What should the fan setting be on?
Keeping your fan on AUTO is the most energy-efficient option. The fan only runs when the system is on and not continuously. There is better dehumidification in your home during the summer months. When your fan is set to AUTO, moisture from cold cooling coils can drip and be drained outside.
Should I set my thermostat to auto or on?
If you want to keep the energy bills low, you should set the thermostat to ‘Auto’. However, if you prefer more even distribution of heat inside the house, it’s better that you set the thermostat setting to ‘On’.
Can a blower fan work only when the thermostat is set to fan on?
Fan will work only when thermostat set to fan on. Thank you for the question, Anon, as it’s a common A/C, or heating fan operating problem that needs to be understood: I put it as “The blower fan runs only in the MAN-ON switch but won’t run on AUTO”.
Why does my blower fan run only on auto?
I put it as “The blower fan runs only in the MAN-ON switch but won’t run on AUTO”. This problem can happen in both heating and cooling mode. Rule out bad fan motor or no power to fan.
What should I do if my fan won’t turn on?
Gas burner: you’ll see the burners ignite and may hear the flame. If the burner never turns on then the problem isn’t the with the fan control and you’ll need to take other steps we’ll discuss below. NOW with the burner ON, Watch the round dial on the fan limit control (most limit controls have one but depending on model yours may not).
What happens when a blower motor resistor fails?
The blower motor resistor is the component directly responsible for controlling the blower motor fan speed. If the resistor shorts or fails, it may cause the blower motor to remain stuck on one fan speed.
What is the fan setting on a HVAC system?
The fan setting on your thermostat controls your HVAC’s system blower. The blower helps circulate hot or cold air throughout your home until the temperature on the thermostat is reached. There are two settings on your thermostat to control the fan – auto or on.
How to adjust the speed of a blower?
Blower Speed Adjust Heating Off Delay (S1) • The integrated control module provides a selectable heat off delay function. • The heat off delay period may be set to 90, 120, 150, 180 seconds using the DIP switches or jumper provided on the control module.
How does a blower fan in a furnace work?
The blower fan draws cool air from the occupied space, through return ducts, pushing that air up through the furnace heat exchanger where it is heated, and onwards through supply ducts to supply registers through which warm air is blown into the occupied area.
How does the fan on and off switch work?
On the switch shown, pushing the switch IN puts the fan in MAN or always ON while pulling the white switch OUT restores the fan to AUTO operation. – it will turn on or off according to the supply air temperature and the FAN OFF, FAN ON settings on the control.