FC2500 Furnace Installation and Operation Manual
11 Troubleshooting PROBLEM Heating inefficient during the first combustions. Lack of draft.
CAUSES
SOLUTIONS
If installed, improper adjustment of the barometric damper (opened too wide). Chimney flue restriction (too long. 90 o elbows). Improper installation of the ducts, low static pressure, unbalanced system (too many warm air outlets and not enough fresh air return). The thermostat always calls for heat or is too close to a source of cold air. Air controls not properly adjusted. House not insulated enough. Furnace and ash drawer door not airtight. Furnace too small for the surface to be heated. Unbalanced ventilation system. Wet wood, lack of draft. Barometric damper not properly adjusted. Restriction in the furnace or chimney. No static pressure. Unbalanced ventilation system. Wet wood or low grade wood.
Adjust the damper, minimize the smoke pipe length and use of 45 o elbows.
Furnace burns well, warm air plenum is very hot but there is not much heat coming out in the room.
Rearrange the ducting to respect the minimum static pressure of 0.20 in. W.C. (50 Pa) in the plenum. Relocate the thermostat. Rebalance the ventilation system to increase the air flow in the room where the thermostat is located. Check tightness of air controls, furnace and ash drawer door. Use dry wood. Adjust the barometric damper. Clean the chimney, flue pipe and the furnace exchangers. Use dry wood. Rearrange the ventilation system correctly. Leave the door closed, do not add more wood and wait for the end of combustion. Check the door and the ash drawer door for leaks. Excessive chimney draft. Check the tightness of the air controls. Make sure the furnace is plugged-in a functional power outlet. Test and replace if necessary, control switch, thermostat, and air control motor.
Furnace consumes a lot of wood.
A lot of creosote, moderate heat output.
Furnace heats a lot but the warm air duct does not get hot.
Reload button LED blinking fast
Unit is overheating
Primary air controls never opens.
Furnace is not plugged-in.or an electrical component is faulty.
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