24
LT 90 Owners Manual
2015
If Furnace Is Not Heating:
1. Check fire.
2. Check pump. If pump is not running, shut off power supply to pump and inspect.
3. Check water level. If water is low, inspect for leaks in the system.
4. Check chimney for creosote build-up. If opening is reduced fire cannot burn properly.
5. Check Fan Draft and Draft Flapper. Make sure they are operating properly.
6. Check Fan Switch on E.T.C. to be sure it is ON. Fan Switch should only be off while filling or cleaning.
7. If water temperature is reading 120° F or lower, push Set Button on E.T.C. System to restart Heating Mode.
8. Furnace cannot produce enough energy for heat demand with wood being burned. Wood or system need
to be addressed.
If Furnace Boils:
1. Check fire door. Be sure door was not left open.
2. Check fire door rope. This is the fire resistant gasket around the Fuel Door. Make sure the door
has a tight seal.
3. Check air intake on fire door. Make sure cover closes tight.
4. In extremely warm weather, a smaller amount of wood should be used.
5. Check Auger Tube Plug for air leaks.
NOTE: If furnace boiled water out and air entered lines this could damage pump. Be sure to remove air
from system. (See Filling With Water) A hissing sound coming from the pump, in most
cases, means there is air in the system. Check water level to insure that your furnace is full.
NOTE: Combustion fan will not be turning when stack temp is above 260° F.
If none of these suggestions appear to solve your problem, contact your dealer.
Troubleshooting
