Rheem Furnace Repair Guide
What’s Wrong With Your Rheem Furnace?
| 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. |
How to Replace Your Air Filter
- Open, slide, or remove the access panel
- Locate the old filter, which is usually near the cold air intake
- Slide out the old filter
- Insert the new filter by lining up the arrows on the frame
- Replace or close the access panel
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Rheem Furnace Error Codes
| Rheem Error Code | What this means |
|---|---|
| Error Code 10 | There's a one-hour lockout in place. |
| Error Code 11 | The ignition failed. |
| Error Code 12 | Low flame detected. |
| Error Code 13 | The flame was lost. |
| Error Code 14 | There was an unexpected flame. |
| Error Code 20 | There was a twinning fault. |
| Error Code 22 | Problem with high limit. |
| Error Code 26 | Reversal of line and neutral. |
| Error Code 33 | Roll-out switch problem. |
| Error Codes 55 & 57 | Pressure switch issue. |
| Error Codes 58 & 59 | Water or condensation problem. |
| Error Code 61 | Problem with the blower. |
| Error Code 93 | Problem with the control. |
When to call a professional to repair your Rheem furnace
Who Should You Call?
Rheem’s Warranty Coverage
- Prestige series furnaces come with a limited 10-year parts warranty, a lifetime conditional unit replacement warranty, and a limited lifetime heat exchanger warranty.
- Classic series furnaces come with a 10-year conditional parts warranty and a limited 5-year parts warranty. Some models in the line also have a 10-year conditional unit replacement warranty, and a 20-year or limited lifetime heat exchanger warranty.
Rheem Furnace Model Numbers
Discontinued Rheem Furnace Models
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