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SYMPTOM
Feed system fails to start.
Appliance fails to shut off.
Convection blower fails to start
Exhaust blower fails to start or
does not shut off.
Large, lazy flame, orange color.
Black ash on glass.
Nuisance shutdowns.
Appliance calls for heat.
Call light illuminates.
Exhaust blower starts.
No feed or igniter.
Hopper lid not closed all the
way
Table 24.1
24
POSSIBLE CAUSE
Out of fuel.
#2 snap disc may be defective.
Vacuum switch not closing. No vacuum.
Feed system jammed or blocked.
Feed spring not turning with feed motor.
Feed motor defective or not plugged in.
Call light on.
#1 snap disc defective.
Blower not plugged in.
Blower is defective.
Control box is defective.
Blower not plugged in.
Blower is clogged with ash.
Blower is defective.
Control box is defective.
Dirty appliance.
Poor fuel quality, high ash content.
Fire pot clean-out plate not completely closed.
Excessive amount of fuel.
Low flame.
Sawdust buildup in hopper.
Feed motor is reversing.
Defective thermocouple.
Defective control box.
Fire pot more than 1/2 full.
Thermocouple is defective or not properly
plugged in.
Defective control box
Switch or magnet is out of adjustment (auger will
not function)
Check hopper, fill with fuel.
Replace snap disc. Firebox door must be closed securely.
Check exhaust blower is plugged in and operating.
Check vacuum switch is plugged in. Check vacuum hose is in good
condition, clear and connected at both ends.
Check thermocouple is in good condition and plugged in properly.
Make sure venting system is clean.
NOTE: High winds blowing into the venting system can pressurize
the firebox causing loss of vacuum.
Empty hopper of fuel. Use a wet/dry vacuum cleaner to remove remaining
fuel, from hopper, including feed tube.
Check feed chute for obstructions.
Loosen 2 screws and jiggle feed assembly.
Check that set screw is tight on feed spring shaft at end of feed motor.
Check connections on feed motor, replace if defective.
Turn thermostat off.
If call light does not go out, disconnect thermostat wires from appliance. If
call light does go out, thermostat or wires are defective.
Replace snap disc.
Check that blower is plugged into wire harness.
Replace blower.
Replace control box.
Check that blower is plugged into wire harness.
Clean exhaust system.
Replace blower.
Replace control box
Clean appliance, including fire pot, heat exchangers and venting system.
Remove stainless steel baffle from firebox to clean ash from on top of
baffle. Clean behind rear brick panels. Change fuel brand to premium.
Check that fire pot clean-out plate is fully closed.
Reduce feed rate using feed rate adjustment control rod located inside
hopper.
Increase feed by opening feed rate adjustment control rod located
inside hopper.
page
Clean hopper, see
Check for good connections between feed motor and wire harness.
Replace thermocouple.
Replace control box.
page 22
for detailed instructions for High Ash Fuel Content
See
Management
Check connections on thermocouple or replace if defective.
A flashing yellow light on the control box indicates a problem with the
thermocouple.
Replace control box.
Close the lid. If that doesn't work, adjust or replace the switch or magnet
7019-802H
CORRECTIVE ACTION
20.
04/21
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