIZE. The motor/basket spins at 23 rpm. Press again, motor /basket spins at 530 rpm. Press again, motor/basket spins at 950 rpm. Press again and motor turns off.

From:
http://www.applianceblog.com/mainforums/threads/32879-Whirlpool-Cabrio-UL-F51-Error-Codes

The Ld code is Long Drain. You might have a clogged hose. I had this problem once with mine. We had to empty the washer by hand and turn it on its front. Make sure you unplug it first! There is an elbow that I think was attached to the pump. We popped it off and it was clogged with dog fur (from washing dog bedding). Cleaned it out and put it back on and that took care of it. I found the diagram of the system online and suggest you look for it too - my memory isn't what it used to be - it'll tell you what to look for and where everything is. It could be the pump, too, but hopefully just a clogged hose.

Ideally, you just run the washer without any detergent and it'll rinse out all the soap. Try that first. My Cabrio started doing that all the time, then stopped spinning out all the water. It had a host of problems and I opted to replace the washer. Hopefully the water rinse will fix the problem for you.

C7 code has to do with your main fan. Either its not working due to it being blocked or having gotten wet/damaged/power surged, or your control unit isn't supplying the correct 120V to the fan. Your control has a ceramic fuse that you can test as well.
First, look for 120V to either the left or right pair of wires in the molex plug on the fan. if you have voltage, then the fan is bad. If you dont, its either just a fuse, the board is bad, or the fan is bad causing the fuse to blow. Insert the supplied spare fuse, and power up the unit. If it blows the fuse again, its the fan.

That error means that it is sensing an OVERLOAD. If it does this when it is empty, then there is something causing the error. IT could be something stuck in the drum around the seal or the bearing or it could be the bearings itself