BM2000 Blower not running.

[VRan]

Hello!
I have a BM 2000 and 3 zones and an expansion card. My problem is that the blower does not turn on, the rest of the controls seem to be working properly turning the burner on, opening the zones, status led blinking and I noticed the Y led does not turn on. Any help would be appreciated.
Thank you,

[coeddie11]

If the Y LED isn’t lighting and the blower won’t start, I’d check for 24V between Y and C at the BM2000 and verify the thermostat is actually calling for cooling, as well as confirm the equipment wiring and any safety switches aren’t interrupting the Y signal. paper io