Condensing Unit Frozen Wont Turn Off - What you can expect to learn from Condensing Unit Frozen won’t Turn Off article: this article is an answer to a question taken from our email by a visitor to High Performance HVAC. We often use the questions we get in the email as a guide to writing articles. The topic is a condensing unit that will not turn off, and it is freezing up. From my experience in the field and using my HVAC knowledge, I offer the readers a list of what could cause this problem. We hope it helps you. What’s the possible problem with a frozen air conditioner condenser that won’t turn off except with the breaker? (more…)
Warning!! blowers can cause injury if you do not turn the power off! Additionally, blowers that are belt-driven can be harmful to loose clothing and fingers. Be very cautious when working around moving parts such as blowers.
Air Handler Blower Motor - All air handling units have a blower located inside the air handler cabinet. The air handler blower motor has a motor that drives it. Some air handling unit blowers are direct drive and some are belt driven.
Many light commercial and residential blowers are direct drive blower motors by the motor’s shaft while many commercial air handling units are belt driven by the blower motor and some sheaves attached to the blower motor shaft and the shaft attached to the blower wheel.
Some sheaves are adjustable and some are not. If the belt is slipping always change the belt first before adjusting the sheave. Adjusting the sheave can cause the unit to produce more or less than designed airflow. Sheaves are typically set by Testing and Balancing HVAC Technicians. (more…)
HVAC and Electrical Fundamentals - Electricity is usually produced by a generator at a power station and delivered to sub-stations for distribution to homes and businesses. Electricity can also be produced using chemicals like the chemical processes produced in batteries. There is also static electricity which is generally produced from friction and is oftentimes uncontrollable like lightning. (more…)
Honeywell Oil Burner Ignition Control | HVAC Heating - This Honeywell oil burner ignition control controls the oil burner sequence of operation. On a call for heat from the thermostat, the oil burner ignition control starts the burner blower. this mechanically interlinked with the oil pump.
The blower blows air into the combustion chamber and the oil pump pumps oil to the burner’s nozzle. The step-up transformer is energized and applies a very high voltage spark to the burner’s ignitor. When the flame is detected it is immediately detected by a cad cell eye which recognizes the light produced by the flame inside the combustion chamber. (more…)
HVAC Tip - HVAC Preventive Maintenance: Just like a vehicle needs preventive maintenance, HVAC systems need a regular maintenance schedule. Having maintenance performed on your air conditioning and heating systems now can help you avoid costly repairs in the future. Air Conditioning and heating preventive maintenance also pays for itself by making the unit more efficient, safe, and reliable. Often, a technician can spot a ten dollar part that needs replacing now where if it is let go and not replaced, can cost you hundreds of dollars more in the future. The old phrase is true, "pay me a little now, or a lot later." I see it every day. Basic maintenance on condensers and air handling units will save you money in the long run. If your local heating and cooling company offers maintenance agreements look into getting one for your home or business. Typically, companies offering maintenance agreements waive overtime charges for after hours or emergency calls and offer you reduced prices on parts. That is in addition to performing preventive maintenance twice annually.
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Air Handler Blower Motor - All air handling units have a blower located inside the air handler cabinet. The air handler blower motor has a motor that drives it. Some air handling unit blowers are direct drive and some are belt driven.
Honeywell Oil Burner Ignition Control | HVAC Heating - This Honeywell 