Modern air-conditioning systems are designed for maximum efficiency and are relatively easy to operate. Like all other machines, though. They are also prone to mechanical problems, but if diagnosed soon, they can be prevented from causing further damage. Below are commonly reported problems with air-conditioning units:
It won’t work.
If the AC won’t turn on, check first for the thermostat sensor located behind the control panel, which serves as a gauge to the air temperature in the evaporative coil. An AC won’t run with a thermostat that is not properly set or is defective. Your AC may not also be receiving adequate power. Check for your home circuit breaker and the one outside the unit.
Although there are silent models for heating and air conditioning in Ramsey, Minnesota, like those sold by Liberty Comfort Systems, it is generally normal for most air conditioner models to make noises. What is not normal, however, is when it starts making unusual loud vibrations and rattling noises, or squealing sounds—these may point to problems on the air handler belt, the part which regulates air and directs it through the duct work in non-direct-drive motors. This may happen when the belt connecting the motor to the blower slips.
It blows warm air.
A possible reason for this is that cold air is produced but cannot flow through the ductwork due to dirty filters. Also, ACs work harder to keep up with outside temperatures especially when digits reach three. If the problem is not inside, check if there is any debris sucked into the vents of the outside unit that obstruct airflow. The refrigerant could also be insufficient. It is advised that only licensed technicians should be allowed to replenish coolant on heating and air conditioning in Champlin, Minnesota.
It turns on-and-off frequently.
If the system is oversized relative to your home, it quickly reaches the setting on the thermostat that signals the equipment to cycle off and resumes when the temperature drops below the setting. The thermostat may also be exposed to cool air blown by the air register, which can cause the compressor and fan controls to wear fast.
It leaks refrigerants.
This may be due to worn rubber seals or naturally-forming acid that slowly dissolves the copper tubing. Simply adding refrigerant is not enough. For greater efficiency, make sure that the refrigerant charge matches the manufacturer’s specifications. Make sure that the technician fixes all leaks and tests the repair before he applies the refrigerant.
Studies show HVAC performance problems are lessened through regular air conditioning unit check-up. Cut repair expenses by performing routine care and maintenance on your AC. Also, only rely on knowledgeable technicians to perform checks on your system.
(Source: Common Air Conditioner Problems, energy.gov)