Weatherwise Heating and Air Conditioning
Here's what you can do if your air conditioner compressor does not start:
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The air conditioning pressures in the Denver area are slightly different than lower elevation ac systems. The pressures are basically the same, but the thinner air will cause the operating pressures of an air conditioner to have a reduction in pressure. R-22 refrigerant is the most common refrigerant currently used in the ac market. Newer systems will use R-410a refrigerant, which has been classified as environmentally safe for the ozone. Troubleshooting each type of refrigerant is different, so these examples of refrigerant pressures will be mostly used for R-22 ac service and repair. Here is a list of the most common causes of failure based on low side suction pressure and high side head pressure.
A dirty condenser coil can cause catastrophic failures to your air conditioning system. The fan motor on the condenser pulls the outdoor ambient air through the metal fins of the condenser to cool off the refrigerant after it has been superheated by the compressor. This process transfers the heat in the superheated refrigerant to the outdoor air. The air conditioning system needs to have the proper refrigerant state, temperature, and pressure to properly function. When the condenser coil is obstructed by dirt, grass, cottonwood, or loose debris the amount of airflow crossing over the condenser coil is restricted. A condenser coil with a severe case of bent fins can cause the same restriction. Bent fins can be straightened with a fin comb. The fins won't look pretty, but better airflow is what is important. The average residential condenser can be cleaned by the homeowner with a garden hose and water, but you need to make sure the high voltage power is disconnected.
When the condenser coil has not been properly maintained, it is sometimes necessary to disassemble the panels of the condenser to gain access to the condenser coil to clean. This often includes disconnecting the electrical and removing the condenser fan to clean the unit from the inside. This also enables the air conditioning repair technician to remove any loose debris at the bottom of the air conditioner. This step is important to make sure loose debris does not get sucked back up into the ac system after it has been cleaned. In severe cases it is necessary to clean the air conditioner condenser coil with outdoor coil cleaner. Many contractors use acidic coil cleaner. This is not recommended to clean the air conditioner as it burns the skin and is harmful to the environment. A biodegradable cleaner is a better and safer choice.
When the air conditioner head pressure gets higher than normal from a restricted condenser coil, several things can happen. The condenser motor begins to run at a higher amperage. This causes the motor to overheat, and eventual failure. The motor windings are rated to run at a specified run load amperage. If the air conditioner is not equipped with a high pressure safety device, and it continues to run with a restricted condenser coil or seized fan motor, the motor windings in the compressor can overheat and cause the compressor to fail. If the fan motor and the compressor are both running hot they can cause the run capacitors to overheat as well. When the condenser coil is restricted and the air conditioning system is running hot, the refrigerant will not be able to be cooled from a superheated vapor to a liquid. With no refrigerant heat transfer made, there will be no cooling.
Cleaning the condenser coil of your air conditioning system can greatly save a homeowner many costly repairs. The outside air conditioner is not equipped with filter protection. In the Denver area Weatherwise can perform a complete tune-up and inspection of your air conditioning system. Visit our coupons page or facebook page for seasonal discounts. Weatherwise is a premier Heating and Air Conditioning Denver Contractor. Our company will provide you with the best service in Denver. We look forward to earning the right to be your first choice for Denver Air Conditioning and Heating repair.
When the blower motor in your furnace runs but blows warm air, there are several failure possibilities. Your split air conditioning system in the Denver area consists of three main pieces of equipment. The blower in your furnace circulates air across the evaporator coil into the home’s living space. The outdoor condenser compresses the refrigerant and pushes the refrigerant indoors to the evaporator coil. The refrigerant is forced through a metering device into the evaporator coil, where the heat in the return air is absorbed directly into the refrigerant. Your air conditioning system doesn’t really make cold air, but rather it removes the heat from your home’s air. Start diagnosing this condition with the following steps.
Check to see if the outdoor unit / condenser is running
- Check high and low voltage power
- Check the compressor
- Check the condenser fan motor
- Check the controls and capacitors
Check AC refrigerant pressures
- Measure the high side pressure
- Measure the low side pressure
Check air conditioning system for leaks if operating pressures are low
- Look for oil spots on condenser coil and piping
- Leak check condenser and evaporator with electronic or other leak detection tools
Taking these steps will get an HVAC technician going in the right direction to troubleshoot your Denver air conditioning repair.
If you need professional air conditioning repair service today call Weatherwise. Our company looks forward to doing business with you.