blinking cab light

3 blinks is the smoke unit fan. It may have gotten stuck for whatever reason.

Don't worry about it and just run it. Some run time may free up the fan a bit preventing it from reccuring

If the fan motor gets noisy and stops working you'll likely have to replace it.

Fyi.You get 3 resets after the light starts blinking . Then the smoke unit will automatically  shut down until the power is removed from the loco.

Powering it up again will give you another 3 resets and so on.

 Lionel has had an epidemic of smoke fan failures since about 2011 or so. Minor fan issues with my recent purchases give me the impression they still haven't quite figured it out.

Meanwhile my old tmcc steamers puff away and the fans are practically silent.

Ricko,I never gave it a thought about the fan being stuck, at least it is working now i hope it stays that way .

Being from the 2013 Catalog, it's right in the middle of the flaky fan motor band. 

I wasn't sure when i had bought this engine ,so i looked back at my receipts & sure enough John it was bought August 2013 ,you were right on ,so far she is smoking perfect .