Arrived at location 1/17/22 - Found bad timer allowing steam into cooking chamber without being in cook mode. Will order and return. Returned on 1/20/22 - Shut off power at breaker, had to break apart old timer to remove, installed new timer, closed up and turned breaker on, let unit fill and heat, unit started steaming before ready light came on, found operating thermostat turned up all the way, adjusted thermostat, unit stopped steaming and ready light came on, turned on timer, cooking light came on and unit producing steam, confirmed unit working correctly at this time.