A lot of the time, the reason why it fails is simply because the feed bucket is filled too much to heat it up to a high enough temperature in the 4 hours, but the error codes give no indication of this unless you go into a service menu which the code is not available to the owners of the machines. If you could get into the service menu, you could find out what the problem is, fix it, and have it successfully complete a cycle, if you had access to the settings, you might be able to set it to try for a 5 hour cleaning cycle to give it more time to heat itself up to clean itself. It's not about trying to bypass a safety lockout, it's about being able to troubleshoot the issue and fix it.