Client runs a utility that requires SSL3 to work with Chrome

I have a client whose HVAC system is java based and requires ssl3, and is accessed via a web interface. For the greatest degree of stability the clients has been advised by the HVAC company that they should be using Chrome as their browse. I have advised the client of the security issues that are associated with ssl3, as well as the extremely out of date version of Java it runs, however they are unwilling to take the necessary steps with their HVAC provider to upgrade the system.

When Chrome 40 dropped I added the --ssl-version-min=ssl3 flag to Chrome in order to force it to work and it has worked fine since then until this week. (I also made the necessary changes in Chrome to allow Java to run) SInce the start of the week whenever they attempt to log in they get a "ERR_SSL_PROTOCOL_ERROR" with the details being listed as "Unable to make a secure connection to the server. This may be a problem with the server, or it may be requiring a client authentication certificate that you don't have."

I have double checked the flags, and recreated the icon to no effect, they are running the current build of Chrome  43.0.2357.81.

Any suggestions as to what I can try would be much appreciated, I have them using IE temporarily however the stability issues with that browser and their web interface are extremely apparent.
LVL 10
Tyler BrooksNetwork and Security ConsultantAsked:
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Dave BaldwinFixer of ProblemsCommented:
They will have to upgrade their system.  Because of the security problems with SSLv3, soon no one will be supporting it.  Their choice is basically upgrade or stop using the HVAC control system.

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