UC-21 code and the service manual only goes to UC-20 Model sharp MX-2300

Try this,

Hit Pound, star, C, Star
enter 14, then touch start
execute on the screen
the machine will reboot and the code should go away.

If it's a one-off code this should take care of it. If the problem persists you might need some maintenance.

If you are in Houston we'd be happy to help. Skelton Business Equipment Houston Copiers

LG-42LB5D-UC Service Manual and Repair Guide
LG 42LB5D UC Service Manual and Repair Guide Download Manuals Technical

Official factory service, repair and workshop manual. This service and repair manual is used by the Certified LG Technicians. It will help you to troubleshoot and repair your television!

Please note this is the OFFICIAL service manual in PDF format, no scanned in or bootlegged copy. This manual is made in the highest resolution, so when you print the pages you need it is all in great quality.

You may download a copy of the manual at http://www.radioshack.com/graphics/uc/rsk/Support/ProductManuals/2101926_PM_EN.pdf

Here is the pdf manual:
http://www.radioshack.com/graphics/uc/rsk/Support/ProductManuals/2101926_PM_EN.pdf
http://www.radioshack.com/graphics/uc/rsk/Support/ProductManuals/2101926_PM_EN.pdf

Since you are receive UC error code, Please call the after-sales service.
Source: Samsung CS Portal

I don't have a direct answer, but here is the contact info you need for customer service:

Schlage Lock Company
Customer Service Department
2119 E Kansas City Rd
Olathe, KS 66061
United States Customer Support
Warranty & Technical Information: 1.888.805.9837

http://consumer.schlage.com/Service-Support/Pages/ContactUs.aspx
Schlage FAQ: http://consumer.schlage.com/Service-Support/Pages/InstallationTroubleshooting.aspx
http://consumer.schlage.com/Service-Support/Pages/FAQ.aspx

Instructions & Manuals: http://consumer.schlage.com/Service-Support/Pages/InstructionandManuals.aspx

BE-365 installation & programming PDF: http://consumer.schlage.com/Project%20Documents/P515-858.pdf

Here are the codes.

SHARP.... 0509 0913 0907 0603 0002
....... 0502 0224 0228 0202 0111 0813

You can get the manual here on link below.

http://rsk.imageg.net/graphics/uc/rsk/Support/ProductManuals/1500115_AD_EN.pdf

HI. this uc code represents a no spin state of the unit. this is caused by a faulty Motor control assembly. you will need to replace the Motor control assembly. this will fix this issue and, restore the normal actions of the unit.

This Motor control assembly will cost about $219.00.

This is my failure resolution with DC/UC error codes a common problem with this model;

I just did a repair on my FAV6800AAW by lubricating the needle bearings in the clutch pulley hub, the tub displacement sensor checked OK per the service manual check. I was getting dc/uc errors in the spin cycle, washer was purchased in 7/05. I have basic mechanical skills and used a socket wrench to remove clutch pulley hub, just follow the service manual removal steps to remove clutch pulley hub. Pull the plastic cover off the clutch pulley hub and inspect the spring, clean/lube needle bearings and the clutch hub coupler that drives spinner shaft. I used WD40 I may need to re-lube down the road with a good light grease. It took a few tries for me to get the clutch pulley hub to stay on after re-install and power up, getting the clutch pulley seated properly is the trick. I did not remove the washer tub for this fix, I believe I saw a posting where someone did. I just leaned the washer back to get a better reach angle, it is a tight work area. I did not want to junk 3.5 yr old $1k machine with out trying a fix. If you want to work on this model get the service manual, I found it online and I believe you can order it in PDF format from Maytag. Good luck!

I just went thru my 10th load of a mix of light, medium and heavy loads and all work fine no unbalance errors (DC/UC). Doesn’t fix the tangle problem :) Prior to this fix I could only run the washer with no clothes in it to complete a cycle with no dc/uc error codes.

I found a Service repair manual on this site search for this; FAV6800 Manual

I just did a repair on my FAV6800AAW by lubricating the needle bearings in the clutch pulley hub, the tub displacement sensor checked OK per the service manual check. I was getting dc/uc errors, washer was purchased in 7/05. I have basic mechanical skills and used a socket wrench to remove clutch pulley hub, just follow the service manual removal steps to remove clutch pulley hub. Pull the plastic cover off the clutch pulley hub and inspect the spring, clean/lube needle bearings and the clutch hub coupler that drives spinner shaft. I used WD40 I may need to re-lube down the road with a good light grease. It took a few tries for me to get the clutch pulley hub to stay on after re-install and power up, getting the clutch pulley seated properly is the trick. I did not remove the washer tub for this fix, I believe I saw a posting where someone did. I just leaned the washer back to get a better reach angle, it is a tight work area. I did not want to junk 3.5 yr old $1k machine with out trying a fix. If you want to work on this model get the service manual, I found it online and I believe you can order it in PDF format from Maytag. Good luck!

I just went thru my 10th load of a mix of light, medium heavy loads and all work fine no unbalance errors (DC/UC). Doesn’t fix the tangle problem :) Prior to this fix I could only run the washer with no clothes in it to complete a cycle with no dc/uc error codes.