Honeywell burner control fault codes are a series of alphanumeric codes that are displayed on the burner control panel or keyboard display module (KDM) to indicate a problem with the burner system. The specific codes will vary depending on the model of burner control, but some common codes include:
- 101: High limit switch
- 102: Low limit switch
- 103: Flame rollout switch
- 104: Ignition failure
- 105: Gas valve open
- 106: Gas valve closed
- 107: Fan motor failure
- 108: Draft inducer motor failure
- 109: Pressure switch open
- 110: Pressure switch closed
- 17: Main flame failure during RUN
- 19: Main flame failure during IGNITION
- 28: Pilot flame failure
If you see one of these codes on your burner control panel, it is important to have the problem diagnosed and repaired by a qualified technician. Do not attempt to operate the burner with a fault code present, as this could pose a safety hazard.
Here are some additional Honeywell burner control fault codes that you may encounter:
Flt 1: No Purge Card
Flt 2: AC Frequency/Noise
Flt 3: AC Line Dropout
Flt 4: AC Frequency
Flt 5: Low Line Voltage
Flt 6: Purge Card Error
Flt 7: Flame Amplifier
Flt 8: Flame Amp/Shutter
Flt 9: Flame Detected
Flt 10: PreIgn. Interlock
Flt 11: Running Interlock On
Flt 12: Lockout Interlock On
Flt 13: Airflow Switch On
Flt 14: High Fire Switch
Flt 15: Flame Detected
Flt 16: Flame-Out Timer
Flt 17: Main Flame Failure
Flt 18: Flame Detected
Flt 19: Main Flame Ignition
Flt 20: Low Fire Switch Off
Flt 21: Running Interlock
Flt 22: Lockout Interlock
Flt 23: Airflow Switch
Flt 24: Call Service
Flt 25: Call Service
Flt 26: Manual-Open Sw. Off
Flt 27: Start Switch On
Flt 28: Pilot Flame Failure
Flt 29: Lockout Interlock
Flt 30: Running Interlock
Flt 31: Low Fire Switch Off
Flt 32: Airflow Switch
Flt 33: PreIgn. Interlock
Flt 34: Oper. Control On
Flt 35: through Flt 40: Call Service
Flt 41: Main Valve On
Flt 42: Pilot Valve On
Flt 43: Ignition On
Flt 44: Pilot Valve 2 On
Flt 45: Low Fire Switch Off
Flt 46: Flame Amp Type
Flt 47: Jumpers Changed
Flt 48: Delayed MV On
Flt 49: Manual-Open Sw. On
Flt 50: Jumpers WrongFlt
Flt 51: Flame Too Strong
Flt 51: Flame Too Strong
Flt 52: Call Service
Flt 53: Lockout Switch
Flt 54: Comb. Pressure
Flt 55: Purge Fan Sw On
Flt 56: Block Intake
Flt 57: Purge Fan Sw Off
Flt 58: – Flt 66 Call Service
Flt 67: AC Phase
Flt 68: Preignition ILK
Flt 69: Call Service
Flt 70: Call Service
Flt 71 to Flt 75 Device
Specific
Flt 76: through Flt 93
Accessory Fit
Flt 94 through Flt 127: Call Service
Flt 128: Poor Flame Sensor
Flt 10y: Valve Closure
Flt 10z: Other PreIgn. ILK
Flt 21a: Aux. Limit #1
Flt 21b: Aux. Limit #2
Flt 21c: LWCO
Flt 21d: High Limit
Flt 21e: Aux. Limit #3
Flt 21f: Fuel Select Off
Flt 21g: Both Fuels Selected
Flt 21h: High Oil Pressure
Flt 21i: Low Oil Pressure
Flt 21j: High Oil Temp.
Flt 21k: Low Oil Temp.
Flt 21m: Atomizing Sw.
Flt 21n: High Gas Pressure
Flt 21o: Low Gas Pressure
Flt 21p: Airflow Switch
Flt 21q: Aux. Interlock #4
Flt 21r: Aux. Interlock #5
Flt 21s: Other Interlocks
Flt 22a: Aux. Limit #1
Flt 22b: Aux. Limit #2
Flt 22c: LWCO
Flt 22d: High Limit
Flt 22e: Aux. Limit #3
Flt 22f: Fuel Select Off
Flt 22g: Both Fuels Selected
Flt 22h: High Oil Pressure
Flt 22i: Low Oil Pressure
Flt 22j: High Oil Temp.
Flt 22k: Low Oil Temp.
Flt 22m: Atomizing Sw.
Flt 22n: High Gas Pressure
Flt 22o: Low Gas Pressure
Flt 22p: Airflow Switch
Flt 22q: Aux. Interlock #4
Flt 22r: Aux. Interlock #5
Flt 22s: Other Interlocks
Flt 23a: Aux. Limit #1
Flt 23b: Aux. Limit #2
Flt 23c: LWCO
Flt 23d: High Limit
Flt 23e: Aux. Limit #3
Flt 23f: Fuel Select Off
Flt 23g: Both Fuels Selected
Flt 23h: High Oil Pressure
Flt 23i: Low Oil Pressure
Flt 23j: High Oil Temp.
Flt 23k: Low Oil Temp.
Flt 23m: Atomizing Sw
Flt 23n: High Gas Pressure
Flt 23o: Low Gas Pressure
Flt 23p: Airflow Switch
Flt 23q: Aux. Interlock #4
Flt 23r: Aux. Interlock #5
Flt 23s: Other Interlocks
Flt 29a: Aux. Limit #1
Flt 29b: Aux. Limit #2
Flt 29c: LWCO
Flt 29d: High Limit
Flt 29e: Aux. Limit #3
Flt 29f: Fuel Select Off
Flt 29g: Both Fuels Selected
Flt 29h: High Oil Pressure
Flt 29i: Low Oil Pressure
Flt 29j: High Oil Temp.
Flt 29k: Low Oil Temp.
Flt 29m: Atomizing Sw.
Flt 29n: High Gas Pressure
Flt 29o: Low Gas Pressure
Flt 29p: Airflow Switch
Flt 29q: Aux. Interlock #4
Flt 29r: Aux. Interlock #5
Flt 29s: Other Interlocks
Flt 30a: Aux. Limit #1
Flt 30b: Aux. Limit #2
Flt 30c: LWCO
Flt 30d: High Limit
Flt 30e: Aux. Limit #3
Flt 30f: Fuel Select Off
Flt 30g: Both Fuels Selected
Flt 30h: High Oil Pressure
Flt 30i: Low Oil Pressure
Flt 30j: High Oil Temp.
Flt 30k: Low Oil Temp.
Flt 30m: Atomizing Sw.
Flt 30n: High Gas Pressure
Flt 30o: Low Gas Pressure
Flt 30p: Airflow Switch
Flt 30q: Aux. Interlock #4
Flt 30r: Aux. Interlock #5
Flt 30s: Other Interlocks
Flt 32a: Aux. Limit #1
Flt 32b: Aux. Limit #2
Flt 32c: LWCO
Flt 32d: High Limit
Flt 32e: Aux. Limit #3
Flt 32f: Fuel Select Off
Flt 32g: Both Fuels Selctd
Flt 32h: High Oil Pressure
Flt 32i: Low Oil Pressure
Flt 32j: High Oil Temp.
Flt 32k: Low Oil Temp.
Flt 32m: Atomizing Sw.
Flt 32n: Hi Gas Pressure
Flt 32o: Low Gas Pressure
Flt 32p: Airflow Switch
Flt 32q: Aux. Interlock #4
Flt 32r: Aux. Interlock #5
Flt 32s: Other Interlocks
Flt 33y: Valve Closure
Flt 33z: Other PreIgn. ILK
The meaning of these codes may vary depending on the specific model of burner control. It is always best to consult the manufacturer’s documentation for the specific meaning of a fault code.
If you are having problems with your Honeywell burner control, it is important to troubleshoot the problem as soon as possible. A malfunctioning burner can pose a safety hazard and can also lead to inefficiency and higher energy bills.
Here are some troubleshooting tips for Honeywell burner control fault codes:
- Check the gas supply to make sure it is turned on and that the pressure is within the specified range.
- Check the wiring to the burner control for any loose or damaged connections.
- Inspect the burner components for any signs of wear or damage.
- Clear any obstructions that may be blocking the flame.
- Reset the burner control by turning it off and then back on.
If you have checked all of these things and the fault code is still present, it is best to call a qualified technician for assistance.