My unit has suddenly become very loud and not working . Is it worth fixing ??

https://atomicfilters.com/pages/whirlpool-whispure-ap51030k-air-purifier-air-cleaner-user-manual


Let us know if this is the same one, and there several models called air purifier.

need to handover it to experts

I have a similar model (WTW4850XQ1) that was making a very loud grinding/screeching noise during the agitation and sometimes the spin cycle. I unplugged and turned it on its front to get underneath and exposed the motor/transmission unit. Took the cover off the belt drive assembly and my drive gear was loose. Simple tightening down of the nut was an easy fix for me. But some times those plastic gears between the drive pulley assembly and transmission crack or the teeth wear down (think it's called the CAM). That is a fairly cheap and easy fix as well ($35). Repair Clinic website has free videos on how to diagnose and fix issues and parts as well. Worth a look.

NOyou with need help on fixing this problem

This is a bad wash pump. Looking at about $175 for just the sump assembly. You could do it yourself, but unit would need to be uninstalled.

Hello- Yep- it's toast. A small seal on motor shaft failed, causing water to destroy bearings. Motor is about 100$. Installation instructions available if you choose that route. Let me know if this info helps- have more if needed.- Thanks - Ed

loud hum is caused by trans . . the mag or recit or cap has failed . . mag is most common for this problem .. **** mag and labor some times is more than micro is worth . look at replacing it .. / if its a small unit like a carry in type then most shop'w will diag for very little .. **** ..

Some kenmore fridges have a 10 year warrantee on the compressor and sealed unit. CHeck with your local Sears store if your's is one of them.

prob not worth repair sounds like horiz sweep circuit. 150 200 to repair.