Our thermostate model number 9620C gives us this message... Low Battery (Lo-Bat). We repalced the batteries and the same message appears. Our central cooling system does not work.

Thanks for your help

Anthony

It will flash this lo-batt when it has no 24 volt power to the thermostat, check your breaker s. fuse in furnace for transformer, blower door not installed properly (door switch may not be made), bad transformer , good luck. Mike