Troubleshooting
Please check our list below to troubleshoot any issues you may be experiencing with your cooling or heating unit.
Air Ducts/Balancing/Zoning
Your heating and air conditioning unit will not warm or cool your home properly without balance in the HVAC air flow. If your home has uneven temperatures from room to room, you need to balance the air flow in your HVAC system.
Common Problems
- Leaking Air Ducts – In Seams
- Air Flow Loss in Registers in Home
- Home lacks even air flow – even temperature
- Air Ducts/Supply & Returns not Plentiful Enough
- Poor Sizing of Original Equipment
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Air Filtration Systems
Air filtration systems work to capture pollutants and contaminants in the air.
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Air Purification UV Light
Uses ultraviolet light to kill Microorganisms (mold, mildew, bacteria, and viruses).
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Blocked Air Filter
Protects the furnace and cleans the air circulating through the house.
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Blower Fan
Used to circulate conditioned air (whether heated or cooled)
from a furnace or cooling system throughout the home.
What can cause this to fail?
- Age of Part
- Dirt/Debris
- Electrical Short/Surge
- Vibration – out of balance
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Blower Motor
Breaker / Fuses
Measures and monitors the current flow across a circuit. If the current increases
too high, it will trip a switch, severing the flow of electricity past it.
What can cause this to fail?
- Age of Part
- Power Surge
- Lightning Strikes
- Motor Over current draw
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Burners / Heat Assembly
Gas ignited by ignition system. This hot, combusted gas rises past a heat
exchanger and out through a vent that leads to the outside of the house.
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Burnt/Loose Wiring Heating
Can cause system to malfunction including a risk of fire.
What can cause this to fail?
- Flame roll out – burned wiring
- Short – seared connections
- Power Surge Damaged Wiring
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Capacitor / Heating
Capacitors store electricity. A fully charged capacitor allows current to flow at its maximum level as it releases its charge.
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Circuit Board
Circuit boards organize and control the sequence of operations in the furnace.
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Compressor
Compresses low pressure refrigerant gas into a high pressure, high temperature gas.
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Condenser Coil Leak
Tubes to carry the refrigerant through so it can be cooled. Must be keep free of damage and clean for them to work well.
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Condensor / Fan Motor
Powers the condenser fan to blow air across the coil.
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Condenser Fan
Blows outdoor air across the hot condenser coil, cooling the hot Freon gas.
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Contactor
Sends the correct voltage to power the compressor.
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Damper Motor
A damper controls the draft in an HVAC system. Dampers open and close based on the portion of the HVAC system in use, and they control air flow and venting of the system.
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Defrost Control Heat Pump
Controls the defrost cycles on the heat pump.
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Electronic Ignition Control
Control the process of the ignition system. Continuously monitor the furnace’s
operation and the operation of the integrated control module itself.
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Evaporator Air Restriction
Absorbs the air’s heat and sends it back into the house as cold air via a series
of air ducts. Constricted air flow to coil prevents proper cooling.
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Expansion Valve
Valve that controls flow of refrigerant into the compressor.
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Fan & Limit Control
This is a Safety switch. Shuts furnace down in the event of a overheat situation.
Determines when the blower fan comes on and how long it should stay on.
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Fan Belt
Older furnaces have blowers than are driven
by belts instead of directly by a motor.
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Gas Valve
Responsible for supplying the furnace’s burners with flammable gas once they’ve heated up enough to allow for combustion, and it also shuts off the supply of gas when the burners go out to avoid a fire hazard.
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Heat Exchanger (Carbon Monoxide Danger)
Designed for the transfer of heat from your return air to your supply air. When your heat exchanger has holes, cracks, or rusted out sections, the air passing over it can actually spread those dangerous CO gases into your home!
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Ignitor Flame Sensor
The wire possess enough electrical resistance so that when a current passes through it, it generates a large amount of heat. This sudden spark of heat is used to light the main burner.
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Indoor Cooling Coil Leak
Absorbs the air’s heat and sends it back into the house as cold air via a series of air ducts.
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Inducer Fan Motor
The draft inducer blower’s purpose is to move air and gases out of the furnace and up through the chimney.
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Liquid Suction Drier
Captures contaminants in the refrigerant, preventing them from reaching the condensing unit’s compressor.
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Pilot Light
When activated by an electric current, the surface of the glow coil heats up and ignites the burners in the furnace.
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Refrigerant Balancing
Refrigerant is what removes heat from air and cools/heats. It has to be properly charged.
Why is this needed?
- Over charged too much in system
- Under-charged – not enough (Leaks)
- Leaks in System
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Relay
A simple electromechanical switch which uses a small current to turn a much larger current on and off.
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Safety Pressure Switch
When something fails or pressures reach an unacceptable high level or point, the switch will shut off the electrical power in the circuit shutting the furnace down.
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Start Kit for Compressor
Helps start the compressor.
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Suction Line Accumulator
Prevents compressor damage from a sudden surge of liquid refrigerant and oil that could enter the compressor from the suction line.
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Surge Protection FAQ
Thermocouple
An important safety device. If the gas does not ignite and
continues to flow, it can cause an explosion when it builds up.
A thermocouple turns off the gas if the pilot is off.
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Thermostat
Controls the heating and air-conditioning systems in your house. A programmable thermostat provides an effective, economical and easy way to save energy
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Transformer
A furnace transformer reduces your house voltage for use inside your furnace.
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Water Leak
>Water leaks can be from multiple reasons including holes in the drain pan that is located under the evaporator, a plugged condensation drain line and an evaporator coil that is frozen up.
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