Harman P68 Installation & Operating Manual

27
P68 Pellet Stove
FEEDER DOES NOT FEED
1. No pellets in hopper.
2. Firebox draft may be too low for low draft pres-
sure 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
lightingthere.
4.Something is restricting ow inthe hopper or
causing the slide plate to stick.
5. Feed motor has failed.
PARTIALLY BURNED PELLETS
1. Feed rate too high.
2. 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
indication is caused by poor or incomplete combus-
tion. 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 combustion is a contributer of creosote
whichmaycauseachimneyre)
A 6 blink status may be caused by several
things:
1.Blockedorpartiallyblockedue.
2. 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lled
withnesandsmallbitsofash.
4.Theholesintheburnpotmaybegettinglled
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.
2. Draft setting is too low.
3.Somethingisrestrictingfuelow.
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
2. Draft too low because of gasket leak.
3. Poor quality or damp pellets
4. Combination of 1 and 2.
P68 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
reburningusingthespecialtoolprovidedwithyour
stove.Scrapetheoor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
needed 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-red.
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 P68 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
content 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 ef-
fective when burned in the P68.
The moisture content must not exceed 8%.
Higher moisture will rob BTU's and may not burn
properly.

Harman P68 Specifications

General

Brand	Harman
Model	P68
Category	Pellet stove
Language	English