Lanair MXB360 - Manual (Page 41)

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Section 19 - Trouble-Shooting
Symptom Possible Cause Corrective Action
C. Burner fires, and then 1. Contaminated fuel supply 1. Drain and clean fuel
fails on oil primary safety (water/anti freeze/gear lube) supply tank. Clean fuel
or dirty fuel filter. filter (see page 33)
2. Improper draft 2. Check draft see page 10.
Make sure chimney is properly
installed
3. Plugged heat exchanger, 3. Clean heater including manifold,
manifold, or chimney and chimney
4. Wrong air pressure 4. See flame adjustment pages
29-30
5. Wrong fuel pressure or 5. See flame adjustment
pressure fluctuating pages 29-30. See fuel piping
page 12
6. Improper combustion blower 6. See flame adjustment
setting, or blower is defective pages 29-30. See fuel piping
page 12
7. Oil primary/cad cell defective. 7. Test components/adjust
Cad cell improperly adjusted. cad cell/ clean turbulator
Dirty flame turbulator.
8. Plugged nozzle or pre-heater 8. Clean nozzle and /or pre-heater
assembly assembly
D. Pre-heater assembly 1. Cartridge heaters defective 1. Test cartridge heaters
not heating or disconnected using an ohm meter.
Air heater 112 Ω ±10%.
Oil heater 37 Ω ±10%.
2. Snap disc defective 2. Test snap switch for continuity if
pre-heater is cold
3. Hi-Limit snap disc defective 3. Replace snap disc assembly