Dataline short or disconnected (missing the 24VDC)
Burned interior ¼ Amp fuse – F1
At power up, the LINK Fail blinks, and if the Dataline is clear (24VDC) for 10 seconds, the LINK fail will stop. If there is a BMS controller on-line that polls the network, the Dataline voltage will be below 20 V – which will not allow the LINK to clear. In this case, after a power outage, the BMS interface shall be disconnected till the LINK fail goes off.