My whole house powered humidifier stopped working last year. Finally decide
d to do some troubleshooting and noticed that the 24 volt humidifier circui
t is never getting triggered. Using a voltmeter on the board I never get an
ything higher than 11 volts. The Transformer is putting out 24 volts as is
the thermostat. Is this a common problem? Is the solution of new control bo
ard for the furnace? Anything else I should try?