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HomeRepair HelpNordyne Central A/C RepairNordyne Central air conditioner is frequently cycling/short cycling Repair
Nordyne Central air conditioner is frequently cycling/short cycling
If your Nordyne central air conditioner is short cycling, the system turns on and off repeatedly instead of completing a normal cooling cycle. The most likely cause is a clogged air filter, which restricts airflow through the furnace or air handler and can cause the evaporator coil to frost over. Next, check for dirty condenser coils. When the outdoor coils cannot release heat, the compressor can overheat and shut down, causing the AC to cycle too much. A failing wall thermostat or thermostat wiring is another possibility because damaged electrical contacts can send intermittent signals to the condensing unit, furnace, or air handler. A clogged filter remains a possible cause even if the first filter looks clean, and a defective control board can also interrupt power to cooling components. Replace the filter and follow the owner's manual for safe condenser coil cleaning. Enter your Nordyne model number to find the exact replacement air filter, thermostat, or control board for your central air conditioner. Turn off power at the disconnect box and circuit breaker before servicing. Testing or replacing line-voltage parts requires electrical skill, while refrigerant or sealed-system repairs require an EPA 608-certified HVAC technician.
01 - Nordyne Central Air Conditioner Air Filter
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. A clogged air filter will greatly reduce the air flow of the furnace or air handler which can result in the unit short cycling when trying to cool the home.
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Highly Likely
02 - 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 heat pump will become less efficient, causing the unit to work harder to cool down. If the coils are significantly dirty, the heat pump will not be able to remove the heat from the outdoor coil, resulting in the compressor overheating and short cycling. Check the condenser coils to determine if they are dirty. Refer to owner's manual for cleaning instructions.
Common
03 - Nordyne Central Air Conditioner Wall Thermostat
The wall thermostat has electrical contacts that control the power supply to the furnace, air handler and condensing unit. If the contacts in the thermostat fail, the cooling system may turn on intermittently. To determine if the thermostat is defective, use a multimeter to test it for continuity. If the wall thermostat does not show proper continuity, replace it.
Less Common
04 - Nordyne Central Air Conditioner Wifi Thermostat
The WiFi thermostat has electrical contacts that control the power supply to the furnace, air handler and condensing unit. If the contacts in the thermostat fail, the cooling system may run intermittently. To determine if the thermostat is defective, use a multimeter to test it for continuity. If the WiFi thermostat does not show proper continuity, replace it.
Less Common
05 - 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.
Less Common
06 - Nordyne Central Air Conditioner Control Board
The control board regulates the power supply to all of the components of the furnace or air handler. If the control board fails, it might not send voltage to parts of the cooling system, causing a loss of cooling and frequent cycling.
Less Common
Frequently Asked Questions
Why is my Nordyne central air conditioner short cycling?
Can a clogged air filter cause my central air conditioner to stop cooling?
How do I know if my Nordyne thermostat is causing the AC to short cycle?
Should I replace the Nordyne control board if my central air is short cycling?
How do I find the correct Nordyne central air conditioner replacement part?
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