I have cleaned the plates with vinegar and hose'd them off.

The lights all come on... Everything on the unit works exept the chlorinator does not chlorinate...

When I set it to chlorinate for say 5 hours - it will finish the cycle and then go into sleep mode. But no chlorine!!

Any ideas, fixes - appreciated.

Thanks.

Perhaps a little more history might be useful to diagnose this problem..
How are you testing the clorine output?
How long have you been using in its current application?