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V. TROUBLE SHOOTING GUIDE
1. Trouble Shooting
Your KOZI pellet heater is equipped with a diagnostic light feature. When a problem
occurs, the heat setting bar graph will light up to indicate where the problem may be.
Each light has been numbered for easy identification. The chart below has been included
to help you determine which corrective action should be taken. A complete description of
each corrective action is included in the following pages of this manual. Some problems,
such as flame problems, will not cause the diagnostic lights to light up.
Problem Light Status Possible Causes Remedy
Check to see if heater is
plugged in.
Check electrical outlet for
power.
Exhaust vent and exhaust fan
are plugged
Clean exhaust venting and
exhaust fan.
Exhaust passage and exhaust
box pressure tap are plugged.
Clean exhaust passage and
pressure tap.
Pressure switch tube is cracked
or broken.
Replace pressure switch tube.
Pressure switch has failed. Replace pressure switch.
Exhaust fan has failed. Replace exhaust fan.
Hopper is empty. Fill hopper with fuel.
Exhaust fan thermal disk has
failed.
Replace exhaust fan thermal
disk.
Auger jam.
Empty hopper and clean out
auger.
Auger motor has failed. Replace auger motor.
Manual reset thermal disk has
tripped.
Reset the manual reset thermal
disk.
Manual reset thermal disk has
failed.
Replace the manual reset
thermal disk.
Exhaust fan thermal disk has
failed.
Replace exhaust fan thermal
disk.
Stove in "Cool Down" mode.
Allow sufficient time for the
stove to cool down.
MX
Control board has failed. Replace
MX
Control Board.
No pellet fuel. Add fuel to the hopper.
Burn pot dirty. Clean burn pot.
Fuse blown. Replace fuse.
Igniter slipped out of igniter tube. Push igniter back into place.
Igniter has failed. Replace igniter.
No power to igniter.
Replace
MX
Control Board.
Burn pot dirty. Clean burn pot.
Poor quality fuel. Change fuel supplier.
Not enough air. Adjust air damper.
Too much air. Adjust air damper.
Poor quality fuel. Change fuel supplier.
Heat exchanger requires
cleaning.
Clean heat exchanger.
Not enough air. Adjust air damper.
Poor quality fuel. Change fuel supplier.
Smell of smoke in room.
Normal
The pellet venting joints not
sealed properly.
Seal all joints with high
temperature RTV silicone
sealant.
#2 light blinks
(Pressure
system failure)
#3 light blinks
(Proof of flame
failure)
MX
Control Trouble Shooting Guide
All lights off No power.
Heater will not feed
pellets.
# 4 light blinks
(Overheat safety
device failure)
Normal
Normal
Too large and dark
orange flame.
Normal
Normal
Normal
Adjusting damper has
no effect. Fuel piles up.
Stove won't turn off.
Stove will not light.
Short flame on high
feed.
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