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Aircraft Maintenance TroubleShoot > Heater Troubleshooting (South Wind-except 8472 Series)

Both blowers run but heater fails to start 1. Breaker points defective or out of adjustment.
2. Defective spark plug.
3. Obstruction in combustion air passage.
4. Defective ignition coil.
5. Defective solid state ignition unit.
6. Open circuit in thermostat.
7. Defective solenoid coil or clogged nozzle.
8. Open circuit in duct limit switch.
9. Defective fuel pump.
10. Remote solenoid closed.
11. Open circuit in radio noise filter.
12. Airflow switch open. Recalibrate switch or correct cause of low combustion air flow.

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Disclaimer: sacskyranch.com contains abundant information relating to aircraft maintenance. The information provided is not intended to supercede or supplement the F.A.A. approved maintenance and/or operator’s manuals. Those F.A.A. approved manuals must be utilized when performing maintenance and/or operating aircraft.