Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 85; Flight Crew Total 11304; Flight Crew Type 11304
Confusion; Distraction; Human-Machine Interface; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown
General None Reported / Taken
Human Factors; Environment - Non Weather Related; Aircraft; Procedure
Upon starting number two engine; the FO miss-configured the pneumatics panel and left [the] left pack in auto.  Could be due to both packs in high instead of auto while at the gate and boarding due to COVID-19. When number two N2 didn't rise to a normal RPM the FO mistakenly closed the cross feed valve instead of the left pack valve. The N2 RPM began to decrease. We realized what happened and did the memory item; the QRC; then the QRH. No engine limitations were exceeded. The subsequent start was normal.
Air carrier Captain reported taking off with the pneumatics panel misconfigured and the left pack in Auto.