Have a switchlinc installed in the basement and it works 100 % with the ISY however manual it either works, is intermittent or does not work at all. Usually once changed via the ISY causes it to work better but only for a short time, any advice ?

I would try a factory reset on the device,  other than that it might be on the way out.

Is it the paddle that does not work?   That is all within the SwitchLinc unless it is not directly driving a load (Red wire capped).

How old is the SwitchLinc?

The earlier hardware versions had a tact switch issue.

The paddle would activate the switch and it would click but it didn't make electrical contact.

Symptoms where similar to what you are seeing. Paddle works intermittently or stops completely working. Though a controller had complete control.

Smarthome actually gave the SwitchLincs in the possible problem manufacturing date range. A seven yeay warranty.

 

You may want to try a power cycle reset on them.

Sorry for the delay, recently did a power cycle and it seems to be working now.  Thanks for all the info