Rheem Error Code A052: Fan Motor Speed Error
Warning: Your Rheem HVAC system has encountered a fan motor speed error, which may cause it to run inefficiently or not at all. It's safe to operate, but you should address the issue soon.
How to Fix Rheem Code A052
- Check if the fan is running. If not, try resetting the system by turning off the power at the thermostat and turning it back on after 30 seconds.
- Inspect the fan for any signs of dirt or debris. If present, clean the fan carefully following the manufacturer's guidelines.
- If the fan is running but the system is displaying the A052 error, it's best to call a professional HVAC technician.
How to Reset Rheem Code A052
- Turn off the unit using the power button on the front panel.
- Turn off the gas supply valve.
- Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
- Restore power at the breaker, then open the gas valve.
- Turn the unit back on. If the error returns, the underlying issue needs repair.
Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.
What Does Rheem Error Code A052 Mean?
The A052 error on your Rheem HVAC system indicates a problem with the fan motor speed. This could be due to an issue with the control board, the fan motor itself, or the wiring connecting them. The system may run at the wrong speed, or the fan may not run at all. This can lead to reduced comfort and higher energy bills.
Common Causes
- Faulty control board
- Defective fan motor
- Wiring issues between the control board and fan motor
- Clogged or dirty fan
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| Fan is not running | Measure the voltage at the fan motor terminals. Use a multimeter set to DC voltage. | 0 volts (if the system is off) or 120-240 volts (depending on your system) if the system is on. |
| Fan is running but system displays A052 error | Check the continuity between the control board and the fan motor using a multimeter set to continuity mode. | No continuity indicates a wiring issue. |
Applicable Rheem Models
- NCB(gas)
- NPE(electric)
- R801T(gas)
- R92E(electric)
- R92V(gas)
- RGE(gas)
- RH2T(electric)
- RNC(dual_fuel)
- RNE(electric)
- RNG(gas)
- RP16(electric)
- RPB(gas)
- RTGH(gas)
- Rheem Classic(gas)
- Rheem Classic 80 Plus(gas)
- Rheem Classic 80% Gas Furnace(gas)
- Rheem Classic 90 Plus(gas)
- Rheem Classic Plus Series(gas)
- Rheem Classic Series(dual_fuel)
- Rheem Prestige(gas)
- Rheem Prestige 95% Gas Furnace(gas)
- Rheem Prestige Series(gas)
Replacement Parts
| Part | OEM Number | Est. Cost | Where to Buy |
|---|---|---|---|
| Control Board | Rheem 3404975 | — | Find Part |
| Fan Motor | Rheem 3404976 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Rheem model families as A052.
| Code | Description | Severity |
|---|---|---|
| A001 | Ignition Failure | Warning |
| A003 | Abnormal Ignition | Warning |
| A004 | False Flame Detection | Warning |
| A008 | Exhaust Temperature High | Warning |
| A011 | No Flame Detected | Warning |
| A021 | Over-Temperature | Warning |
| A031 | Inlet Thermistor Open/Short | Warning |
| A041 | Outlet Thermistor Open/Short | Warning |
| A043 | Water Level Error | Warning |
| A051 | Fan Motor Abnormality | Warning |