Arcoaire furnace troubleshooting. Arcoaire furnaces provide all the latest features available on the market for residential heating.
These include two-stage gas valves, induced draft blowers, stainless steel heat exchangers, variable-speed motors, and electronic control panels.
Arcoaire furnace troubleshooting
Some problems that you experience with your Arcoaire furnace can be repaired by you without a trained professional, so it’s always worth taking a look at the issue before making a consultation with one.
It is possible to identify the problem and learn what needs to be done by following some steps.
The Arcoaire furnace does not heat
The igniter is an electrical element responsible for lighting a gas burner. The igniter looks like a little coil of wire that gets really hot and when it does, it glows bright orange to light the gas burner on your furnace.
When you don’t have enough heat in your home, consider testing the igniter or even replacing it. You should also check out other parts such as the flame sensor as well because they are related to each other.
Additionally, the draft inducer motor pulls air into the heat exchanger and exhausts it.
Pressure switches detect changes in pressure and close switches to signal the control board that enough air is flowing to the furnace. The draft inducer motor needs to be replaced if it fails.
Furnace starts and then stops
The draft inducer motor draws in the air into the furnace’s heat exchanger and then pumps it out via the flue.
The pressure switch senses a change in pressure in the line that runs from the draft inducer motor, signaling to the control board of the furnace that everything is working fine.
If there is trouble with the draft inducer motor, for instance, if it cannot close off the pressure switch as it should be able to, then this opens up a problem that prevents ignition.
If this happens, then after only a few minutes, your furnace will shut down. If you suspect that your draft inducer motor needs replacing, then don’t hesitate – do so as soon as possible.
The Furnace blower runs constantly
The control board regulates the power sent to each of the different components in the furnace.
If a relay controlling the blower motor malfunctions while it is closed, it will send continuous voltage to the blower motor, causing the motor to run continuously.
If the control board is at fault, replace it. The wall thermostat has electrical contacts that control the power supply to the furnace.
If a contact controlling the blower motor sticks closed, it will send continuous voltage to the blower motor, causing the motor to run continuously.
To determine if a thermostat is defective you can use a multi-meter and put resistance across its contacts when they’re in a circuit with one another.
However, if you don’t want to get down and dirty with wiring up a home appliance yourself this would be a good time to call in an expert.
The Furnace blower is not working
When the blower motor runs, you should hear the wind blowing but not always see it. If power is reaching the blower but it isn’t running, you will need to test the speed of the motor.
If the motor is running slow, one of two things might be making that happen – either a lack of lubrication or a clog.
Check to see how much room there is around fans and vents in case debris has built up and then either remove any material obstructing them or use a lubricant sparingly to get everything moving smoothly again.
The Furnace is loud or noisy
The blower wheel pushes out air from the furnace through your house’s ducts. A set screw connects the blower wheel to the motor shaft.
If the seta set screw.isn’t tight, the blower wheel will shift and wobble on the motor shaft and make a lot of noise as it turns.
Check to make sure that it is fastened well and then check for any damage. If there is damage, replace it immediately.