Lanair HI140 - Manual (Page 63)

SUPPLEMENTAL TROUBLESHOOTING
GUIDE CONTINUED
Symptom Possible Cause Corrective Action
2. Improper draft. 2. See B-9.
3.
Plugged heat exchanger, 3. See B-10.
manifold or chimney.
4.
Improper air setting, or 4. See flame adjustment
air settings. page 26.
5.
Plugged nozzle or 5. Clean nozzle and/or
preheater assembly. Preheater assembly.
E.
Burner 1. Thermostat set wrong or 1. See page 17, room
defective. thermostat installation.
2. Fan limit control set 2. See page 18, Section
improperly or defective. 12 & 12.3.
Chart #4
A. Preheater assembly
1. Cartridge heaters defective 1. Test cartridge heaters
not heating. or disconnected. using an ohms meter.
Air heater 112 Ω ±10%.
Oil heater 37 Ω ±10%.
2. Snap switch defective. 2. Test snap switch for
continuity if preheater is
cold.
Page 47