Rheem Air Conditioner Fan Not Working

Rheem Air Conditioner Fan Not Working. More on what to do about your Rheem Air Conditioner fan if it’s not working.

We covered everything you need to check if your Rheem air conditioner fan isn’t blowing air in our previous article.

This one is about what to do when the compressor outside turns on, but the condenser fan inside the house doesn’t spin.

The room’s temperature is higher than what is set on the thermostat, and you have checked that it is on.

Move next to checking whether or not you can hear an internal fan spinning, as an internal sensor detects air warming up inside, vacuuming it through the filters into your home so that you can feel cool again.

Rheem Air Conditioner Fan Not Working

rheem air conditioner fan not working guide

The following are some problems with Rheem air conditioner fans when they don’t work.

Issue With Selector Switch

The selector switch deals with the supply of power to the fan. To check if it is faulty, try making selections on the air conditioning control panel.

If any section of the fan runs sooner than, or later than another whenever you switch it on, then this shows that the selector switch is likely at fault and should be replaced.

It should also be replaced if there are bright sparks or smoke observed in or around the selector switch.

Problem With Rotary Switch

Turn the rotary switch to activate the fan motor. If a circuit breaker is nearby, turn it off. Over time, electrical contacts inside the switch can develop pitting that prevents contact with their counterpart at the motor.

To test if the rotary switch is conducting electricity, use your multimeter according to your air conditioner’s wiring diagram.

If you don’t notice continuity, replace the switch before reattaching power to your air-conditioning unit.

Cause Of Thermistor

In addition to the thermistor, the control board has a temperature sensor that detects the temperature of the air.

This means that if the thermistor in the computer is faulty, then the cooling fans won’t work as they should.

In order to determine whether the thermistor is at fault, you should use a multimeter to test its continuity. The thermistor should be replaced if it does not have continuity.

Error In Blower Motor

A blower motor may have burnt out or become worn out. The first thing to check is whether the fan blades are free to spin. If the fan blades don’t spin, replace the blower motor.

Next, make sure that power is getting to the blowers by checking for “black boxes” that exist on various lines into your appliance.

If there are no black boxes found or all have been checked and replaced, but you still aren’t receiving any airflow through your home’s vents, then there is no alternative but to buy a new blower motor.

Defective Thermostat

The thermostat is responsible for monitoring and regulating the temperature of the air.

When temperatures rise above a set point, the thermostat can be programmed to switch on and emit power to activate the fan or compressor, depending on what setting it’s been instructed to.

You may not be able to adjust the temperature of your home if it malfunctions or breaks beyond repair. If your thermostat is malfunctioning or has stopped working, check continuity with a multimeter.

You’ve got a defective thermostat if you can’t consistently switch between cool and off settings. As soon as possible, replace it before any further damage occurs.

Belt Broken

Most newer AC units do not use a belt-driven system. However, older belts can be a source of major problems in these kinds of systems.

As air conditioning belts age, they become more prone to fraying and other forms of damage.

If your AC belt has failed, you may experience noises coming from within the fan compartment, like strange clanking when in operation or severely uneven rotation.

Most commonly, an AC belt will prevent an entire unit from operating as intended and need to be replaced immediately to fix the problem caused by its failure.

Faulty Relay Board

Many components of the air conditioner receive voltage from the relay board, including the fan motor. The fan might not run properly if the relay board isn’t functioning correctly.

Before replacing the relay board, check with a qualified automobile technician to see if there is something else that could be causing this problem like a malfunctioning fan motor capacitor or perhaps even a defective fan belt.

Replace the relay board only if you are certain that all of the other components are working.

Defective Main Control Board

Power is sent to all components of the air conditioner by the main control board. In the event of a malfunctioning control board, the fan motor may not function.

Make sure to check other components that are often misdiagnosed, including a faulty fan motor, before replacing the main control board.

If you’re certain that all other parts of the AC unit are working correctly, replace the mainboard.

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