TUNZE 3155-Yellow LED on/Green LED Flashes Quickly?

[BuckeyeFrags26]

Power unit on and it starts up fine then the yellow pump indicator LED turns on and starts the pump. Then a few seconds later I see the Green LED start a quick Blinking sequence and then stop.

Anyone Know what that means?

3155 ATO System

 

[rvitko]

Hi, I replied to your email, my best guess is that their is a break in the optic sensor wire. The new unit you have the optic sensor plugs in, you could check that the plug is not loose but besides that I suggest we go with exchanging it as per my email reply.