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HomeRepair HelpMaytag Central A/C RepairMaytag Central air conditioner - home's humidity is too high Repair
Maytag Central air conditioner - home's humidity is too high
When a Maytag central air conditioner is not removing humidity, the most likely cause is a clogged air filter. Restricted airflow can make the evaporator coil frost over, preventing the system from dehumidifying your home. Replace the Maytag air filter as directed, especially if you have pets or dusty conditions. A clogged air filter on the furnace or air handler can cause the same problem. Next, check for dirty condenser coils. When the condenser coil cannot release heat efficiently, the compressor may run continuously while the air conditioner still leaves the house humid. If your house is humid with AC running, a faulty temperature control thermostat is another likely cause. A thermostat that shuts the system off too soon may not run the compressor long enough to remove moisture. Less common causes include a defective thermistor or control board. Use your model number to find the exact replacement air filter, thermostat, thermistor, or control board for your Maytag central air conditioner. Disconnect power before servicing, and have a qualified HVAC technician handle 240V electrical repairs or any sealed-system work involving refrigerant, which requires EPA 608 certification.
01 - Maytag Central Air Conditioner Air Filter
If the air filter is clogged, air cannot flow properly through the air conditioner. This greatly reduces the cooling capacity of the air conditioner. In addition, if the air filter is clogged, the evaporator coils will frost over. Check and replace the air filter at least twice a year, more often in dusty/dirty environments or if there is a pet in the home.
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Highly Likely
02 - Clogged Air Filter
If the air filter is clogged, air cannot flow properly through the home's venting system. This greatly reduces the cooling capacity of the air conditioner. In addition, if the air filter is clogged, the evaporator coils will frost over and not be able to remove moisture from the air. The air filter should be checked and replaced at least twice a year, more often in dusty/dirty environments. Refer to owner's manual for guidance.
Highly Likely
03 - Condenser Coils are Dirty
The condenser coils dissipate the heat as the refrigerant passes through the coils. If the condenser coils are dirty, they won’t be able to dissipate the heat as effectively. As debris builds up on the coils, the air conditioner will become less efficient, causing the air conditioner to work harder to cool down. If the coils are significantly dirty, the air conditioner will not be able to remove the moisture from the air and maintain the proper temperature, resulting in the compressor running continuously in an attempt to cool the room. Check the condenser coils to determine if they are dirty. Refer to owner's manual for cleaning instructions.
Highly Likely
04 - Maytag Central Air Conditioner Temperature Control Thermostat
The temperature control thermostat is a sensor which monitors the temperature of the air and activates a switch to provide power to the fan and compressor when the air temperature drops below a set point. If the thermostat isn’t working properly, the air conditioner may not stay running long enough to remove the moisture in the air and cool properly. To determine if the temperature control thermostat is defective, use a multimeter to test it for continuity. If the thermostat does not have continuity, or is shutting off too soon, replace it. (Note: Some thermostats may also control a heater and, as a result, will have three...
Common
05 - Maytag Central Air Conditioner Thermistor
The thermistor is a sensor connected to the control board that detects the temperature of the air. The resistance value of the thermistor changes in conjunction with the air temperature. If the air temperature rises, the resistance value will decrease. To determine if the thermistor is at fault, use a multimeter to test it for continuity. If the thermistor does not have continuity, or if the resistance of the thermistor does not change with a change in temperature, replace the thermistor. (To find specific temperature and resistance values, try checking your user’s manual.)
Less Common
06 - Maytag Central Air Conditioner Control Board
The main control board regulates the voltage to the compressor and the fan motor. If the control board fails, some components will not function properly or will not work at all. Control boards are often misdiagnosed; make sure to check more commonly defective parts first before replacing the control board.
Less Common
Frequently Asked Questions
Why is my central air conditioner not removing humidity from the house?
Can a clogged air filter cause my AC to stop cooling and make the evaporator coil freeze?
How do I test the Maytag central air conditioner thermostat or thermistor?
Why does my AC keep running but the house is still humid or not cooling properly?
How do I find the correct Maytag central air conditioner replacement part?
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