There are no specific web sites that will supply you with this info for everything. All of the companies have proprietary info for the. Out part. If you are looking to find a specific error code for a specific problem I'm sure someone can help,you here..liability insurance for elevators is very high for a reason. Resetting an error code is not going to kill someone but you should have specific elevator experience if you work on them because if someone gets hurt you will have liability on your hands...understanding elevator basics can get you out of many problems and tenacity will get you a bit further. Having the basic fundamentally for elevator,troubleshooting and good friends will get you through....