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After some time of use, you may encounter the situation where the air conditioner shuts off but the fan continues running for hours. So, what are the reasons behind this and how can you fix it? Read on to find out in this Mytour article.
Incorrect Thermostat Settings
This is a problem specific to HVAC (Heating, Ventilation, and Air Conditioning) systems. The ventilation fan, condenser, and evaporator are independent components but work together through thermostat control.
In HVAC systems, the thermostat operates in two modes: ON and auto. When set to ON, the fan will run even if the system is off to ensure proper air circulation.
Fixing this issue is straightforward. Double-check your thermostat settings and switch to the auto mode.
Thermostat Malfunction
This is one of the common causes leading to the air conditioner turning off while the fan continues to run for hours, or the fan and air conditioner turning on by themselves.
Solution: Without deep knowledge about thermostats, you cannot repair it yourself. Contact HVAC repair services for assistance.
Excessively High Outdoor Temperature
If the ambient temperature is too high and the HVAC system operates inefficiently or is undersized, it will prevent the surrounding space from reaching the desired temperature. In this case, the thermostat won't turn off but will continuously adjust the system's operation.
Solution: The fan running while the air conditioner is off is a rare occurrence in air conditioning systems. The cause of this issue is often inadequate or improper maintenance of the cooling space, leading to inefficient system operation.
Contact HVAC cleaning services or technicians to clean or switch to an air conditioning system that fits the space.
Faulty or Short-Circuited Delay Switch
A faulty delay switch or short circuit in the air conditioning system will prevent the temperature control command from reaching the fan. Since the condenser, fan, and evaporator operate independently, encountering this issue will cause the air conditioner to turn off while the fan continues to run.
Solution: Turn off the air conditioner and call a repair technician to check. Both switch malfunctions and short circuits are related to electricity, so improper handling can result in injury.
These are the reasons and solutions for the air conditioner turning off while the fan continues to run that you need to know. Save them for reference and application. Don't forget to follow Mytour for timely updates on the most useful information.
