The fan and limit switch in the gas furnace control ________.
A) the temperature at which the fan turns on and the temperature at which the air conditioner turns off
B) the temperature at which the fan turns on and the temperature at which the gas is ignited
C) the temperature at which the fan turns on and the maximum temperature the furnace can reach before power to the gas valve is turned off
Question 2
A weeping relief valve on a hot water boiler may be an indication of:
A) Low return water temperature.
B) A water-logged expansion tank problem.
C) A circulating pump that is running continuously.
D) An extinguished pilot light.