My Comfortmaker Furnace is Blowing Cold Air

It is very important to have proper heat in the winter. During cold evenings, you can sit inside and watch it snow. Perhaps you will simply enjoy a warm evening at home with loved ones.

You may notice your Comfortmaker furnace blowing cold air. You will need to investigate the matter, right away. Here are some things to check before you call a technician.


Go down to your heat system and have someone turn the thermostat up. Is the burner of the unit coming on and getting hot? Does everything seem fine? Is the blower motor running and the burner off? It there is no flame, you may wish to check some things.

Checking for diagnostic codes

Most newer furnaces are electronic in nature. They have a control panel with the ability to diagnose most problems that occur. There are two basic ways to get the diagnostic codes.

Do you still have the manual that comes with the unit? You should have detailed information on your control panel. It should also have a code chart. This will tell you what is causing the problem.

You may also look on the unit. It may be on the blower panel. It may be inside a panel. You should find instructions for retrieving and understanding the diagnostic codes.

In most cases, you will receive flashing lights. They may also have different colors. A slow flashing green light may mean normal conditions. A red one may mean failure. A red light that flashes twice could mean a stuck pressure switch.

When you receive these codes, it can lead you in the right direction. The problem may be simple and easy to fix. On the other hand, you may need professional help.

A burner flame

Your burner may be lighting just fine. For some reason, the air may feel slightly warm. The problem may be simple. You may need to check to see if the blower motor is on the right speed.

In the warm weather, you need high speed to blow cold air. In cold weather, you need slower speeds to move the warm air into your house. It may simply be a matter of lowering the blower speed.

Check with your owner manual. Some models have different methods for changing blower speed. You may not need to remove the blower panel. In some cases you will need to remove the panel and change the position of a wire or two.

There is also a possibility that a limit switch is not properly working. You will receive a trouble code when this happens. If you know what you are doing, you can replace the switch. If not, have someone with training and experience, take care of it for you.


You may notice your Comfortmaker furnace blowing cold air. The first thing to do, is check to see if the burner is lighting. Next check the trouble codes. This may tell you all that you need to know.

In some cases, the burner will light, but the air will not feel very hot. You may need to change the speed on the blower motor. You need high speed for summer and lower speed for winter.

Originally posted 2010-09-13 12:58:21.

Comfortmaker Furnace Diagnostic Codes

Any time that you own an appliance that is supposed to last for years, such as a furnace, it is likely that you will have to make a repair or two.

However, just because repairs are needed, does not mean that you will have to spend a lot of money. There are many repairs that you can make yourself without calling in an expert.

Before you can make any repairs on your own, you will have to be able to diagnose the problem with your furnace. Once you know what the problem is, you will be able to determine if you can fix it yourself or if you need to call in a certified repair person.

If you own a Comfortmaker furnace, this process is relatively simple. You will be able to check out the Comfortmaker furnace diagnostic codes to find out what is wrong with your furnace.

All you have to do is to look for the red blinking LED light. It should be located on the bottom front panel of your furnace.

When you begin to have problems with the furnace working incorrectly, check out the light. Watch to see what kind of code the light is blinking.

For instance, your light might blink 3 slow times and then 2 fast times. This would be a code for what is wrong with your furnace.

Watch the light blink for several minutes until you have determined a pattern. Once you have figured out the pattern, you should write it down.

Some Comfortmaker furnaces have a piece of paper taped to the inside of the door with a list of all the diagnostic codes and what they mean.

If your furnace does not have this paper, then you will need to refer to your Comfortmaker manual to determine what the code is telling you.

Once you have figured out the code and looked up the diagnosis, you should be able to tell whether or not the repair is something that you can tackle on your own.

If the problem seems too difficult, you can always call a certified repair person to come to your home and fix your furnace for you.

Originally posted 2010-07-30 04:53:00.

My Comfortmaker Furnace is Not Lighting

There are many furnaces on the market today that are available for heating one’s home. One model that is top of the line is the Comfortmaker. This excellent furnace is built to make it as convenient as possible for the homeowner to enjoy comfortable living during the winter months. Occasionally one will run into a problem such as the Comfortmaker furnace not lighting.

If this happens, the first thing to be done is to make sure there is sufficient power coming to the furnace. This is done by checking the fuses and the breaker panel. If any switch in the breaker power is on ‘off’ then it needs to be put back to the ‘on’ position. Any bad fuses need to be replaced. Checking the main valve to be sure the gas (or electricity) has not been shut off for some reason should be done before going further.

When the power is confirmed to be on, the code lights should be working. By carefully looking at these codes anything they indicate is wrong should be corrected. Two possible problems, when a furnace will not light, is that either there is a problem with the gas coming in (if it is a gas furnace), or there is something wrong with the pilot light.

A pilot light can become plugged by the accumulation of dirt and moisture. This makes a solid plug which prevents the light to be continuous. Checking this unit to make sure it is free and clear will sometimes be all that is needed to get the furnace running again.

Flame Sensors can become corroded over a time and cause problems. If this needs replacing they are relatively inexpensive and not difficult to install. The owner’s manual will give complete instructions for this operation.

Many people do not think about checking the thermostat. This is the unit that tells the furnace when the temperature is at a level where it needs to turn on or off. In a number of cases, when this was replaced the problem was taken care of.

If there is still a problem, with a Comfortmaker furnace not lighting, after doing all that was shared here, thoroughly cleaning the furnace, reading the owner’s manual carefully and talking to a company technician then it is time to call for outside help. A professional has the equipment to quickly check for the problem and get the furnace working again.

Originally posted 2010-08-26 08:44:22.

Comfortmaker Furnace Reliability

When checking on the Internet you will find that Comfortmaker furnace reliability is above reproach. It receives a ranking of 5, the highest possible, on the rating scales. A review of testimonials shows that the consumer is very satisfied with its long lasting ability.

As with any piece of equipment, there will be repairs needed from time to time. With this furnace, it is usually just a matter of a simple adjustment which can be done by the furnace owner. Most people report having the furnace in place for a number of years without a problem.

United Technologies is the company that manufactures this furnace and they are well known for their expertise in the world of high-tech. Thanks to their extensive research and development facilities, they are able to manufacture top of the line equipment. Their research department is constantly seeking new ways to improve their products and this is passed on to the consumer.

In the manufacturing of the furnace, only the very best materials are used. The finest metals and mechanical parts are researched to provide top of the line in these areas. Each weld and joining of parts is carefully scrutinized every step along the way to make sure there is no possible mechanical or material error.

As the result of their very thorough handling of this unit, from the drawing board to the finished product, one has something that is not only well built but reliable. Many of these furnaces have recorded years of use with little or no minor corrections needed. Their built-in coded system allows for the homeowner to take care of minor repairs personally should any be required.

Thanks to the geothermal energy plan and their coded alert system one has the best possible product on the market to keep one’s home warm during the winter months. Being able to know that it is going to run day and night and keep the temperature at an even degree is a comfort to the homeowner. There is no need to worry about possibly waking up in the middle of the night to a freezing house.

Comfortmaker furnace reliability stands without question in the field of home heating. It has proven itself over the years as being a product that can be depended upon to not only last for a long time but to continue to produce the kind of heat needed for home comfort. One can ask for nothing better from a product of this nature.

Originally posted 2010-08-30 08:53:43.

Comfortmaker Furnace Error Codes

When one has a furnace in their home for heat it is important that it work properly, especially in the winter months. Comfortmaker furnace is unique in that, if something seems to be going wrong they provide Comfortmaker furnace error codes. These codes allow one to know what to do to correct problems that might occur.

This unique system is located at the bottom of the front panel of the furnace. The code is relayed by a red blinking light. The number of blinks and their speed will indicate what part of the furnace is having trouble.

When the code is determined it is simple to check against code listing which is attached. This paper is usually inside the door panel and will relay what the problem is.

Sometimes the repair is very simple, such as a fuse replacement, other times it is more serious and might need the assistance of a certified furnace technician. Having this code system takes the guessing out of trying to determine exactly what the problem is when the furnace is not working properly. It often saves the homeowner a great deal of money in repair bills.

A few examples of these codes are: A slow green means normal operation, steady red means control failure, 2 red means pressure switch stuck closed, 4 red means limit switch open and so forth.
As one can see many of these codes indicate a very simple correction that can be done by the homeowner. This makes it much easier than having to call a technician in every time something simple goes wrong.

Occasionally these codes do not seem to convey the correct message. The light will give a code, yet when one makes the correction indicated it does not seem to correct the problem. This may very well be because something has caused an interruption from the problem and the code light.

When this happens one should check all the connection contacts, and make sure they are clean. Many times a problem of this sort is simply because dirt and grime have accumulated on the contact points. This system of codes has been worked out very carefully and is a safety feature for the homeowner.

Comfortmaker furnace error codes do not occur very often but are an excellent feature on this furnace. They allow the furnace owner to make immediate corrections to a problem. Without the code to indicate what is wrong a small thing could turn into a major repair job. This is a real bonus for the homeowner.

Originally posted 2010-08-12 07:28:41.