Harman Stove Company P43 - Manual (Page 26)

6 P43 Pellet Stove
Feeder dOeS nOt Feed
1. No pellets in hopper.
. Firebox draft may be too low for low draft pressure
switch in feeder circuit to operate. check for closed
doors, loose or missing gasket on doors or hopper
lid, or a faulty pressure switch.
3. Feed motor will not run until the ESP control senses
165 deg. F. Maybe you did not put
enough pellets in the burn pot before manually light-
ing the fire.
4. Something is restricting flow in the hopper or caus-
ing the slide plate to stick.
5. Feed motor has failed.
PartiallY burned PelletS
1. Feed rate too high.
. Draft too low. (Check burn pot clean-out slide and
door gasket).
3. Burn pot or heat exchanger tubes may need to
be cleaned.
4. Combination of all the above.
5. #6 status blink: A 6 blink control board status indi-
cation is caused by poor or incomplete combustion.
The Automatic Ignition circuit board has the ability to
track the combustion through feed settings and ESP
temperatures. When the control board has calculated
poor or incomplete combustion, it will shut down the
unit as a safety feature. (Poor or incomplete combus-
tion is a contributer of creosote which may cause a
chimney fire)
A 6 blink status may be caused by several things:
1. Blocked or partially blocked flue.
. Blocked or partially blocked inlet air.
a. Backdraft damper on the inlet pipe may be
stuck closed.
b. If outside air is installed, the inlet cover may
be blocked.
3. The air chamber under the burnpot may be filled
with fines and small bits of ash.
4. The holes in the burnpot may be getting filled with
ash or carbon buildup.
5. Combustion blower fan blades may need
cleaned.
6. There is no fuel in the hopper.
SMOKe SMell
Seal the vent pipe joints and connection to stove
with silicone.
Fire haS gOne Out
1. No pellets in hopper.
. Draft setting is too low.
3. Something is restricting fuel flow.
4. Feed motor or combustion blower has failed.
5. Power failure or blown fuse.
SMOKe iS viSible cOMing Out OF vent
1. Air-fuel ratio is too rich.
A. Feed rate too high.
B. Draft too low caused by a gasket leak.
lOw heat OutPut
1. Feed rate too low
. Draft too low because of gasket leak.
3. Poor quality or damp pellets
4. Combination of 1 and .
P43 trouble-Shooting
cleaning burn Pot
Whenever your stove is not burning, take the
opportunity to scrape the burn pot to remove carbon
buildup. A vacuum cleaner is handy to remove the
residue. be sure the stove is cold if you use a
vacuum.
Carbon buildup can be scraped loose with the
fire burning using the special tool provided with your
stove. Scrape the floor and sides of the burn pot.
The carbon will be pushed out by the incoming fuel.
Always wear gloves to do this.
removing ashes
Turn the Temp Dial to number 1 approximately
30 minutes before removing ashes. This will result
in a cooler stove and ash pan.
Maximum Feed Adjuster settings are not need-
ed in most cases. Operating in the normal range
(#4) is recommended when maximum heat output
is not required. The ESP probe prevents the stove
from being over-fired.
Keep the stove free of dust and dirt.
helpful hints
Fuel
Pellet fuels are put into 3 categories in terms of
ash content. Premium at 1% or less, Standard at 3%
or less and all others at 3% or more.
The P43 is capable of burning all 3 categories
of pellets due to a patented feeder and burn pot
system.
It should be noted, however, that higher ash con-
tent will require more frequent ash removal, scraping
of the burn pot, and may provide less BTU's per
pound. Normally, standard and high ash pellets cost
less than premium pellets and can be cost effective
when burned in the P43.
The moisture content must not exceed 8%.
Higher moisture will rob BTU's and may not burn
properly.