Spyder BACnet Programmable VAV Controller: Spyder PVB6436AS with Date Code 1420. It was reported and verified that some PVB6436AS Spyder BACnet programmable VAV controllers with date code 1420 have an incorrectly calibrated air pressure sensor, resulting in the flow reading not functioning. The issue cannot be resolved by field re-calibration or firmware refresh. Honeywell has […]