Please note, the following ComfortMaker Repair guide is for informational purposes only. Any servicing you attempt is at your own risk.
➤ A complete ComfortMaker furnace repair guide, from how to replace your air filter, to troubleshooting and error codes, model numbers and more!
ComfortMaker At a Glance
ComfortMaker is dedicated to creating products that aim to give you the best in home comfort. Their whole selection of furnaces is quality made so that you can enjoy them total confidence. However, when your ComfortMaker furnace requires attention, this guide will give you the information you need to fix your furnace.
ComfortMaker Furnace Repair Guide
Common ComfortMaker Furnace Problems & Troubleshooting
If you’re ever going to open your furnace to search out for or fix any problem, please remember to completely turn it off before doing so.
| Is your furnace... | The problem might be your... | What's wrong? | How you can fix it: |
|---|---|---|---|
| Not heating? | Circuit Breaker/Fuse | Most likely, either the electrical system providing your furnace’s power has shorted or the power switch has blown. | Try resetting your furnace’s circuit breaker. If it has blown, you will need to replace it. |
| Igniter | The furnace’s igniter might either be cracked or faulty. | Check the part for cracks, if it is then replace the igniter. If it isn’t cracked, use a multimeter to test for continuity. | |
| Cycling irregularly? | Thermostat | Your thermostat might be adjusting incorrectly, causing the furnace to cycle on and off too often. | If your thermostat has an adjustable calibration scale, adjust the heat anticipator. If this does not stabilize the unit, you may have to replace the thermostat. |
| Not blowing hot air? | Blower Motor | Your blower motor may have completely burnt out. If this doesn’t seem to be the case, then the connecting belt may have simply broken. | Test to see if power is reaching the motor. If it does, but isn’t running, the motor has likely failed. If the motor runs but air doesn’t move, the connecting belt has probably broken. You’ll have to replace the belt. |
| Blowing too much air? | Control Board | The control board regulates the amount of voltage that reaches each functioning part. If the relay that controls the blower motor has failed, it will continually send voltage to the motor. | Replace the control board. |
| Thermostat | The contact that controls the blower motor on your thermostat may be stuck closed, causing the blower motor to run continuously. | Use a multimeter to check for continuity. If it appears the thermostat is the issue, replace it. | |
| Leaking water? | Drain Pipe | ||
| Starting and then stopping shortly after? | Flame Sensor | Your furnace’s flame sensor monitors the burner, detecting whether a flame is present. If it is either defective or dirty, it will not be able to detect a flame. | If dirty, clean the sensor using a fine abrasive pad. If faulty, replace the flame sensor. |
One of the simplest tasks that you can carry out to ensure more extended durability with your ComfortMaker furnace is to replace your unit’s air filter regularly. Not only will this promise more efficiency from the blower motor, it will also keep the compressor coils from getting clogged.
How to Replace Your Air Filter
- Open the door panel to gain access to your ComfortMaker furnace. You will find the filter near where the cold air enters the unit, either in the return duct or the entrance to the blower chamber.
- Simply slide out the old air filter and replace it with the new one part.
- Make sure that the new filter is inserted in the right direction.
- Replace the panel or door to your ComfortMaker furnace.
Read more: How to Change a Dirty Furnace Filter – A Guide for Homeowners
ComfortMaker Furnace Error Codes
| Carrier Error Code | What this means | Root cause |
|---|---|---|
| Steady LED flashing | Normal operation | N/A |
| Two LED flashes | Pressure switch stuck closed | Obstruction in pressure tubing. |
| Three LED flashes | Pressure switch stuck open or manual ON/OFF switch in off position | Proper vent size; defective inducer motor; excessive wind; faulty pressure switch; disconnected or obstructed pressure tubing; inadequate combustion air supply; or restricted vent |
| Four LED flashes | The limit switch is open | Loose blower wheel; restricted vent; dirty air filter; defective blower; or excessive wind |
| Five LED flashes | Flame has been sensed out of sequence | The gas valve is either leaking or stuck open |
| Six +1 LED flashes | Soft lockout: maximum trials for ignition has been reached | N/A |
| Six +2 LED flashes | Soft lockout: flame sense was lost while running, a cycling pressure switch, or blocked condensate | N/A |
| Six +3 LED flashes | Soft lockout: the pressure switch was opened during run | N/A |
| Six +4 LED flashes | Soft lockout: the limit switch was opened during run | N/A |
| Seven LED flashes | Soft lockout: the main limit was open for too long (1-hour delay) | N/A |
When to call a professional to repair your ComfortMaker furnace
Some signs that an internal component might be broken are if your ComfortMaker furnace begins to make strange noises, such as banging, gurgling, or whistling; the unit is leaking or dripping; or even if the furnace stops producing heat entirely. Although you might be able to figure out what the problem is, sometimes it’s safer and less expensive to bring in a professional than attempting a fix on your own.
Who Should You Call?
Should you begin to experience issues with your ComfortMaker furnace and have decided that the best course of action is to contact a trained HVAC technician, we can help!
By connecting homeowners with local heating and cooling businesses, we aim to get you the best service possible. Our independent certification program requires companies to meet a number of criteria so that when you’re making your decision, you can do so with absolute confidence.
ComfortMaker’s Warranty Coverage
In addition to whatever warranty coverage that you may have from the company who installed your unit, ComfortMaker offers additional insurance. However, the level of coverage varies from tier to tier.
- For SoftSoundⓇ Deluxe Series units, coverage includes limited lifetime warranty on the heat exchanger, limited 10-year No Hassle Replacement™ warranty, and a limited 10-year warranty on parts.
- For SoftSoundⓇ Series furnaces, the insurance covers a limited lifetime warranty on the heat exchanger, either a 5- or 1-year limited No Hassle Replacement™ warranty, and a limited 10-year warranty on parts.
- For PerformanceⓇ Series products, their coverage includes a limited 20-year warranty on the heat exchanger as well as a limited 10-year warranty on parts.
Protect your ComfortMaker furnace: Register and access your ComfortMaker furnace warranty here
ComfortMaker Furnace Model Numbers
G9MXE
G9MAE
N9MSE
- G9MXE0401410A
- G9MXE0601714A
- G9MXE0801716A
- G9MXE1002116A
- G9MXE1202422A
- G9MAE0601714A
- G9MAE0602120A
- G9MAE0801714A
- G9MAE0802120A
- G9MAE1002122A
- G9MAE1202422A
- N9MSE0401410A
- N9MSE0601410A
- N9MSE0601714A
- N9MSE0801716A
- N9MSE0802120A
- N9MSE1002114A
- N9MSE1002120A
- N9MSE1202420A
- N9MSE1402420A
G9MVE
N9MSB
G9MXT
- G9MVE0401410A
- G9MVE0401712A
- G9MVE0601412A
- G9MVE0601714A
- G9MVE0801716A
- G9MVE0802120A
- G9MVE1002120A
- G9MVE1202422A
- N9MSB0401410B
- N9MSB0401712B
- N9MSB0601412B
- N9MSB0601716B
- N9MSB0801716B
- N9MSB0802120B
- N9MSB1002116B
- N9MSB1002122B
- N9MSB1202422B
- G9MXT0401410A
- G9MXT0601714A
- G9MXT0801716A
- G9MXT1002116A
- G9MXT1202422A
Discontinued ComfortMaker Furnace Models
VS90
- C9MPV075F12*
- C9MPV100J20*
- C9MPV125L20*
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