On a Rheem High Boy furnace with the model number RGAC-125A, the relay is typically located in the control panel or near the blower assembly. To access it, you usually need to remove the front access panel of the furnace. Always ensure the power is turned off before attempting to inspect or service any components. If you're unsure, consulting the furnace's manual or a professional technician is advisable.
A fan or cooler relay is used in electrical furnace to change the blower speed to the blank speed for cooling
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A fan cooler relay in an electric furnace controls the blower motor's speed to optimize cooling efficiency. When the furnace reaches a certain temperature, the relay activates, adjusting the power supplied to the blower motor, which can either increase or decrease its speed. This modulation allows for better airflow and temperature management, ensuring that the furnace cools down effectively without overheating. By using the relay, the system can respond dynamically to temperature changes, enhancing overall performance and safety.
The furnace blower may not turn off due to a faulty thermostat, a malfunctioning limit switch, or a problem with the fan relay. It is important to have a professional HVAC technician inspect and repair the issue to ensure proper functioning of the furnace.
In an electric furnace, a fan relay typically changes the blower speed to a lower setting for cooling. This reduced speed helps to circulate air more gently, allowing for better heat dissipation and preventing overheating of the furnace components. By operating at a lower speed, the blower can provide effective cooling while maintaining comfort in the surrounding space.
Where is the blower motor relay at.
If the furnace itself is in the attic, the humming is likely caused by electrical components in the furnace--most likely, the blower motor, or else a transformer or relay coil. If the furnace is located elsewhere, the humming may be caused by a damper motor or possibly the air movement itself vibrating a damper or some sheet metal.The HVAC Veteran
It is the relay for the heating and cooling fan
I think the blower motor relay is internal to the blower motor resistor which is located under the passenger side dash.
Not sure about the relay, but there is a blower resistor assembly located on the heater case to the right of the blower motor.
where the relay for rear blower in Nissan quest 1997
Because it is connected (by a few wires if I'm not mistaken) to the blower motor.