Cleaned & checked gas furnace. Inspected heat exchanger & flue venting. cleaned burners & flame sensor. Checked voltage & amp draw of motors. Test capacitor. Checked filter. Blower: 4.7A . Inducer: 1.0A . Adjust Gas pressure: 3.6 inches water column. Temperature rise: 52 . Supply: 125 . Return: 73. Found a bad wire connection at humidistat. Corrected and tested operation. OK. Clean and check humidifier, replace pad, checked water flow and drain.