23
Do Not Burn Wet Coal!
Super-Magnum Coal Stoker Stove
3-90-02702R8_11/13
Symptom
Possible
Cause
Corrective
Action
With Proper installation, operation, and maintenance, your appliance will provide years of trouble-free service. If you do
experience a problem, this troubleshooting guide will assist a qualified person in the diagnosis of a problem and the corrective
action to be taken. This troubleshooting guide is intended for use by qualified service technicians only.
Plug in appliance - No
response.
No current to outlet.
Defective power cord / connection.
Defective fuse on circuit board.
Circuit board defective.
Check circuit breaker at service panel.
Re-connect or replace power cord.
Replace 6 amp fuse on board.
Replace circuit board.
Fire out, no fuel on grates.
Out of fuel.
Wet coal bridged in hopper.
Foreign object obstruction - Hopper.
Foreign object obstruction - Feeder.
Feed system malfunction.
Check hopper. Fill with fuel.
Do not load wet coal in hopper.
Empty the hopper, searching for object.
With hopper empty examine feed throat.
Verify operation of motor, pusher arm, and
pusher block.
Fire out, grates full of fuel.
Combustion blower restrictor closed.
Combustion blower positioning.
Ash build-up under grates.
Failed starting process.
ESP failure - temp on DDM reads abnor-
mally high when stove is cold.
Re-set restrictor using draft meter.
Be sure that the blower is in its mount.
Remove grates and clean air chamber.
Follow start up procedure.
Replace ESP.
Unburned or partially burned
coal in ash pan.
Black rocks in coal.
Feed rate too high.
Try different coal.
Set feed adjuster to lower setting.
Coal pushing out the sides of
the grate frame.
Clinkers in ashes restricting flow of fuel
over the burn grates.
Re-set restrictor using draft meter. Too much
air flow will cause the ashes to fuse together.
Wet coal will not flow properly.
Excessive fines in fines tray.
Dirty coal supply.
Feed restriction causing grinding.
Fines scraper adjustment.
Try different coal.
Remove coal from hopper and check for a
foreign object or large piece of coal.
Re-adjust scraper (See Page 29).
Turned to "OFF" won't shut
down.
Not enough time allowed.
Dirty or failed ESP.
Mode selector not truly in the "OFF"
position.
Shut-down sequence: Minimum feed until
ESP cools. Combustion blower should be off
unless fire is at maximum temp.
Remove and clean probe.
Attach DDM to monitor temperature and
shut-down parameters.
The status light will turn off when the knob
is in the "OFF" position. (unless there is a 3
blink error code.)
Distribution Blower not operat-
ing.
Room Temperature demand met.
Insuccessful ignition.
Upon meeting the room temperature set-
point, the blower will stop.
Also, the distribution blower will not run until
the ESP senses a high enough temperature
to ensure that the discharged air is warm.
9
Troubleshooting
Contact your dealer
for additional information regarding operation and trouble-shooting. Visit www.harmanstoves.com to
find a dealer.
