Diagnosed failed gas valve Valve electronics shorted When the furnace reached opening the gas valve in the sequence of operation, the short circuit would cause the 24V power to drop out and reset the control board. This was putting the furnace in an infinite loop of startup, attempt to fire, and shut down. Found water damage inside the furnace due to condensation coming from the intake pipe (occurrs during hot summer months) Got authorization to install a drain coupling on the intake pipe to mitigate this issue. Replaced gas control valve and installed intake drain Set gas pressure to 3.5"wc Cleaned flame sensor 16x25x1 filter is in good shape Furnace operating within factory specifications at this time. Although the humidifier does not function Signed up for silver maintenance