Common HVAC Problems and Solutions: Diagnose And Fix Commercial AC

 

hvac problem solving

Welcome. Welcome to the HVAC Tech Hangout. My name is Ron Walker and I am here to help you with you HVAC learning needs. You'll find almost everything you need right here at your fingertips. HVAC PROBLEM SOLVER. Symptom: I would like simple, foolproof installation instructions for WIFI thermostats. Also includes advanced features, trouble shooting & helpful tips. I would like to set up remote access for a contractor. In general, HVAC problems can range from the simple to the very complex. Most HVAC systems are behind your dash, which means that if you need to get to those parts, you're going to have to remove it. This can be a daunting task, but with a bit of time and patience, you should be able to get through it.4/5(9).


Commonly Reported HVAC Problems, Issues, FAQ's, Trouble-shooting


To diagnose heating, ventilation and air conditioning problems, start with the easy, visible items and work your way to the hidden components. An HVAC consists of a furnace, an air conditioner, ductwork and a fan connected to the ductwork.

The thermostat controls these elements by signaling them to turn on or off based on programmed settings. As part of the ventilation system, hvac problem solving, a filter sits inside the cold air return that removes contaminants from the air before heated or hvac problem solving air is distributed throughout the home.

Begin your diagnosis of the HVAC system by verifying that it has power. Locate the service panel and ensure the circuit breaker has not tripped. The furnace and the air-conditioner each have their own dedicated circuit breaker or fuse. Turn the circuit breaker off for the unit that is malfunctioning. Wait hvac problem solving 10 seconds and switch it back on. If you have fuses instead of circuit breakers, switch the main power off. Remove and replace blown, burnt or broken fuses.

Next check the thermostat for power. Some thermostats receive power via the electrical system, while others contain batteries. Remove and replace batteries for battery-powered thermostats if there is no power at the unit. Switch the thermostat to "heat" mode and set the thermostat 3 to 5 degrees above the room temperature, hvac problem solving. Wait at least 30 seconds before checking for heat at an open register.

If no heat comes out, turn the thermostat off. Confirm that the panel door on the furnace is closed. A switch inside the panel door allows the system to operate when it is fully engaged.

If not engaged, the heater won't come on. Reset the furnace by opening the panel door and turning off the gas or pushing the reset button. Wait five minutes -- or follow the instructions in the unit's manual for reset -- then turn the gas back on. Set the thermostat hvac problem solving "cool" mode. Adjust the thermostat setting 3 to 5 degrees below the room temperature. Locate an open register and check for cool air after waiting for 30 seconds. Reset the air conditioner at the circuit breaker.

If the air conditioner was running, but stopped producing cold air, check the air conditioner for water below the unit. If there is water, dirty coils can hvac problem solving the coils to freeze. Turn the air conditioner off at the thermostat and circuit breaker, let the unit sit for three hours, hvac problem solving clean the coils and restart the unit.

Ensure the fan is on at the thermostat and the registers are open. Newer thermostats have two settings for the fan: "on" and "auto. When set to "auto" the fan kicks on with the heater or air conditioner calls for it, hvac problem solving. Locate the cold air return and remove the filter. Examine the filter for dirt. Cold air return filters must be clean for the system to operate efficiently, hvac problem solving. If your filter is a permanent one that requires cleaning, follow the steps in the owner's manual.

Locate the arrow on one side of the filter that hvac problem solving the direction the air flows. After cleaning, ensure that you put the filter back with the arrow pointing toward the ductwork inside. Replace the disposable filter with a new one. If the registers for the ventilation system do not deliver air, locate the blower motor and check the belt for cracks or breaks.

As a native Californian, artist, journalist and published author, Laurie Brenner began writing professionally in She has written for newspapers, magazines, online publications and sites. Brenner graduated from San Diego's Coleman College. Skip to main content. Home Guides Home Home Improvement. About the Author As a native Californian, artist, journalist and published author, Laurie Brenner began writing professionally in Brenner, Laurie.

Home Guides SF Gate. Note: Depending on which text editor you're pasting into, you might have to add the italics to the site name. Customer Service Newsroom Contacts, hvac problem solving.

 

The 5 Most Common Commercial HVAC Problems

 

hvac problem solving

 

Listed below, are commonly reported HVAC (Heating, Ventilation, and Air Conditioning) problems. By clicking on a problem, it will take you to a page discussing the problem along with possible causes and remedies. We also have a webpage dedicated to Frequently Asked HVAC Questions. In general, HVAC problems can range from the simple to the very complex. Most HVAC systems are behind your dash, which means that if you need to get to those parts, you're going to have to remove it. This can be a daunting task, but with a bit of time and patience, you should be able to get through it.4/5(9). HVAC PROBLEM SOLVER. Symptom: I would like simple, foolproof installation instructions for WIFI thermostats. Also includes advanced features, trouble shooting & helpful tips. I would like to set up remote access for a contractor.